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3 years ago

I need to solve for x

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

Upper triangle: 12x +7x + angle of vertex = 180°
Lower triangle: 7x+6x+1 + angle vertex =180°
Notice than the angles at the vertex are equal

Then: 12x+7x+angle of vertex =7x+6x+1+angle of vertex
19x =13x+1
6x=1 & x=1/6

aalyn [17]3 years ago

6 0

6x+1 = 12x because the Z angles are the same

Solve this and you get:

1 = 12x - 6x => x = 1/6

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$1500 at 9% for 2 years

kotykmax [81]

Answer:$270

Step-by-step explanation:

I=PRT

Interest=principal times rate times time

Principal=1500

Rate=9%=0.09

Time=2

I=1500 times 0.09 times 2

I=1500 times 0.18

I=270

Interest=270

Total is 1500+270=1770 total paid

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3 years ago

Find the area of the following figure. get brainliest if correct<3

Alexus [3.1K]

Answer:

312

Step-by-step explanation:

because when you add the triangles and rectangles together you get 312

7 0

2 years ago

Read 2 more answers

Pls help:Find all the missing elements:

Yuliya22 [10]

Answer:

Step-by-step explanation:

In order to find B we must first angle C

To find angle C we use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |c| }{ \sin(C) }$

From the question

a = 15

A = 70°

c = 14

So we have

$\frac{15}{ \sin(70) } = \frac{14}{ \sin(C) }$

$\sin(C) = \frac{14 \sin(7 0 ) }{15}$

$C = \sin^{ - 1} ( \frac{14 \sin(70) }{15} )$

C = 61.288

<h3>C = 61.3° to the nearest tenth</h3>

Since we've found C we can use it to find B.

Angles in a triangle add up to 180°

To find B add A and C and subtract it from 180°

That's

A + B + C = 180

B = 180 - A - C

B = 180 - 70 - 61.3

<h3>B = 48.7° to the nearest tenth</h3>

To find b we can use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |a| }{ \sin(B) }$

$\frac{15}{ \sin(70) } = \frac{ |b| }{ \sin(48.7) }$

$|b| = \frac{15 \sin(48.7) }{ \sin(70) }$

b = 11.9921

<h3>b = 12.0 to the nearest tenth</h3>

Hope this helps you

6 0

3 years ago

An elevador starts on the 100th floor of a building it descends 4 floor every 10 seconds At what floor will the elevator be 60 s

Colt1911 [192]

The elevator will be on the 76th floor in 60 seconds.

8 0

4 years ago

Read 2 more answers

If f(x) = 5x^2 - 7x + 9 and g(x) = 3x^2 - 6x -4, what is (f-g)(x)?

Anastasy [175]

Answer:

(f-g)(x) = 2x^2-x +5

Step-by-step explanation:

i think this is right the question is a little confusing

7 0

3 years ago