All categories

3 years ago

14x+7y=217 14x+3y=189

Mathematics

1 answer:

kondor19780726 [428]3 years ago

4 0

Answer:

y = 7

x = 12

Step-by-step explanation:

14x+7y=217, then 14x = 217 - 7y

14x+3y=189, then 14x = 189 - 3y

217 - 7y = 189 - 3y

add 7y to each side of the equation:

4y + 189 = 217

subtract 1890 from each side:

4y = 28

divide both sides by 4:

y = 7

14x + 3(7) = 189

subtract 21 from each side:

14x = 168

divide both sides by 14:

x = 12

You might be interested in

Simplify the following square root √ -1 =

quester [9]

Answer:

1 .

because sqare root of -1= 1

3 0

3 years ago

Read 2 more answers

Two angles are supplementary. The measure of one angle is 5 greater than 40% of the other. Find the measures of both angles.

Irina18 [472]

Answer:

Step-by-step explanation:

0.40beta%2Bbeta=180-5

1.40beta=175

beta=175%2F1.40

highlight%28beta=125%29�

then alpha%2B125=180 =>alpha=180-125 =>highlight%28alpha=55%29

6 0

3 years ago

What degree would be classified as an obtuse angle but is close to being a straight line

Liono4ka [1.6K]

Answer: 171

Step-by-step explanation:

An obtuse angle means more than 90 degrees. (90 degrees would be the inside corner of your notebook paper) a straight line would be 180 degrees. 171 is the closest to 180

6 0

2 years ago

Copy the figure below onto a separate sheet of paper. Find the image of the figure under reflections in line m and then line t.

san4es73 [151]

The image of the figure under reflections in line m and then line t is shown below.

<h3>What is a transformation of geometry?</h3>

A spatial transformation is each mapping of feature shapes to itself, and it maintains some spatial correlation between figures.

Reflection does not change the size and shape of the geometry.

The image of the figure under reflections in line m and then line t.

The reflection of the rectangle DEFG will be given in the figure.

More about the transformation of geometry link is given below.

brainly.com/question/22532832

#SPJ1

4 0

2 years ago

Find the derivative of the inverse function of the original function f(x)=(x+1)^3-5

____ [38]

Answer:

Step-by-step explanation:

let f(x)=y

$y=(x+1)^{3} -5\\flip ~x~and~y\\x=(y+1)^{3}-5\\(y+1)^{3}=x+5\\y=(x+5)^{\frac{1}{3} } -1\\or~f^{-1}(x)=(x+5)^{\frac{1}{3} } -1\\(f^{-1})'(x)=\frac{1}{3} (x+5)^{\frac{-2}{3} }$

4 0

3 years ago