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3 years ago

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{8x + 9y = −3 6x + 7y = 1 What values of x and y satisfy the system of equations

1 answer:

posledela3 years ago

6 0

Answer:

A) 8x + 9y = −3

B) 6x + 7y = 1

We multiply A) by -(6/8)

A) -6x -6.75y = 2.25 then we add this to equation B

B) 6x + 7y = 1

.25y = 3.25

y = 13

and x = -15

Step-by-step explanation:

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The cross section of a hopper for containing balls is shown.

svp [43]

ANSWER

$14 \: ft$

EXPLANATION

Let the top of the hopper be

$l \: ft$

Then, by the cosine rule,

${l}^{2} = {13}^{2} + {15}^{2} - 2(15)(13) \cos(59.5 \degree)$

We evaluate to get,

${l}^{2} = 169 + 225 - 390\cos(59.5 \degree)$

${l}^{2} = 394 - 197.94$

${l}^{2} = 196.06$
Take positive square root of both sides to get,

$l = \sqrt{196.06}$

$l = 14.00$

3 0

3 years ago

Read 2 more answers

Subtract the rational expression and simplify<br> x+2/2x-6 - x+3/5x-15

SashulF [63]

Answer: -3x² - 2x -57

This is how this would look: $\frac{x+2}{2x-6} - \frac{x+3}{5x-15}$

First I brought the denominator to the top for both expressions.

so I was left with: 2x-6(x+2) - 5x-15(x+3)

I distributed, combined like terms, and simplified.

<em><u> -3x² - 2x -57</u></em> was my answer

Step-by-step explanation:

Trust Milky. Milky smart.

7 0

3 years ago

Which is the wrong one? BIGGER OR SMALLER <br><br> help

harina [27]

Answer:

It's D. 1.2(line) < 3.1(pi) < 4.6(square root 22)

Step-by-step explanation:

Look in the comments to figure out why D is correct. You're welcome! :)

7 0

3 years ago

Lina20 [59]

Answer:

(0 , 3)

Step-by-step explanation:

simplify the equation

y = $\frac{3}{2}$ x + 3

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4 years ago

" Draw three lines with slope 2, and three lines with slope 1/3. What do you notice "

Tom [10]

Answer:

Step-by-step explanation:

1.

all the lines with slope 2 are parallel with each-other

all the lines with slope 1/3 are parallel with each-other

2.

all lines have positive slope so they go upward from left to right

3.

slope 2 is steeper then slope 1/3

4.

the distance between the parallel lines with slope (1/3) is greater for the lines with the slope 2

6 0

3 years ago