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3 years ago

Solve for x. Write the smaller solution first, and the larger solution second.

Mathematics

1 answer:

Shkiper50 [21]3 years ago

5 0

Answer:

Step-by-step explanation:

x^2 + 3x - 10 = 0

(x - 2)(x + 5) = 0

x - 2 = 0 x + 5 = 0

x = 2 x = -5

smaller x = -5

larger x = 2

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5) –2x – 9y=-25<br> -4x – 9y=-23

notka56 [123]

Answer:

(-1,3)

Step-by-step explanation:

–2x – 9y=-25

-4x – 9y=-23

Multiply the second equation by -1

4x + 9y=23

Add this to the first equation

–2x – 9y=-25

4x + 9y= 23

-----------------------

2x = -2

Divide each side by 2

2x/2 = -2/2

x = -1

Now we need to find y

4x+9y = 23

4(-1) +9y = 23

-4 +9y = 23

Add 4 to each sdie

-4+4 +9y = 23+4

9y = 27

Divide each side by 9

9y/9 = 27/9

y =3

5 0

3 years ago

Read 2 more answers

Melvin has $25 dollars to spend. He spent $10.81, including tax, to buy a new DVD. He needs to save $10.00 but he also wants to

ElenaW [278]

Answer:

Melvin can buy 11 package Peanuts

Step-by-step explanation:

8 0

3 years ago

What is the average rate of change of the function f(x) = 5x ^ 2 + 20x between x = 0 and x = 0.5

Vitek1552 [10]

9514 1404 393

Answer:

22.5

Step-by-step explanation:

The average rate of change on the interval [a, b] is the ratio ...

(f(b) -f(x))/(b -a)

For your function and interval, it is ...

(f(0.5) -f(0))/(0.5 -0)

Since f(0) = 0, this reduces to ...

average rate of change = 2·f(0.5) = 2(5(0.5)² +20(0.5)) = 2(5/4 +10)

average rate of change = 22.5

8 0

3 years ago

6. RVHS sold 143 Adult and Student tickets to the

slava [35]

Answer:

57 adult tickets, 86 student tickets

7 0

3 years ago

The volume, V, of any cube with a side length, s. can be determined using the forma

Tpy6a [65]

Answer:

V=12.167

Step-by-step explanation:

V=s^3

V=2.3x2.3x2.3

V=12.167

Since it is cubic centimeters, then it is written as 12.167cm^2

4 0

3 years ago