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3 years ago

8

In the diagram what is m

1 answer:

Dahasolnce [82]3 years ago

4 0

Where is the diagram?

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9x-2y=-21 2x+3y=16 Substitution

hjlf

$9x-2y=-21 \\\\ 9x=-21+2y \\\\ => \boxed{x=\frac{2y-21}{9}} \\\\ 2x+3y=16 \\\\ 2*\frac{2y-21}{9}+3y^{(9}=16^{(9} \\\\ 2(2y-21)+27y=144 \\\\ 4y-42+27y=144 \\\\ 31y=144+42 \\\\ 31y=186 \\\\ \boxed{y=\frac{186}{31}=6} \\\\ x=\frac{2*6-21}{9} \\\\ x=\frac{12-21}{9} \\\\ x=\frac{-9}{9} \\\\ \boxed{x=-1}$

3 0

3 years ago

Consider the differential equation 2y'' + ty' − 2y = 14, y(0) = y'(0) = 0. In some instances, the Laplace transform can be used

andreyandreev [35.5K]

Answer:

Whoaaaa a picture would explain more than jus words

Step-by-step explanation:

8 0

2 years ago

Challenge Three friends started savings accounts at the same time, with the same initial deposit.

Wittaler [7]

Answer: B

Step-by-step explanation:

ez

5 0

2 years ago

Read 2 more answers

2x^2-4x-30 factored please. I m doing a test

bearhunter [10]

Answer:

2(x+3)(x−5)

Step-by-step explanation:

4 0

3 years ago

Use ABC to find the value of cos a. 24/7 7/24 7/25 24/25

ExtremeBDS [4]

Answer:

$\frac{24}{25}$

Step-by-step explanation:

using the cosine ratio;

$\cos(\theta)= \frac{adjacent}{hypotenuse}$

From the question, the side of the right angle triangle that is adjacent to the measured <a,(i.e BAC) is AC=24 and the hypotenuse is AB=25

This implies that,

$cos(a)= \frac{24}{25}$

6 0

2 years ago