Answer:
The amount of candy you had before is 8.
Step-by-step explanation:
75% + 25% makes 100% percent.
If we take 25% off from 8, you get 6.
A quick way to do this is: 8(.25)
If you solve that, you get 2. 8 - 2 is 6, which is what you originally had.
Examine the quadratic equation LaTeX: 9x^2+12x+4=0
A: What is the discriminant of the quadratic equation?
B: Based on the discriminant, how many roots does the equation have?
C: State whether the root(s) are real or complex.
Be sure to answer all parts!
Jasmine really wants to make an A in her college math class. The class has 6 exam grades that make up the final grade. So far, she has made an 83, 94, 96, 85, and a 81. Is it possible for her to make an A in the class if the cut off for an is 90 and the highest possible grade on a test is 100?
10% of electric light bulbs are defective at manufacturer. A random sample of 8 light bulbs are chosen and tested. Find the probability that at least 3 are defective.
Answer:
0.0381
Step-by-step explanation:
This is a binomial probability distribution problem. Thus;
p = 10% = 0.1
We are told that A random sample of 8 light bulbs are chosen and tested. Thus, n = 8
We want to find the probability that at least 3 are defective. This will be;
P(X ≥ 3) = P(3) + P(4) + P(5) + P(6) + P(7) + P(8)
P(X = x) = C(n, x) × p^(x) × (1 - p)^(n - x)
Thus;
P(3) = C(8, 3) × 0.1³ × (1 - 0.1)^(8 - 3)
P(3) = C(8, 3) × 0.1³ × 0.9^(5)
P(3) = 0.03306744
Repeating this same procedure, we have;
P(4) = 0.0045927
P(5) = 0.00040824
P(6) = 0.00002268
P(7) = 0.00000072
P(8) = 0.00000001
Thus;
P(X ≥ 3) = 0.03306744 + 0.0045927 + 0.00040824 + 0.00002268 + 0.00000072 + 0.00000001 = 0.03809179
Approximately 0.0381
If ABC is a right triangle with B the right angle, A=(-3,2) and B =(2,5), find possible
coordinates for C
Answer:
b
Step-by-step explanation:
PLEASE HELP ASAP! Will Mark BRAINLEST
1) 7a: 7 times a number
2) 2a+3: 3 more than twice a number
3) 30d, 30 minutes times the number of days she practices.
the number 47 is composed of
Answer:
it's composed of the digits 4 and 7
—4 + 5 — 7 = 10 + 3х – 2х
Answer:
X= -4.66666667 or 5 when rounded to the nearest whole number.
Step-by-step explanation:
-4+5-7=10+3x-2
-11+5=8+3x
-6=8+3x
-6-8=8-8+3x
-14=3x
X= -4.66666667 or 5 when rounded to the nearest whole number.
b) Work out the Highest Common Factor of 600 and 1050
be here to search
TELE
Answer:
the greatest common factor is 150
Which equation is equivalent to 5x = In 8?
Answer:
5x= in 8
Step-by-step explanation:
There is no other equation so i hope this is right
NEED ASAP!!!
If you were to construct a triangle using the given information, classify what type of triangle it would create.
3 cm, 5 cm, 4 cm
90°, 45°, 18 in
A) Right Triangle
B) Isosceles Triangle
C) Equilateral Triangle
D) Obtuse Triangle
Answer:
righ angle tringle
Step-by-step explanation:
because 90 degree angle is only in right angle tringle,we can not creat this angle in other tringle
jayson subtracted 38 from the product of 325 and 24 what is the difference
Answer:
263?
Step-by-step explanation:
Answer:
7762
Step-by-step explanation:
product of 325 and 24 is 7800 so 7800-28=7762
Please help me, I will give 29 points!
Answer:
−0.8x+4.8y+16
Step-by-step explanation:
4(0.5x+2.5y−0.7x−1.3y+4)
=(4)(0.5x+2.5y+−0.7x+−1.3y+4)
=(4)(0.5x)+(4)(2.5y)+(4)(−0.7x)+(4)(−1.3y)+(4)(4)
=2x+10y−2.8x−5.2y+16
=−0.8x+4.8y+16
25x^2 + 81
factorize completely pls help I'm in a hurry
Answer:
9/5 or 1.8
Step-by-step explanation:
25x(sqd)+81
x(sqd)=81/25
x=sq rt (81/25) = 9/5 =
plz answer my question
Answer:
65
Step-by-step explanation:
15*3+15=60
30*2+15=75
20*4+15=85
10*5+15=65
The chemistry teacher decides to use chalk paint to cover a circular portion of a wall in the science lab. If the greatest distance
across the circle is is 3 feet, approximately how many square feet will the chalk paint cover?
Answer: 7ft
Step-by-step explanation:
i just did it
The maximum area covered will be 9 ft².
What is the area of circle?The region that a circle occupies in a two-dimensional space is known as the area of the circle.
The area of circle is -
A = πr²
Given:
The chemistry teacher decides to use chalk paint to cover a circular portion of a wall in the science lab.
If the greatest distance across the circle is is 3 feet.
We can write the maximum area covered as -
A = πr²
A = 3.14 x 3 x 3
A = 9 ft² {approx.}
So, the maximum area covered will be 9 ft².
Learn more about Areas here:
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Please help with this question.
Answer:
7/1000
Step-by-step explanation:
1 m = 1000 mm
Therefore,
Scale factor = 7/1000
a jar contains 6 red jelly beans, 6 green beans, and 6 blue jelly beans if we choose a jelly bean, then another jelly bean without putting the first one back in the jar, what is the probability that the first jelly bean will be green and the second will be green as well
======================================================
Explanation:
We have 6 green out of 6+6+6 = 18 total
The probability of getting green is 6/18 = 1/3.
After selecting that green jelly bean and not putting it back, we have 6-1 = 5 green out of 18-1 = 17 total.
The probability of selecting another green is 5/17.
Multiply the two fractions 1/3 and 5/17
(1/3)*(5/17) = (1*5)/(3*17) = 5/51
The probability of selecting two greens in a row is 5/51 where we do not put the first selection back. We also do not replace the green jelly bean with some other identical copy.
Note: 5/51 = 0.098039 approximately
Answer:
The answer is your face try again loser
Step-by-step explanation:
how can I evaluate 2x + y4 when X=5 y=9 ?
Answer: 46
Step-by-step explanation:
2 x 5 = 10
9 x 4 = 36
10 + 36 = 46
Answer:
46
Step-by-step explanation:
subsitute in x and y , so
2(5)+(9)4 = 10 + 36 = 46
<1 and <2 form a linear pair. If m<1= 4m<2, find the measure of each of the two angles.
Answer:
The angle ∠1 = x = 36°The angle ∠2 = 4x = 4(36°) = 144°Step-by-step explanation:
We know that when two lines meet or intersect, we get a linear pair of angles.
Linear pairs are basically two adjacent angles that form a line.
The measure of two adjacent angles forming a straight line is 180, meaning they are supplementary.
We are given that <1 and <2 forms a linear pair, and
m∠1 = 4m∠2
It means the angle ∠1 is 4 times the measure of angle ∠2.
Let the angle ∠1 be = x
As the angle 1 is 4 times the measure of angle ∠2, so
The angle 2 will be = 4x
As <1 and <2 forms a linear pair, thus the measure of the sum of <1 and <2 will be 180°, so
x + 4x = 180
5x = 180
divide both sides by 5
5x/5 = 180/5
x = 36°
Therefore,
The angle ∠1 = x = 36°The angle ∠2 = 4x = 4(36°) = 144°A town's population went from 25,000 to 30,000. What was the percent of change? ( Please explain your answer )
Write
0.33
as a fraction in simplest form.
Answer:
33/100
Step-by-step explanation:
What is the mean of 30 and 50?
Answer:
The mean is 40
Step-by-step explanation:
(30 + 50)/2 = 40
y = x - 1
x + 4y = 16
Im having troubles. Can some 1 explain in complete explanations and all expressions.
{x,y} = {4, -3}
Substitution :
// Solve equation [2] for the variable x
[2] x = 4y + 16
// Plug this in for variable x in equation [1]
[1] (4y+16) + y = 1
[1] 5y = -15
// Solve equation [1] for the variable y
[1] 5y = - 15
[1] y = - 3
// By now we know this much :
x = 4y+16
y = -3
// Use the y value to solve for x
x = 4(-3)+16 = 4
What can you conclude about DB?
BD bisect AC
Option B is the correct answer.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
From the figure,
FA is perpendicular to BC.
CFA is a right angle.
We see that BD bisects AC such that AD = CD.
Thus,
BD bisects AC
Learn more about triangles here:
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Translate the following into an algebraic expression: "five less than the product of 7 and
the square root of a number" can be written as:
05 – 71x
0 √5 - 7x
O 7x – V5
07/2o 5
Answer:
if i am not mistaken i believe it is 0 √5 - 7x
Step-by-step explanation:
When a number is decreased by 47%, the result is 20. What is the original number to the nearest tenth?
Answer:
37.7
Step-by-step explanation:
n - 0.47n = 20
0.53n = 20
n = 37.7
2. u + 6y = 32
u+ 3y = 17
Answer:
21
Step-by-step explanation:
If you have 100 apples and your friend eats 72 of them how many apples do you have left.
Answer:
28
Step-by-step explanation:
100 - 72 = 28
I need help so please .
Answer:
78 m
Step-by-step explanation:
We need to use the Pythagorean theorem, [tex]a^{2} + b^{2} = c^{2}[/tex].
Substitute in [tex]a[/tex] and [tex]b[/tex].
[tex]30^{2} + 72^{2} = c^{2}[/tex]
Simplify.
[tex]900 + 5184 = c^{2}[/tex]
Add.
[tex]6084 = c^{2}[/tex]
Square root both sides.
[tex]78 = c[/tex]
The hypotenuse is 78 m long.
find c:
a² plus b² = c
72² plus 30²=c
5I84 plus 900
6084
now square root that
78
so C=78
The ratio of boys to girls in a club is 4:5 what fraction of the club are boys
Answer:
4/9 are boys
Step-by-step explanation:
