3 years ago

I need help?????????

Mathematics

1 answer:

amid [387]3 years ago

3 0

Answer: I got D i'm not sure if that right though..

Step-by-step explanation:

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twice the sum of a number and 2 is equal to three times the difference of the number and 8. Find the number.

Leto [7]

Answer: x = -22

Step-by-step explanation:

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4 0

3 years ago

X + 2y = 5 x - 3y = 7 What is the value of the y-determinant? -2 -1 2

grandymaker [24]

Answer:

y-determinant = 2

Step-by-step explanation:

Given the following system of equation:

x + 2y = 5
x - 3y = 7

Let's represent it using a matrix:

$\left[\begin{array}{ccc}1&2\\1&-3\end{array}\right] = \left[\begin{array}{ccc}5\\7\end{array}\right]$

The y‐numerator determinant is formed by taking the constant terms from the system and placing them in the y‐coefficient positions and retaining the x‐coefficients. Then:

$\left[\begin{array}{ccc}1&5\\1&7\end{array}\right]$

y-determinant = (1)(7) - (5)(1) = 2.

Therefore, the y-determinant = 2

5 0

3 years ago

The coffee pub has cans of coffee that weigh 4 4/5 pounds each. The pub has 8 1/2 cans of coffee left. What is the total weight?

tankabanditka [31]

4.8 x 8.5 = 40.8 lbs total
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2 years ago

Sara shaded 2/10 of a piece of grid paper. Derrick shaded 45/100

soldi70 [24.7K]

Answer:

Derrick shaded more

Step-by-step explanation:

I didn't know what you want me to answer but he has more.

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2 years ago

1. 7(6-(-4)) What is this I don’t know

Marina CMI [18]

So you would start with removing the parentheses so 6- - 4 would be 6+4 because the double negative and then that would be 10 so 7 times 10 so your answer is 70

5 0

3 years ago

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