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Semenov [28]
2 years ago
10

Which of the following equations has a solution of x = -5?

Mathematics
2 answers:
polet [3.4K]2 years ago
5 0

Answer:

B

Step-by-step explanation:

16(-5) - 7 = 11(-5) - 32

-80 - 7 = -55 - 32

-87 = -87

-4(-5) - 10 = 2(-5) + 20

-30 ≠ 10

dusya [7]2 years ago
5 0

Answer:

c. Both A and B

Step-by-step explanation:

Let's solve the equations to find out.

Equation A

16x - 7 = 11x - 32

5x - 7 = -32

5x = -25

x = -5

So, Equation A has a solution of x = -5.

Equation B

-4x - 10 = 2x + 20

-6x - 10 = 20

-6x = 30

x = -5

And so does Equation B.

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A line passes through (-1,7) and (2,10) which answer is the equation of the line
alekssr [168]

Answer: -x + y = 8

Step-by-step explanation:

So first you are going to want to find the slope of the equation. The equation for that it (y2 - y1)/(x2 - x1) = (10 - 7)/(2 - -1) and that equals 1. So your slope will be 1.

Now you have half of your equation complete, currently it looks like, y = x + b. So we have to find the y intercept. You can do that by plugging in a pair of coordinates into the current equation and solve for b.

Lets plug in (2,10)

10 = 2 + b

10 - 2 = b

b = 8

So now you have your equation in slope intercept form, y = x + 8. Just move the x over to the left side and there is your answer.

-x + y = 8

5 0
3 years ago
A water dispenser has a capacity of 20,000 milliliters. Use the facts to find how much this is in liters .
laila [671]
Answer:

The water dispenser's capacity in liters is 20liters

Explanation:

Given:

A water dispenser capacity = 20,000milliliters

To find

the capacity of the water dispenser in liters

To determine the capacity in liters, we will convert the capacity in ml to liters using the conversion:

1000ml = 1 liter

let the capacity of the water dispenser in Liters = y

\begin{gathered} 1000ml\text{ = 1 L} \\ 20000ml\text{ = y} \\ cross\text{ multiply:} \\ y(1000)\text{ = 1\lparen20000\rparen} \\ 1000y\text{ = 20000} \end{gathered}\begin{gathered} divide\text{ both sides by 1000:} \\ y\text{ = }\frac{20000}{1000} \\ y\text{ = 20} \end{gathered}

The water dispenser's capacity in liters is 20liters

5 0
1 year ago
2<br> Simplify the expression by combining like terms.<br> 2x + 4y + 6 + 2y - 5+ 3x<br> &lt;
Katen [24]

Answer:

5x + 6y + 1

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
The cost of producing 4 metal units is $204 80. The cost of producing 8 units is $209 60. What is the cost to produce 12 units?
Anuta_ua [19.1K]
614.40 because 204.80 divided by 4 is 51.20 and 51.20 multiplied by 12 is 614.40
6 0
3 years ago
What is the slope of the line that contains the points (-1, 8) and (2, -4)​
Reptile [31]

Answer:

+5 is the slope

Step-by-step explanation:

4 0
3 years ago
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