Answer:
Step-by-step explanation:
If we want to find the axis of symmetry of the parabola of [tex]y=-4x^{2} -8x-7,[/tex] we would use the formula of [tex]-\frac{b}{2(a)}[/tex] to find it.
b=-8
a=-4
so the formula would look like this [tex]-\frac{-8}{2(-4)}[/tex], simplify it >>>[tex]-\frac{-8}{-8}[/tex] which is -1
So -1 would be the axis of symmetry
*It would mean a lot to me if you guys gave this post a "THANKS"
Which equation is true when the value of x is -6
Answer:
x(4 + 4) + 16 = -32
Step-by-step explanation:
-6 times 4 is -24 so then you add -24 + -24 and get -48. Then if you add a positive 16 to the -48 you get -32.
Sophie went to the lake with her family. First, they spent 1 1/4
hours fishing. Then, they spent twice as much time swimming. How much time did they spend fishing and swimming in all?
Write your answer as a whole number, fraction, or mixed number.
Answer:
2
Step-by-step explanation:
Help I need answers don’t know the answer
HELP PLZZZZ
THANK YOU SO MUCH FOR HELPING ME!!!!
A chicken farm produces ideally 400,000 eggs per day but this total came very buy as many as 30,000 eggs what is the maximum and minimum expected production at the farm?
Answer:
400,000+30,000
430,000
400,000-30,000
370,000
Step-by-step explanation:
If m 24 = 35º, find m_2 and m23.
А
00
2
4
.
m22 =
m23 =
Answer:
m22 answer will be in your book only
Can anybody tell the answer of -12xy+4xy
Step By Step because I am really confused.
Find the axis of symmetry for the function below.
2x^2 – 8x + 5 = 0
For every line there can exist a coplanar parallel line. true or false?
Answer:
T
Step-by-step explanation:
For each equation below, determine if the given value is a solution or not. 12- x= x, x = 3
Answer:
no that is not a solution
Step-by-step explanation:
12-x=x or 12-3=3 is not a solution because the answer doesnt make the equation
Help please.... I have got this wrong 2xs only once chance left
Answer:
a: 5x-1 = -6
b: 5x-1 = -6
+1 +1
5x = -5
divide
x = -1
Why is "3 meals a day" a unit rate?
O It compares 1 meal to 1 day.
O It compares 1 meal to 3 days.
O It compares 3 meals to 1 day.
Olt compares 3 meals to 3 days.
Answer:
it compares 3 meals to 1 day
Train A is traveling at 70 mph to a destination 200 miles away. Train B will leave 20 minutes after train A. Train B will leave from Train A's destination and will head in Train A's direction. If Train B will be going at a speed 32 of Train A's, how long after Train A left will it take before Train B arrives at Train A's starting point? Round your answer to the nearest tenth of an hour
Answer:
The answer is "2.2 h"
Step-by-step explanation:
Speed of Train B:
[tex]= \frac{3}{2} \times 70 \ mph \\\\= 105 \ mph[/tex]
Train B is then moving on:
[tex]= \frac{200 \ miles}{ 105 \ mph} \\\\= 1.905 \ h\\[/tex]
Then it takes Train A to the left:
[tex]\to 1.905\ h + 20 \ min \\\\= 1.905 \ h +0.333 \ h \\\\= 2.238 \ h[/tex]
To get train B to the reference point of train A = 2.2 h
Convert to standard form:
-8x + 7y = 6 - 12x
Answer:
4x+7y = 6
Step-by-step explanation:
-8x + 7y = 6 - 12x
add 12x in both sides
4x+7y = 6
What is the answer for number 4
Answer:
x=-13
Step-by-step explanation:
All you have to do is divide 8 by both sides because you want to get x by itself.
What % of 73 is eleven point one?
Answer:
15%
Step-by-step explanation:
11.1 / 73 = 0.152054~
That answer rounded to the nearest hundreth is 0.15 so it'd be 15%
Dilations always increase the length of line segments
True
False
Dilations increase the measure of angles.
Group of answer choices
True
False
Dilations of a triangle are similar to the original triangle.
Group of answer choices
True
False
s congruent to . If angle S is (5x-11) degrees and angle U is (4x+9) degrees, find the value of x.
Given:
Consider angle S is congruent to angle U.
The angle S is (5x-11) degrees and angle U is (4x+9) degrees,
To find:
The value of x.
Solution:
Since it is given that angle S is congruent to angle U, therefore the measure of theses two angles are equal because measure of congruent angles are equal.
[tex]m\angle S=m\angle U[/tex]
Put the given values.
[tex]5x-11=4x+9[/tex]
Subtract 4x from both sides.
[tex]5x-4x-11=9[/tex]
Add 11 on both sides.
[tex]x=9+11[/tex]
[tex]x=20[/tex]
Therefore, the value of x is 20.
Find the circumference of a circle with a diameter of 6 yd. leave your answer in terms of pi.
Answer:
18.85yd I think am not sure
The ratio between the ages of Amar and Kabir is 3:4 at present.after 4 years ago their ages would be 7:9.ratio of ages of Kabir and amar after 20 years from now?
Answer:
[tex]Ratio = 11:13[/tex]
Step-by-step explanation:
Represent Amar age with x
Represent Kabir age with y
So, we have:
Presently
[tex]x : y = 3 : 4[/tex]
After 4 years
[tex]x + 4 : y + 4 = 7 : 9[/tex]
Simplify both ratios:
[tex]x : y = 3 : 4[/tex]
[tex]\frac{x}{y} = \frac{3}{4}[/tex]
Cross Multiply
[tex]4x = 3y[/tex]
Make x the subject
[tex]x = \frac{3}{4}y[/tex]
[tex]x + 4 : y + 4 = 7 : 9[/tex]
[tex]\frac{x + 4}{y + 4} = \frac{7}{9}[/tex]
Cross Multiply
[tex]7(y+4) = 9(x+4)[/tex]
Open Brackets
[tex]7y + 28 = 9x + 36[/tex]
Collect Like Terms
[tex]9x = 7y + 28 - 36[/tex]
[tex]9x = 7y -8[/tex]
Substitute [tex]\frac{3}{4}y[/tex] for x in [tex]9x = 7y -8[/tex]
[tex]9(\frac{3}{4}y) = 7y - 8[/tex]
[tex]\frac{27}{4}y = 7y - 8[/tex]
[tex]6.75y = 7y - 8[/tex]
[tex]6.75y - 7y = - 8[/tex]
[tex]-0.25y = - 8[/tex]
[tex]y = -8/-0.25[/tex]
[tex]y = 32[/tex]
Substitute 32 for y in [tex]x = \frac{3}{4}y[/tex]
[tex]x = \frac{3}{4} * 32[/tex]
[tex]x = \frac{3* 32}{4}[/tex]
[tex]x = \frac{96}{4}[/tex]
[tex]x = 24[/tex]
So, in 20 years time, the ratio of the ages would be:
[tex]x + 20 : y + 20[/tex]
This gives
[tex]24 + 20 : 32 + 20[/tex]
[tex]44 : 52[/tex]
Divide by 4
[tex]44/4:52/4[/tex]
[tex]11:13[/tex]
Hence, the Ratio is
[tex]Ratio = 11:13[/tex]
Jessica is on a the swim team. Each day she swims 8000m. Use the the fact to find how much this is in kilometers
Answer:
8 Kilometers
Step-by-step explanation:
1m=0.001km
So...
8000m=8km
Answer:
0.8
Step-by-step explanation:
Jessica can swim a lap in seconds
Converting it into decimals,
Means seconds
Means Jessica can swim a lap in 29.4 seconds
Marta can swim a lap in 28.7 seconds.
So, Martha is faster than Jessica by seconds
Manatees are an endangered species of herbivorous, aquatic mammals found primarily in the rivers and estuaries of Florida. As part of its conservation efforts, the Florida Fish and Wildlife Commission records the cause of death for every recovered manatee carcass in its waters. Of the 392392 recorded manatee deaths in 2012, 6868 were perinatal and 8181 were caused by collision with a watercraft. (a) What is the probability that the death of a randomly selected manatee was due to collision with a watercraft? (Enter your answer rounded to four decimal places.)
Answer:
Other question are " (b) What is the probability that the death was not due to collision with a watercraft? (Enter your answer rounded to four decimal places.) P(not collision) - (c) What is the probability that the cause of death was due to perinatal problems or collision with a watercraft? What is the
(c) What is the probability that the cause of death was due to perinatal problems or collision with a watercraft? What is the probability that it was due to some other cause? (Enter your answers rounded to four decimal places.) P(perinatal or collision) P(other cause) -"
a) P(collision) = Number of deaths caused by collision / Total number of deaths
P(collision) = 81/392
P(collision) = 0.2066
b) P(not collision) = 1 - P(collision)
P(not collision) = 1 - 0.2066
P(not collision) = 0.7934
c) P(perinatal or collision) = (68+81)/392
P(perinatal or collision) = 0.3801
P(other cause) = 1 - 0.3801
P(other cause) = 0.6199.
Victor has a goal of making $75 per week at his after-school job. Last month he was within $6.50 of his goal. What are the maximum and minimum amounts that Victor might have made last month?
Answer:
maximum is 81.50
minimum is 68.50
Step-by-step explanation:
1m-751=6.50
m-75=6.50
m=81.50
/m-75=-6.5
m=68.50
The maximum and minimum amounts that Victor might have made last month are $81.5 and $68.5, respectively.
What is Addition?The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.
Given that Victor has a goal of making $75 per week at his after-school job. and Last month he was within $6.50 of his goal. Therefore, the maximum and minimum amounts that Victor might have made last month are,
Maximum and minimum amount = $75 ± $6.50
= $75+$6.50 , $75-$6.50
= $81.5 , $68.5
Hence, the maximum and minimum amounts that Victor might have made last month are $81.5 and $68.5, respectively.
Learn more about Addition here:
https://brainly.com/question/14092461
#SPJ2
A study revealed a strong, linear, positive association between the amount of shampoo used and the length of hair. Another study revealed a strong, linear, positive association between amount of conditioner used and the length of hair. When the data were combined, the association became negative. What is this an example of?
Answer:
Step-by-step explanation:
B
Answer:
Simpson's Paradox
Step-by-step explanation:
2/3÷2 1/3= dividing fractions
Answer:
3/3
Step-by-step explanation:
3/3
3.5 or 3 1/2 just comment if you need to show work :)
Solve the equation for x.
3x + 11 – X + 23 = 4
Answer:
x = -15
Step-by-step explanation:
3×+34-×=4
2×+34=4
2×+34-34=4-34
2×=4-34
2×= -30
2×/2=-30/2
×= -15
A conjecture and the paragraph proof used to prove the conjecture are shown. 100 points please help
Answer:we USED
Step-by-step explanation:
please make me brainliest
Answer:
1- angle congruence postulate
2- definition of complementary
3- m<3
4- <3
A pair of shoes regularly costs $65.00. I paid $58.50 for the shoes. What was the percent discount that I
received
Answer:
i think you received 7 percent discount
Answer:
Hi there
Your answer is
10% discount
Step-by-step explanation:
$65=100%
/65 to determine percent per 1$
1$= 1 & 7/13ths or 20/13ths
*58.5
58.5$ = 90%
Your received a 10% discount because 100-90=10
CHECK YOUR WORK
.1 * 65 = 6.5
65-6.5=58.5
Plot the number 2.78 on a numberline between 2.7 and 2.8
Answer:
On the screenshot below, each little line represents 0.1. It's not labeled 2.7 and 2.8, but if you count the tick marks by 0.1, it shows that exact approximation.
I hope this helps!
Answer:
<│--------│----------│-----------│----------│----------│-----------│-----------│------------│------│>
2.7 2.71 2.72 2.73 2.74 2.75 2.76 2.77 2.78 2.8
10 less than a number x
Answer:
x-10
Step-by-step explanation:
