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Semenov [28]
3 years ago
13

3(7 + x2); x = 2 (x is squared by 2) ( evaluate each expression for the given values of the variables)

Mathematics
1 answer:
dedylja [7]3 years ago
8 0

Answer:

33

Step-by-step explanation:

This is a substitution question,so to solve you will have to substitute... substitution question is when a specific number is given replace a certain number

Back to the question,3(7+x2)

And x is given to be 2

So let's continue by substituting the value of x into the equation

3(7+2^2)

3(7+4)

3(11)

33

The final answer is 33

Hope you understand how we get our final answer,just follow the step above

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Your answer is x=-32/13
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4 years ago
The product of a number and 9
Anna35 [415]

Answer:

9x

Step-by-step explanation:

let's say that x is the number we don't know

the product means multiplication

9*x=9x

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3 years ago
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Ax - b = c <br><br> Solve for x
7nadin3 [17]

ax - b = c

add b to each side

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3 0
3 years ago
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Suppose you can work at most a total of 25 hours per week. Baby-sitting, x, pays $6 per hour and working at the grocery store, y
Andrei [34K]

Answer:

<u><em>y=7  </em></u><u>number of hours at grocery store</u>

<u><em>x=18 </em></u><u>number of hours at baby- sitting</u>

Step-by-step explanation:

According to the information provided.

x is number of hours at baby- sitting

y is number of hours at grocery store

total number of hours worked

<em>1) </em><em>x+y =25</em>

total earn in a week

<em>2) </em><em>x*$6 + y* $9 = $171</em>

<em />

<em>from equation 1</em>

x+y=25

x= 25-y

<em>we place the above derived equation in equation 2 </em>

x*$6 + y* $9 = $171

(25-y)*$6 + y* $9 = $171

(25*6) -6y +9y =171

150+3y=171

3y=171-150

3y=21

<u><em>y=7  </em></u><u>number of hours at grocery store</u>

x= 25-y

x= 25-7

<u><em>x=18 </em></u><u>number of hours at baby- sitting</u>

3 0
3 years ago
2√6 ∙ √8 + 2√12<br><br>show your work please and thank you
meriva

Answer:

Step-by-step explanation:

multiply first,

so 2√6 x √8 = 2√48 (because when radicals are multiplied we add them)

so

2√48 can be simplified to 8√3 and 2√12 can be simplified to 4√3

8√3+4√3=12√3

8 0
3 years ago
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