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2 years ago

11

Question 3: Solve this system. Use the substitution method .A .B .C .D

2 answers:

iren [92.7K]2 years ago

8 0

D hope this helps ._.

stealth61 [152]2 years ago

7 0

Answer:

d

Step-by-step explanation:

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Free points to whoever anwsers first 10+10

faust18 [17]

Answer:

20

Step-by-step explanation:

Thanks

6 0

3 years ago

Read 2 more answers

Solve the system of inequalities and indicate all the integers which are in the solution set:

elena-s [515]

1.) a>10
2.) a<3.5
How I got it: 1.) Subtract 3 from both sides, leaving -2a<10.
2.) Divide by -2 from both sides, remember to flip the inequality sign when dealing with negatives. This leaves you with a>10.
For number 2.) I divided both sides by 5, leaving a<3.5, though this answer may be wrong.

8 0

3 years ago

Negative solution for Multi-step equations

nydimaria [60]

Answer:

$\frac{1}{2}(4x+6)+3x=7x+9$

$\frac{1}{2}(4x+8)+3x=7x+9$

Step-by-step explanation:

By putting the numbers in the given equation,

$\frac{1}{2}(4x+6)+3x=7x+9$

2x + 3 + 3x = 7x + 9

5x + 3 = 7x + 9

(5x + 3) - 7x = (7x + 9) - 7x

(5x - 7x) + 3 = 9

-2x + 3 = 9

(-2x + 3) - 3 = 9 - 3

-2x = 6

$-\frac{2x}{2}=\frac{6}{2}$

-x = 3

x = -3

Therefore, our equation is correct which has a negative result.

In place of 6 if we use 8, value of x will be negative again.

3 0

3 years ago

What is the volume of a sphere with a radius of 9.5 ft, rounded to the nearest tenth of a cubic foot?

DiKsa [7]

Answer:

V = 3591.4 ft³

Step-by-step explanation:

The formula for the volume of a sphere whose radius is given is

V = (4/3)πr³

Here we have V = (4/3)(3.14)(9.5 ft)³, or:

V = 3591.4 ft³

6 0

3 years ago

I need help really bad please

yuradex [85]

Answer:

$9$

Step-by-step explanation:

$72 = 2^3 \cdot \boxed{3^2}$

$27 = 3 \cdot \boxed{3^2}$

3 0

2 years ago