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djyliett [7]
3 years ago
5

Please help i need to finish this!!

Mathematics
1 answer:
s2008m [1.1K]3 years ago
5 0

Answer:

20 inches x 26 inches

Step-by-step explanation:

set up an equation: (2x)(x+7)=520

now just solve it

2x^2+14x=520

x^2+7x-260 = 0

factor: (x-13)(x+20)

x = 13 and -20

13 is the only one that works because you can't have a negative side length

13+7=20

13*2=26

lmk if you don't understand how to solve that equation

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A line has a slope of -4 and passes through the point (0,5). Write the equation of this line in standard form. Be sure to expres
emmainna [20.7K]

Answer:

Final answer in standard form of the line is 4x+y=5.

Step-by-step explanation:

Given that slope of the lime m = -4

Now we need to find the equation of a line that has a slope of -4 and passes through the point (0,5). Write the equation of this line in standard form.

So plug the given slope m=-4 and the point (0,5) into point slope formula:

y-y_1=m\left(x-x_1\right)

y-5=-4\left(x-0\right)

y-5=-4\left(x\right)

y-5=-4x

y=-4x+5

4x+y=5

Hence final answer in standard form of the line is 4x+y=5.

5 0
3 years ago
Read 2 more answers
Please help! Correct answer only, please! I need to finish this assignment this week. What are the dimensions of the matrix show
Katena32 [7]

Answer:

3 x 5

Step-by-step explanation:

The dimension of a matrix is normally represented in form of:

<u>number of rows</u> x <u>number of columns</u>

In the given matrix, there are 3 rows and 5 columns.

=> The dimension of this matrix is 3 x 5

=> Option D is correct

Hope this helps!

5 0
3 years ago
HELP ASAP
boyakko [2]

Answer:

4 ounces

Step-by-step explanation:

46/92 is one half so the recipe out of 100 is divided in half

8/2=4

the recipe also doesn't sound to appetizing

7 0
3 years ago
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saul85 [17]
If the first function is
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3 years ago
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A cube has a side length A. The side lengths ate decreased by 20%. Write an expression in simplest form.
vazorg [7]
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3 years ago
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