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sweet-ann [11.9K]

3 years ago

14

If 9 is subtracted from a certain number and the difference is divided by 3

1 answer:

nekit [7.7K]3 years ago

8 0

Is answer 21? i assumed number as x then i followed the process

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Find the measures of the angles.

Keith_Richards [23]

Answer:

a1=90

a2=27

a3=61

a4=29

7 0

3 years ago

Please help me with this one ☝️

Ronch [10]

I need this one too omgggg

7 0

3 years ago

Use addition to solve the linear system of equations.<br> {y=-3x+x<br> {y=2x-4

Scilla [17]

<span>A) y=-3x+x
</span>
<span>B) y=2x-4

Are you sure about equation A -3x + x?

</span>
<span>A) 2x +y=0
</span>
<span>B) -2X + y= -4
</span>

4 0

3 years ago

Which ordered pair is a solution to the system of linear equations 1/2x-3/4y=11/60 and 2/5x+1/6y=3/10

natka813 [3]

ANSWER

$( \frac{2}{3} , \frac{1}{5} )$

EXPLANATION

The first equation is

$\frac{1}{2} x - \frac{3}{4} y = \frac{11}{60} ...(1)$

The second equation is

$\frac{2}{5} x + \frac{1}{6} y = \frac{3}{10} ...(2)$

We want to eliminate y, so we multiply the first equation by

$\frac{4}{5}$

$\frac{4}{5} \times \frac{1}{2} x - \frac{4}{5} \times \frac{3}{4} y = \frac{11}{60} \times \frac{4}{5}$

$\frac{2}{5} x - \frac{3}{5} y = \frac{11}{75} ...(3)$

We now subtract equation (3) from (2)

$(\frac{2}{3} x - \frac{2}{3} x )+ ( \frac{1}{6} y - - \frac{3}{5}y ) =( \frac{3}{10} - \frac{11}{75} )$

$\frac{1}{6} y + \frac{3}{5}y =\frac{3}{10} - \frac{11}{75}$

$\frac{23}{30}y = \frac{23}{150}$

Multiply both sides by

$\frac{30}{23}$

$\implies \: \frac{30}{23} \times \frac{23}{30}y= \frac{23}{150} \times \frac{30}{23}$

$\implies \: y = \frac{1}{5}$

Substitute into the first equation to solve for x .

$\frac{1}{2} x - \frac{3}{4} \times \frac{1}{5} = \frac{11}{60}$

Multiply to obtain

$\frac{1}{2} x - \frac{3}{20} = \frac{11}{60}$

$\frac{1}{2} x = \frac{11}{60} + \frac{3}{20}$

$\frac{1}{2} x = \frac{1}{3}$

Multiply both sides by 2.

$2 \times \frac{1}{2} x =2 \times \frac{1}{3}$

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

The solution is

$( \frac{2}{3} , \frac{1}{5} )$

5 0

3 years ago

Read 2 more answers

lys-0071 [83]

Answer:

<2, <5, <4, <7

Step-by-step explanation:

Angles are Supplementary when their sum is 180 degrees.

so angle 1's supplements are <2, <5, <4, <7

4 0

4 years ago