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Ann [662]
3 years ago
5

I will give brainlist please someone help!!!​

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

x = 6

Step-by-step explanation:

Alternate angles are congruent.

7x - 9 = 3x + 15               {Subtract 3x form both sides}

7x - 3x -9 = 15

      4x - 9=15            {Add 9 to both sides}

           4x = 15+9

           4x = 24

           x = 24/4

x = 6

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suppose you are standing on one bank of the river. A tree on the other side of the river is known to be 150ft tall. A line from
Eva8 [605]
You can use trigonometry and the tangent to get:
tan(11°)=150/x
so x=772 ft

3 0
3 years ago
Solve the following system of equations. Enter the y-coordinate of the solution. Round your answer to the nearest tenth. 5x+2y=7
Rashid [163]
5x + 2y = 7....multiply by -3
-2x + 6y = 9
----------------
-15x - 6y = -21 (result of multiplying by -3)
-2x + 6y = 9
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-17x = - 12
x = 12/17 or 0.7

5x + 2y = 7
5(12/17) + 2y = 7
60/17 + 2y = 7
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4 0
3 years ago
Read 2 more answers
19) Solve the inequality. 7x − 9 &gt; 2x + 6 A) x &gt; 3 B) x &gt; 3 5 C) x &gt; −3 D) x &gt; − 3 5
Marianna [84]

Answer:

B

Step-by-step explanation:

Given

7x - 9 > 2x + 6 ( subtract 2x from both sides )

5x - 9 > 6 ( add 9 to both sides )

5x > 15 ( divide both sides by 3 )

x > 3 → B

8 0
3 years ago
Read 2 more answers
Find two integers whose difference is -6. ( There are many!)
olga nikolaevna [1]

Step-by-step explanation:

There are infinitely many such integers.

x - y = -6            <em>add y to both sides</em>

x = -6 + y → x = y - 6

1. Choose any y value.

2. Substitute for the equation.

3. Calculate the value of x.

Examples:

for y = 0 → x = 0 - 6 = -6

check: -6 - 0 = -6

for y = 10 → x = 10 - 6 = 4

check: 4 - 10 = -6

for y = -9 → x = -9 - 6 = -15

check: -15 - (-9) = -15 + 9 = -6

5 0
3 years ago
) at what rate percent per annum will a sum of money double itself in 10 years ? (2 marks)
fredd [130]

Answer:

7.177%

Step-by-step explanation:

2  is double

2 =( 1 + i)^10      solve for i = 7.177%

8 0
2 years ago
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