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mel-nik [20]
3 years ago
11

Find the values of x and y

Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0

Answer:

x=30

Step-by-step explanation:

dive 3x both sides then u should get 10

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Torrey has $20 to buy a birthday present for her that she does this to buy a CD for $18 the sales tax is 7% does she have enough
Effectus [21]
No, because she will go over by .57 cents. So she won't be able to buy the gift. You can find the answer by dividing 18 by 7 and adding that answer to 18 to get the amount total you owe including tax. 
8 0
3 years ago
What is the value of the expression 5x2 + 2x when x = 5?
masha68 [24]

Answer:

135

Step-by-step explanation:

Given:

x = 5

To determine a numerical value for the expression, simply substitute the value of "x" into the expression and simplify the expression, if necessary, to determine a specific number for the expression provided.

  • \implies 5x^{2}  + 2x
  • \implies 5(5)^{2}  + 2(5) \longrightarrow \longrightarrow \longrightarrow (x = 5)
  • \implies 5(5)(5)  + 2(5)
  • \implies 125  + 10
  • \implies 135

Therefore, the value of the expression 5x^{2}  + 2x when x = 5 is 135.

Learn more about this topic: brainly.com/question/27675691

7 0
2 years ago
Please help me with 5
iren2701 [21]

Answer:

Fourth chice, 3/5

Step-by-step explanation:

Add all the numbers together, 12 + 3 + 5 = 20

There's 12 green cubes out of the 20 cubes so it's 12/20 which is 3/5

5 0
3 years ago
What is the percent of decrease from 6 to 5.4?
Helga [31]

Answer:

The percent decrease from 6 to 5.4 is 10%.

Step-by-step explanation:

5 0
3 years ago
Solve the following:<br> a) 4x=1 = x +7<br> b) 3x+2 = 2x + 13
Yuliya22 [10]
A) x=2; i’m guessing if you meant by 4x+1=x+7
5 0
3 years ago
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