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svlad2 [7]
2 years ago
14

Help me answer this question !!! pleaseee

Mathematics
1 answer:
Dima020 [189]2 years ago
3 0

Answer:

im not sure but i think its 15

Step-by-step explanation:

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Which ordered pair is a solution to the equation?
Ivenika [448]

Answer:

D

Step-by-step explanation:

none of the option satisfy the equation

3 0
2 years ago
I need help with ANLGES!!!!
Phantasy [73]

Answer:

32, consecutive interior angles are supplementary.

Step-by-step explanation:

We know that the two angles add up to 180, because consecutive interior angles are supplementary. So let's set up an equation equal to 180.

2x + 3x + 20 = 180

Now let's add like terms.

5x + 20 = 180

Now let's subtract 20 from both sides.

5x = 160

Now let's divide both sides by 5.

x = 32

3 0
2 years ago
Read 2 more answers
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a pers
tino4ka555 [31]

Answer:

19 situps

Step-by-step explanation:

Given that the regression equation to find a  a relationship between hours of TV watched per day (x) and number of situps a person can do (y) was done.

The result was

y = ax+b

y = -1.23x+22.738\\

Correlation coefficient = 0.865

To predict the number of situps a person who watches 3 hours of TV

y = -1.23(3)+22.738

= 19.048

Approximately 19 situps.

6 0
3 years ago
Use the function a = m + 4 to find the value of a when m = 3.<br> a =
RUDIKE [14]

Answer:

a=m+4

a=3+4

a=7

Step-by-step explanation:

hope it helps

mark as brainlist

8 0
2 years ago
Read 2 more answers
How much water should be added to 3 gallons of pure alchohol in order to obtain a solution that is 15% alchohol?
lidiya [134]

say we're going to add "x" gallons of water, now how many gallons of alcohol is in pure water? well 0%, and 0% of "x" is (0/100) * x = 0.

the 3 gallons we know are 100% alcohol, how many gallons of alcohol is in it?  well (100/100) * 3 = 3.

the resulting mix will have x + 3 gallons total and it's going to be 15% alcohol, how many gallons of alcohol is that? (15/100) * (x+3).

now, the amount of alcohol never increased, so the original 3 gallons of only alcohol will remain even after the water has been added, so.

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{gallons of }}{amount}\\ \cline{2-4}&\\ \textit{pure water}&x&0.00&0\\ \textit{pure alcohol}&3&1.00&3\\ \cline{2-4}&\\ mixture&x+3&0.15&0.15(x+3) \end{array} \begin{array}{llll} \\[3em] \leftarrow \textit{this amount}\\\\ \leftarrow \textit{must be equal to this one} \end{array} \\\\\\ 3 = 0.15(x+3)\implies 3=0.15x+0.45\implies 2.55=0.15x \\\\\\ \cfrac{2.55}{0.15}=x\implies 17=x

5 0
2 years ago
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