Answer: The answers to the questions by 10 of the friends
Step-by-step explanation:
The options to the question are:
a. The answers to the questions by the parents of 10 of the friends.
b. The results of a national poll of 1800 students in the same age group as the child.
c. The answers to the questions by 10 of the friends.
d. The answers to the questions by 10 people from the parents office.
From the question, we are informed that a concerned parent wants to determine the amount of time spent on the phone by her child's friends. The sample that is likely to bias the results of the study by reporting less than the actual time is the answers to the questions by 10 of the friends.
This is because since the questions are being asked from her friends, there'll be bias as the friends won't want to give the exact time used on phone, hence, they'll hold back some information.
Which absolute value function opens down?
1)y = 2|x- 5|
2)y = [X + 1|-7
3)y = -|X+ 4 |+ 8
4)y = 1/4|X-9|
Answer:
3) y = - | x + 4| + 8Step-by-step explanation:
The general form of an absolute value function is
f(x)=a|x-h|+kIt opens up if a> o and opens down if a < 0
From the given functions:
y = - | x + 4| + 8, opens downsee attached for reference
I need help plz help me
Answer:
The answer would be 20.
Step-by-step explanation: The area is 4 x 5 which equals 20.
Please answer fast will make you brainlest
Answer:
the correct answer would be left 7
Step-by-step explanation:
because in this case |x-7| -7= left 7 and +7 is right 7 also it is within the function
I hope this helps
mark brainliest if you can
Answer: B.
7 units to the left.
An identification code is to consist of 4 letters followed by 2 digits. Determine the following
a) How many different codes are possible if repetition of letters is permitted, repetition of numbers is not permitted, and the first three entries must all be the same letter
b) How many different codes are possible if the first letter must be an A, B, C, or D and repetition is not permitted?
explanation
Counting Possibilities with Repetition or No Repetition:
Counting the number of possibilities in a given situation can vary quite a bit depending on whether repetition is allowed or not. For example, if trying to find how many 6 letter passwords can be made with 10 letter choices, if the letters are allowed to be repeated then there are 10 choices for each letter in the password - resulting in... 10 x 10 x 10 x 10 x 10 x 10 = 10^6 =1,000,000 possible passwords.
However, if repetition of letters is not allowed, then there are 10 choices for the first letter, but only 9 for the second, 8 for the third, and so on. This results in only 10 x 9 x 8 x 7 x 6 x 5 = 151,200
Answer :
There are 26 letters to choose from and 10 digits (0 through 9).
(a) If the first three entries must all be the same letter, then there are 26 choices for the first entry, but only one choice for the second and third entries. The fourth entry can then be any letter, so there are 26 possible choices for the fourth entry. The fifth and sixth entry must be digits, but repetition of numbers are not permitted. So the fifth entry has 10 choices and the sixth entry only has 9 choices. This is a total of 26 x 1 x 1 x 26 x 10 x 9= 60,840
b) If the first letter must be one of A, B, C, or D, then there are 4 choices for the first entry. No repetition is allowed, so the second entry must be chosen out of the 25 remaining letters, and similarly the third and fourth entry will have 24 and 23 choices each. The fifth and sixth entry must be digits, but repetition of numbers are not permitted. So the fifth entry has 10 choices and the sixth entry only has 9 choices. 4 x 25 x 24 x 23 x 10 x 9=4,968,000 different codes
hope this helped alittle ..
Solve each equation and match them with the correct solution. Column A 1. \large -3x=42 : \large -3x=42 2. \large \frac{x}{-6}=-9 : \large \frac{x}{-6}=-9 3. \large 5x=-105 : \large 5x=-105 4. \large x+37=-25 : \large x+37=-25 5. \large x-42=-15 : \large x-42=-15 6. \large x-\left(-12\right)=-4 : \large x-\left(-12\right)=-4 7. \large x-\left(-6\right)=5 : \large x-\left(-6\right)=5 8. \large 8-x=-12 : \large 8-x=-12 9. \large -9-x=-6 : \large -9-x=-6 10. \large -6+x=17 : \large -6+x=17 11. \large \frac{x}{9}=-42 : \large \frac{x}{9}=-42 12. \large -16=x-8 : \large -16=x-8 13. \large -25=x+17 : \large -25=x+17 14. \large 36=8-x : \large 36=8-x 15. \large -x+6=11 : \large -x+6=11 16. \large -x+8=4 : \large -x+8=4 17. \large 16=4-x : \large 16=4-x 18. \large 85=-5x : \large 85=-5x 19. \large 21=-\frac{x}{7} : \large 21=-\frac{x}{7} Column B a.x=23 b.x=-378 c.x=20 d.x=-62 e.x=4 f.-16 g.x=-28 h.x=-42 i.x=-147 j.x=54 k.x=27 l.x=-17 m.x=-5 n.x=-21 o.x=-12 p.x=-14 q.x=-8 r.x=-1 s.x=-3
Answer:
The answer is below
Step-by-step explanation:
1) -3x = 42
Divide both sides by -3
-3x/ -3 = 42 / -3
x = -14
Answer: p.x=-14
2)
[tex]\frac{x}{-6}=-9\\ \\Multiply\ both\ sides\ by\ -6\\\\\frac{x}{-6}*-6=-9*-6\\\\x=54[/tex]
Answer: j. x=54
3) 5x = 105
Divide both sides by 5
5x/ 5 = 105 / 5
x = 21
Answer: n. x=-21
4) x+37=-25
add -37 to both sides
x+37 - 37 =-25 - 37
x = -62
Answer: d. x=-62
5) x-42=-15
add 42 to both sides
x-42 + 42 =-15 + 42
x = 27
Answer: k. x=27
6)x - (-12) = -4
x + 12 = -4
add -12 to both sides:
x + 12 - 12 = -4 - 12
x = -16
Answer: f. x = -16
7) x - (-6) = 5
x + 6 = 5
add -6 to both sides:
x + 6 - 6 = 5 - 6
x = -1
Answer: r. x = -1
8)8-x = -12
8 - x + x + 12 = -12 + x = 12
x = 8 + 12
x = 20
Answer: c) x = 20
9) -9 - x = -6
x = -9 + 6
x = -3
Answer: s. x =-3
10) -6 + x = 17
x = 17 + 6
x = 23
Answer: a. x =23
11)
[tex]\frac{x}{9} =-42\\multiply\ by \ 9\\\\x = 9*-42=-378[/tex]
Answer: b. x = -378
12) -16 = x - 8
x = -16 + 8
x = -8
Answer: q. x = -8
13) -25 = x + 17
x = -25 - 17
x = -42
Answer: h. x = -42
14) 36 = 8 - x
x = 8 - 36
x = -28
Answer: g. x = -28
15) -x + 6 = 11
x = 6 - 11
x = -5
Answer: m. x = -5
16) -x + 8 = 4
x= 8 - 4
x = 4
Answer: e. x =4
17) 16 = 4 -x
x = 4 - 16
x = -12
Answer: o: x = -12
18) 85 = -5x
x = 85/ -5
x = -17
Answer: l. x= -17
19) 21 = -x/7
x = 21 * -7
x = -147
Answer: i. x = -147
What would be the grade and slope of a totally flat road?
Answer:idk
Step-by-step explanation:idk
Answer:
Zero
Step-by-step explanation:
The grade percentage level would be zero therefore the slope is zero.
.07 is ten times as much as what?
Answer:
.07 is ten times as much as 0.007
Step-by-step explanation:
If you divide .07 by 10 the answer would be 0.007 <3
Show that if x is any real number, there is a sequence of rational numbers converging to x.
Answer:
It has been proven from the explanation.
Step-by-step explanation:
If we assume that the real number x is greater than 0. Now, If on the contrary, a is less than 0, we can make the argument that;
Let us make n to be a natural number and m = m(n) to be the largest positive integer in such a way that;
m/n < x
Thus, (m+1)/n ≥ x and finally;
|x - m/n| < 1/n
If r_n = m/n. It will be easy to show from the definition of limits that the sequence (r_n) has limit x.
From earlier where we assumed that x > 0, the numbers that will be obtained by truncating the decimal expansion of "x" at the n-th place will be rational, and clearly have the limit "x". Although it implies we are now assuming every real number will have a decimal expansion.
Which best explains how to subtract one integer from another?
Answer:
Option (3)
Step-by-step explanation:
Integers are the numbers which don't have a fractional part (having positive of negative notations)
Example; -2, -1, 0, 1, 2,...
Let the two integers are 0 and 2,
Subtraction of these integers will be = 0 - 2
= 0 + (-2)
Here opposite of 2 has been added to 0.
That means subtraction of two integers is to add the opposite of the integer being subtracted.
Option (3) will be the answer.
Delilah does 184 jumping jacks in four minutes she does her jumping jacks at a constant rate how many jumping jacks Can Delilah do per minute
Answer:
Delilah can do 46 jumping jacks per minute.
Step-by-step explanation:
Which is more -1.5 or -3/2
Answer:
there are the same
Step-by-step explanation:
-3/2 equals -1.5
so -1.5 equals -3/2
2a/b given a=-3/4 and b=1/2
Answer:
-3
Step-by-step explanation:
2·(-3/4)/(1/2)(-6/4) · (2/1)-12/4-3A circular spinner is divided into sectors of equal area: red sectors, blue, yellow, and green. Consider the experiment of spinning the spinner once. Find the probability that the spinner lands on blue.
Answer:
1/4
Step-by-step explanation:
There are 4 different sectors and each sector has 1 chance.
Help me please Write 3.79 as a mixed number.
Answer:
3 79/100
Step-by-step explanation:
Answer:
379/100
Step-by-step explanation:
what is
2/3 of 1/4 of x = 1360
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 8160}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{ \frac{2}{3} \times \frac{1}{4} \times x = 1360}[/tex]
To multiply one fraction by another, multiply the numerators for the numerator and multiply the denominators for its denominator and reduce the fraction obtained after multiplication into lowest term
[tex] \longrightarrow{ \sf{ \frac{2 \times 1}{3 \times 4} \times x = 1360}}[/tex]
[tex] \longrightarrow{ \sf{ \frac{2}{12} \times x = 1360}}[/tex]
[tex] \longrightarrow{ \sf{ \frac{1}{6} x = 1360}}[/tex]
Solve for x
[tex] \longrightarrow{ \sf{x = 1360 \times 6}}[/tex]
[tex] \longrightarrow{ \sf{x = 8160}}[/tex]
Hope I helped!
Best regards! :D
How many pounds are there in 2 and 1/4 tons? (1 ton = 2000 pounds)
2025
4000
4500
4525
Answer:
4,500
Step-by-step explanation:
Convert 2 1/4 to a decimal
2.25
2,000 x 2.25
= 2.25
Good luck, hope this helped!
At the start of a race, a runner’s velocity changes from 0 to 4,0 m/s. It takes him 2 seconds to speed up. His
acceleration is ___ m/s2.
Please answer with a explanation if you can.
Answer:
2 m/s²
Step-by-step explanation:
Given:
v₀ = 0 m/s
v = 4.0 m/s
t = 2 s
Find: a
a = (v − v₀) / t
a = (4.0 m/s − 0 m/s) / 2 s
a = 2 m/s²
Answer:
At the start of a race, a runner’s velocity changes from 0 to 4.0 m/s. It takes him 2 seconds to speed up. His acceleration is 2 m/s2.
Explanation:
Acceleration is the rate at which velocity changes. To find the acceleration, divide the change in velocity (final velocity − initial velocity) by the time interval. In this example, the change in velocity is 4.0 m/s in 2 seconds. So, divide 4.0 by 2.
I hope this explanation helps you understand accelerations!
All three sides of a triangle are initially 4 m in length. One of the triangle's sides is oriented horizontally. The triangle is scaled down in size without changing any of the angles. What is the new height of the triangle when the area is exactly half of the original triangle's area
Answer:
the new height of the triangle = 2.449
Step-by-step explanation:
Given that:
the sides of the triangle are 4m in length i.e they are equal. It shows that the triangle is known to be an equilateral triangle.
Let say the triangle is a triangle IJK
Let the length of the side to be i = 4
Definitely
IJ = JK = IK = i = 4
If a midline is drawn and cuts the equilateral triangle in two equal halves of a right-angle triangle. Then, suppose the midline is L
Then ;
[tex]JL = \dfrac{1}{2} JK[/tex]
[tex]JL = \dfrac{1}{2} i[/tex]
Let consider triangle IJL
(IL)² = (IJ)² - (JL)²
[tex](IL)^2 = i^2 - \dfrac{i^2}{4}[/tex]
[tex](IL)^2 = \dfrac{3i^2}{4}[/tex]
[tex](IL) =\sqrt{ \dfrac{3i^2}{4}}[/tex]
[tex]IL =\sqrt{3} \dfrac{i}{2}[/tex]
Area of triangle IJK can be expressed as:
[tex]Area = \dfrac{1}{2}\times Base \times Height[/tex]
[tex]Area = \dfrac{1}{2}\times i \times \sqrt{3}\dfrac{i}{2}[/tex]
[tex]Area = \sqrt{3}\dfrac{i^2}{4}[/tex]
where, i = 4
Then:
[tex]Area = \sqrt{3}\dfrac{4^2}{4}[/tex]
[tex]Area = \sqrt{3} \dfrac{16}{4}[/tex]
[tex]Area =4 \sqrt{3}[/tex]
when the area is exactly half of the original triangle's area, the new height is :
[tex]A = \dfrac{1}{2} \times Area[/tex]
[tex]\sqrt{3} \dfrac{i^2}{4} = \dfrac{1}{2} \times 4\sqrt{3}[/tex]
[tex]\dfrac{i^2}{4} = \dfrac{1}{2} \times 4[/tex]
[tex]\dfrac{i^2}{4} =2[/tex]
[tex]i^2 = 8[/tex]
[tex]i= \sqrt{8}[/tex]
[tex]i= \sqrt{4 \times 2}[/tex]
[tex]i= 2 \sqrt{2}[/tex]
Finally, the new height of the new triangle is:
[tex]IL =\sqrt{3} \dfrac{i}{2}[/tex]
[tex]IL =\sqrt{3} \dfrac{2 \sqrt{2}}{2}[/tex]
[tex]IL =\sqrt{3 \times 2}[/tex]
[tex]IL =\sqrt{6}[/tex]
IL = 2.449 m
PLEASE HELP Complete the table below to find solutions to the linear equation y=5x+35.
When answering the third column (x,y), use parentheses and a comma but do not include a space between numbers.
Answer:
x | y | (x,y)
0 | 35 | (0,35)
3 | 50 | (3,50)
-7 | 0 | (-7,0)
Step-by-step explanation:
Given the equation: [tex] y = 5x + 35 [/tex], to complete the table, plug in the value of x given in the table in each row, to find y.
When x = 0,
[tex] y = 5(0) + 35 [/tex]
[tex] y = 0 + 35 [/tex]
[tex] y = 35 [/tex]
(0,35)
When x = 3,
[tex] y = 5(3) + 35 [/tex]
[tex] y = 15 + 35 [/tex]
[tex] y = 50 [/tex]
(3,50)
When x = -7,
[tex] y = 5(-7) + 35 [/tex]
[tex] y = -35 + 35 [/tex]
[tex] y = 0 [/tex]
(-7,0)
Order the intger from smallest to largest 10, 9, -5, -2, -6
Answer:
-6, -5, -2, 9, 10
Step-by-step explanation:
Answer:
-6,-5,-2,9,11
help please very important
2 4/7 divided by 1 3/6=
Answer:
1.714
u can round it lol i just put it in a calculator
Answer: 1 and 5/7
Step-by-step explanation: To divide mixed numbers,
first write the mixed numbers as improper fractions.
So here, we can write 2 and 4/7 as the improper fraction 18/7
and we can write 1 and 3/6 as the improper fraction 9/6.
If you need a review of how to write a mixed number
as i improper fraction, let me know below and I will help.
So here, we have 18/7 ÷ 9/6.
Remember that dividing by a fraction is the same
as multiplying by the reciprocal of that fraction.
So here, 18/7 ÷ 9/6 is the same as 18/7 × 6/9.
So now we're simply multiplying fractions.
Remember that when we're multiplying fractions,
we want to cross-cancel first whenever possible.
So here, notice that we can cross-cancel 9 and 18 to 2 and 1.
However, we can't cross-cancel 7 and 6.
So we simply multiply across the numerators
and then across the denominators and we have 12/7.
We can write 12/7 as the mixed number 1 and 5/7.
Can y’all help me write this down?
Answer:
below
Step-by-step explanation:
[tex]\frac{(-3)}{7}[/tex] and [tex]-(\frac{3}{7} )[/tex] [tex]\frac{-5}{9}[/tex] and [tex]-(\frac{5}{9})[/tex]1. h(2) + g(2) *
h(t) = 3-5
g(t) = 2t - 5
Answer:
h(2)+g(2) = -3
Step-by-step explanation:
[tex]h(2) +g(2)\\ \\h(t) = 3-5, g(t) = 2t -5[/tex]
Replace the variable (t) with (
2) in the expression.
h (2) = 3 - 5
Replace the variable (t) with (
2) in the expression.
g(2) = 2(2) -5
Replace the function designators in h(2) +g(2) with the actual functions.
h(t) = 3 - 5 +2 (2) ← plug h(2) into 2(t)
Remove parentheses.
3 - 5 + 2(2)
Multiply 2 by 2
3 - 5 + 4 - 5
Subtract 5 from 3
.
-2 + 4 - 5
Add -2 and 4
2 - 5
Subtract 5 from 2
-3
Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 6 of which have electrical defects and 19 of which have mechanical defects. a. How many ways are there to randomly select 5 of these key boards for a thorough inspection
Answer:
Number of ways selection 5 key = 53,130
Step-by-step explanation:
Given:
Number of failed keyboard = 25
Number of electrical defects = 5
Number of mechanical defects = 19
Find:
Number of ways selection 5 key
Computation:
nCr
₂₅C₅
⇒ 25! / [5!(25! - 5!)]
⇒ 25! / [5!(20!)]
⇒ 53,130
Number of ways selection 5 key = 53,130
Again, the size of a television is based on the length of its diagonal in inches.
What would be the size of the TV shown below
26”by 45”
Answer:
52 in screen
Step-by-step explanation:
26²+45²=c²
676+2025=c²
√2701=c²
51.97=c
2 is a solution for
True or False
Answer:
False
Step-by-step explanation:
The open circle means you should not include the number it is on.
The inequality would look like, x<2 and not equal to. Therefore, 2 is not a solution.
Answer:
False
Step-by-step explanation:
When there is an open circle, it means that it can't be that exact number. If there is a closed circle, it can be that number. This is an open circle, and means that it is less than 2.
Ashley can ride her bicycle 15 miles
If your question is: Ashley can ride her bicycle 15 miles in 2 hours. There are 60 miniutes in an hour and there are 1760 yards in 1 mile. How many yards does Ashley travel each minute?
____________________________________
First, do 15 miles divided by 2 hours. In addition, do 1 hour divided by 60 minutes (1). Thus, do 1760 yards divided by 1 mile. Therefore, you can multiply these together to get 220 yards/min.
Best of luck!
(6 + 4)^2 + (11+ 10/2) Simplifyyyyy
Answer:
116
Step-by-step explanation:
we do pemdas so start with parenthesis
6+4=10
10 squared =100
then we divide before adding so
10/2 = 5+11= 16
100+16= 116
A rectangle is 18 inches long and 9 inches wide. Find it’s area.
Answer:
162 square inch
Step-by-step explanation:
Area = Length * Width
Area = [tex]18*9=162[/tex]
The area of the rectangle will be 162 square inches.
What is the area of the rectangle?The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.
A rectangle is a quadrilateral having four sides and the sum of the angles is 180 in the rectangle the opposite two sides are equal and parallel and the two sides are at 90-degree angles.
Given that a rectangle is 18 inches long and 9 inches wide.
Area = Length x width
Area = 18 x 9
Area = 162 square inches
Therefore, the area of the rectangle will be 162 square inches.
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