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IRINA_888 [86]
3 years ago
7

PLEASE I NEED HELP

Mathematics
1 answer:
Brums [2.3K]3 years ago
5 0

Answer:

9

Step-by-step explanation:

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Please help asap!!! i’ll rate you most brainliest
SSSSS [86.1K]
I’m pretty sure it’s D??? But it also could be B I’m sorry :( trying to help as much as possible
6 0
3 years ago
Find the slope between the points (−3,−5) and (10,-5)
balandron [24]

Answer:

0

Step-by-step explanation:

m = \dfrac{y_2 - y_1}{x_2 - x_1}

m = \dfrac{-5 - (-5)}{-3 - 10}

m = \dfrac{0}{-13}

m = 0

3 0
3 years ago
Read 2 more answers
Solve for x. The number that is cut off is 14. Suppose that both figures are similar.
Mekhanik [1.2K]

Since both rectangles are similar, the following ratio must be fulfilled:

\frac{x+9}{14}=\frac{9}{6}

By multiplying both sides by 14, we get

\begin{gathered} x+9=\frac{9\times14}{6} \\ x+9=21 \end{gathered}

and by subtracting 9 to both sides, we have

x=12

Therefore, the answer is 12.

5 0
1 year ago
A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead. How many grams of e
dmitriy555 [2]

The amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead.

Let's suppose the x is the amount of the first alloy and y is the amount of the second alloy:

We can make two linear equation in two variables:

0.05x + 0.3y = 31.5  ...(1)

0.2x + 0.5y = 105  ...(2)

After solving the above two linear equations by substitution method, we get:

x = 450 grams

y = 30 grams

Thus, the amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

3 0
2 years ago
A photograph 5 inches wide by 6 inches high is to be enlarged so that the new height is 20 inches. what will the width of the en
Vika [28.1K]
The new width is 16.6666666667 inches, which can be rounded to 16.7. 

Width:     5           ?
Height:    6          20

We know that based on the information provided, the new height is 20 inches.

So, in order to solve, you can cross multiply (5 x 20), which would be 100. Then

divide by 6, to get 16.6666666667 or 16.7.
7 0
3 years ago
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