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natta225 [31]
3 years ago
10

Please i need help!!!!I I will give Brainliest (need Help with this (Solving Equations with Efficiency) Topic:

Mathematics
1 answer:
zloy xaker [14]3 years ago
6 0
1. X=31
2. X= — 23/3 or -7.8 if putting in decimal form
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If 5 times a number is equal to the sum of twice the number and 15. What is the number?
Tom [10]

Answer:

5

Step-by-step explanation:

5x = 2x + 15

5x - 2x = 2x + 15 - 2x

3x = 15

x = 5

6 0
4 years ago
A blender was originally sold for $90 and has been marked
ale4655 [162]

Answer:

88%

Step-by-step explanation:

From the question given above, the following data were obtained:

Original amount = $ 90

Discounted amount = $ 79.20

Percentage of discount =?

Let the percentage of discount be y %

Thus, we can obtain the value of y as follow:

y /100 × 90 = 79.20

90y /100 = 79.20

Cross multiply

90y = 100 × 79.20

90y = 7920

Divide both side by 90

y = 7920/90

y = 88

Thus, the percentage discount of the blender is 88%

5 0
3 years ago
Read 2 more answers
Which description matches the graph of the inequality y ≥ |x + 2| – 3? a shaded region above a solid boundary line a shaded regi
Alex777 [14]
The given inequality is y ≥ |x + 2| -3.

This inequality may be written two ways:
(a) y ≥ x + 2 - 3
    or
    y ≥ x - 1

(b) y ≥ -x -2 - 3
    or
     y ≥ -x - 5

A graph of the inequality is shown below. The shaded region satisfies the inequality.

Answer: A shaded region above a solid boundary line.

6 0
3 years ago
Which is true about the solution to the system of inequalities shown?
vlabodo [156]

Answer:

Step-by-step explanation:

Which is true about the solution to the system of inequalities shown?

y 3x + 1

y 3x - 3

Only values that satisfy y 3x + 1 are solutions

Only values that satisfy y 3x3 are solutions

Values that satisfy either y a 3x + 1 orys 3x - 3 are solutions

7 0
3 years ago
For the following exercises, evaluate the expressions, given functions f, g, and h:
sertanlavr [38]

Answer:

- 16

Step-by-step explanation:

Evaluate f(2) by substituting x = 2 into f(x) , that is

f(2) = 3(2) - 3 = 6 - 3 = 3

Evaluate g(- 1) by substituting x = - 1 into g(x) , that is

g(- 1) = 8 - (- 1)² = 8 - 1 = 7

Thus

4f(2) - 4g(- 1)

= 4(3) - 4(7)

= 12 - 28

= - 16

7 0
3 years ago
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