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ikadub [295]
3 years ago
7

Help!!

Mathematics
1 answer:
saul85 [17]3 years ago
5 0

Answer:

40.47°, 49.53°

Step-by-step explanation:

Complementary angles add up to 90

7r + 5 + 8r + 9 = 90

15r + 14 = 90

15r = 76

r = 76/15

7r + 5 = 7(76/15) + 5 = 40 7/15

8r + 9 = 8(76/15) + 9 = 49 8/15

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5+ [x - {2y-(6x + y - 4) + 2x} - {x -(y - 2)}<br>solve it.<br>​
yulyashka [42]

Answer:

2(2x-3) or 4x-6 if you want to sound smarter

Step-by-step explanation:

I did it

3 0
3 years ago
Which expression is equivalent to 9 p minus 3 p + 2?
Snezhnost [94]

Answer:

Didn't know how far I was needed to go, but I hope something there helps you.

Step-by-step explanation:

9p - 3p +2 = 0

6p +2 = 0

6p = -2

p = -2/6

p = -1/3

5 0
3 years ago
Read 2 more answers
Which of the following are solutions to this equation 3n+4=24-n a) n=1 b) n=3 c) n=5 d) n=7​
g100num [7]

Answer:

The correct option is c) n=5.

Therefore the solution to

3n+4=24-n

is

n=5

Step-by-step explanation:

Given:

3n+4=24-n

To Find;

n = ?

Solution:

3n+4=24-n      ........Given

Add + n to both the side

3n+4+ n=24-n+n\\4n+4=24

Now Subtract 4 on both the side

4n+4-4=24-4\\4n=20

Dividing by 4 on both side

\dfrac{4n}{4}=\dfrac{20}{4}\\\\n=5

Therefore the solution to

3n+4=24-n

is

n=5

4 0
3 years ago
Work out the area of the triangle.<br> ?m2
zhannawk [14.2K]

The area of the triangle is 557. 7cm²

<h3>Area of a triangle</h3>

In order to determine the area of a triangle, we have to know the size of the base and the size of the height

The formula for finding the area of a triangle is given as = half the base multiplied by the height

In mathematical form, it is written as;

Area = 1/ 2 × base × height

From the figure given, we have their lengths to be'

base = 57. 2 m

height = 19. 5 m

Let's substitute the values

Area = 1/ 2 × 57. 2 × 19. 5

Area = 1/ 2 × 1115. 4

Find the ratio

Area = 557. 7 m²

The area of the triangle is 557. 7cm²

Hence, the area of the triangle is 557. 7cm²

Learn more about a triangle here:

brainly.com/question/1475130

#SPJ1

6 0
2 years ago
243^0.2x=81^x+5<br><br>Could you please help me with the steps to this problem?​
Natasha_Volkova [10]

Answer:

-20/3

Step-by-step explanation:

First simplify the left side of the equation

243^(1/5x)= (243^1/5)^x

                =(\sqrt[5]{243} )^x

                = 3^x

Now that the left side is simplified,  let's move to the right side

81^(x+5)=( 3^{4})^(x+5) simplify 81 to base 3^4

             =x^{4(x+5) use the product of powers property to multiply the exponents together

             =x^{4x+20

With both sides simplified, let's rewrite the equation, this time in simplified terms

3^{x}=3^{4x+20}            

x=4x+20    because both the bases are same, their exponential value must also be equal

-3x=20 solve the algebraic equation for x

  x=-\frac{20}{3}

3 0
3 years ago
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