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scoundrel [369]
3 years ago
15

Find the value of a.

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
4 0

Answer:

60°

Step-by-step explanation:

60+60+(60x2)+(60x2)=360

First in the parenthesis. 60x2=120 120+120=240

Then 60+60=120

240+120=360

babunello [35]3 years ago
3 0

Answer:

a = 60°

Step-by-step explanation:

Total angle in a kite is 360

a + 2a + a + 2a = 360

6a = 360

a = 60

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F(x) = 5x^2 + 9x – 4<br> g(x) = – 8x^2 – 3x – 4<br> Find (f + g)(x).
svp [43]

Answer:

(f + g)(x) = – 3x^2 + 5x - 8

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

= 5x^2 + 9x – 4 + (– 8x^2 – 3x – 4)

= 5x^2 + 9x – 4 – 8x^2 – 3x – 4

Combine

= – 3x^2 + 5x - 8

3 0
3 years ago
4 divide by8/9 - 1/2
Sever21 [200]

I think 4 divided by 8/9 - 1/2 = 4

6 0
3 years ago
Help please asap i<br> show step by step !
pychu [463]

Answer:

a = 4\sqrt{3}

b= 4

Step-by-step explanation:

It's a 30-60-90 triangle based on the given picture. A right triangle too

Use sine, cosine, and tangent to solve for the side.

To find b, you can use sin(30) = b/8 because sin(angle) = opposite/hypotenuse.

OR you can use the rule for 30-60-90 triangle, which is x for short leg, 2x for hypotenuse, and x\sqrt{3} for long leg

So either way, b = 4

To find a, you can use cos(30) = a/8 because cos(angle) = adjacent/hypotenuse.

OR you can use the same rule, 30-60-90 triangle to save time

a will end up = 4\sqrt{3}

6 0
3 years ago
5( x-3 ) + 2x =41<br> What is x?
Valentin [98]

Answer:

8

Step-by-step explanation:

5 ( x - 3 ) + 2x = 41

5x - 15 + 2x = 41

5x + 2x - 15 = 41

7x - 15 = 41

7x = 41 + 15

7x = 56

x = 56 / 7

x = 8

8 0
3 years ago
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You finish washing 3/4 of your windows in an hour and a half. At that rate, how much longer will it take you to finish washing a
Marysya12 [62]
It takes you 90 minutes to wash 3/4 of your windows

Multiply both numbers by 4.

It takes you 360 minutes to wash 3 of your windows.

Divide both numbers by 3.

It takes you 120 minutes to wash 1 of your windows.

120 minutes = 2 hours.

It will take you 2 hours to wash all the windows.
5 0
3 years ago
Read 2 more answers
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