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castortr0y [4]
2 years ago
10

Help me asap please be serious

Mathematics
2 answers:
GaryK [48]2 years ago
7 0

Answer:72=y

Step-by-step explanation:

mojhsa [17]2 years ago
7 0
Answer: y=72

Step-by-step: multiply both sides81=y/9+73
Move the terms729=y+657
Calculate -y=657-729
Change the signs -y=-72
Answer: y=72
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The triangle below is being reduced by a scale factor of two-thirds. What is the base of the new drawing? 15 m​
DanielleElmas [232]

Answer:

10

Step-by-step explanation:

A scale factor of 2/3 means multiplying all side lengths by 2/3

15*2/3=10

8 0
1 year ago
What is the percent of change from 45to56
soldier1979 [14.2K]

Answer:

24.44%

Step-by-step explanation:

initial value :45

final value:56

change in value= 56-45=11

percentage change= 11

\frac{11}{45}  \times  \frac{100}{1}

\frac{1100}{45}

=24.44%

3 0
3 years ago
Read 2 more answers
(9y® + 2)2 =<br> combine like terms
Vsevolod [243]

Answer:

81y^2+36y+4

Step-by-step explanation:

First: 9y^2= 81y

Next: 2^2= 4

Then: 9y times 2= 18

Last: 18 times 2= 36y

(this : ^2 means squared in case you did not know)

4 0
3 years ago
To estimate μ, the mean salary of full professors at American colleges and universities, you obtain the salaries of a random sam
GenaCL600 [577]

Answer:

<h3>73220±566.72</h3>

Step-by-step explanation:

The formula for calculating the confidence interval is expressed as;

CI = xbar ± z*s/√n

xbar is the sample mean =  $73,220

z is the z score at 99% CI = 2.576

s is the standard deviation = $4400

n is the sample size = 400

Substitute the given values into the formula;

CI = 73,220 ± 2.576*4400/√400

CI = 73,220 ± 2.576*4400/20

CI = 73,220± (2.576*220)

CI = 73220±566.72

Hence a 99% confidence interval for μ is 73220±566.72

5 0
2 years ago
Will mark brainly :)
WARRIOR [948]

Answer:

If is positive, then the parabola opens upward, so the function decreases on and increases on . But if is negative, then just the reverse

7 0
2 years ago
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