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Vlad1618 [11]
3 years ago
13

Help me , I will mark first answer brainliest

Mathematics
2 answers:
lana [24]3 years ago
8 0

Answer:

x=6;    ∠b=68°

Step-by-step explanation:

8x+74+2x+56=190

10x+130=190

10x=60

x=6

2x+56

12+56

68

artcher [175]3 years ago
5 0
X=6 I think it’s the correct answer
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Use the cosine ratio or the inverse cosine to solve for x. Round your answer to the nearest tenth.
maria [59]

Answer:

x ≈ 12.6 m

Step-by-step explanation:

By using cosine ratio in the given right triangle RTS,

cos(S)° = \frac{\text{Adjacent side}}{\text{Hypotenuse}}

cos(33)° = \frac{\text{ST}}{\text{SR}}

cos(33)° = \frac{x}{15}

x = 15.cos(33)°

x = 12.58

x ≈ 12.6 m

Therefore, measure of side ST = 12.6 m is the answer.

7 0
3 years ago
What should be the three sides of a triangle to make it right triangle?
drek231 [11]
Sum of square of two sides must be equal to the square of third side.
5 0
3 years ago
Paul has $30,000 to invest. His intent is to earn 15% interest on his investment. He can invest part of his money at 8% interest
jeka94

Answer:

Amount invested at 8% is $9000 and amount invested at 18% is $21000.

Step-by-step explanation:

Let amount invested at 8% be x.

Let amount invested at 18% be y.

We get the 1st equation as:

x+y=30000       ........(1)

We get the second equation as:

0.08x+0.18(y)=0.15\times30000

=> 0.08x+0.18y=4500

or getting rid of the decimal by multiplying by 100 on both sides.

8x+18y=450000          ........(2)

Multiplying (1) by 8 and subtracting from (2) we get

10y=210000  

So, y = 21000

And x+21000=30000

x = 30000-21000

So, x = 9000

Therefore, amount invested at 8% is $9000 and amount invested at 18% is $21000.

6 0
3 years ago
Select the correct answer.
garri49 [273]

Answer:

Step-by-step explanation:

C. 28

5 raised to 2nd power is 25 so 25+3=28

7 0
3 years ago
4. solve the equation,,,,,,,,
statuscvo [17]

Answer:

A. 0.76, -0.76

Step-by-step explanation:

4 0
3 years ago
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