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Pani-rosa [81]
2 years ago
15

WILL GIVE BRAINLST HAVE AN AMAZING DAY :)

Mathematics
2 answers:
Leokris [45]2 years ago
8 0

Answer:

9.\:\:x = 3. 5

10. y = 8x + 12

Step-by-step explanation:

9.

12x = 4(x + 2) + 20

12x = 4x + 8 + 20

12x - 4x = 28

8x = 28

x = 28/8

x = 7/2

x = 3.5

10.

Slope (m) = 8

Line is crossing y-axis at (0, 12)

y-intercept (b) = 12

Equation of line in slope-intercept form is given as:

y = mx + b

Plugging the values of m and b in the above equation, we find:

y = 8x + 12

KatRina [158]2 years ago
5 0

Answer:

x=3.5

Step-by-step explanation:

12x=4(x+2)+20

multiply the parentheses by 4

12x = 4x+8 +20

add 20 to 8

12x = 4x +28

subtract 4x on both sides

8x = 28

divide both sides by 8

x=3.5

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Liula [17]

Answer:

1) Divide the numerator by the denominator.

2) Write down the whole number result.

3) Use the remainder as the new numerator over the denominator. This is the fraction part of the mixed number.

Step-by-step explanation:

not sure of this will help... but hope it does!

3 0
2 years ago
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A bridge is 3911.1 meters long. Which of the following best describes the length of the bridge in kilometers?
Angelina_Jolie [31]

Answer:

3.9111 km

Explanation:

The length in kilometers is equal to the meters divided by 1,000. So, if you divide 3911.1 by 1,000 that equals 3.911. You move the decimal point to the left 3 times based on the number of zeros.

3 0
2 years ago
What is the surface area of a triangular prism?​
Llana [10]

Answer:

The general formula for the total surface area of a right prism is T. S. A. =ph+2B where p represents the perimeter of the base, h the height of the prism and B the area of the base.

Step-by-step explanation:

5 0
3 years ago
A pound of oranges cost $3 less than a pound of pears. Together, 8 pounds of oranges and 4 pounds of pears cost $30. How much wo
jek_recluse [69]

A pound of oranges cost x dollar => A pound of pears cost x+3 dollar

We have: 8x+4(x+3)=30 => 12x=30-12=18 =>x=1.5

5 pounds of pears cost: 5(x+3)=5(1.5+3)=5*4.5= 22.5 (dollar)

5 0
3 years ago
Find g^−1 (x) when g(x) = 3/5 x −9.<br><br>5/3x − 1/9<br>5/3 x + 9<br>−3/5 x+ 9<br>5/3 x + 15
Cerrena [4.2K]

Answer:

5/3 x + 15

Step-by-step explanation:

The inverse of a function is the reflection across the line y = x. As such, algebraically it is found by switching y and x in the equation and isolating to solve for y.

g(x) = 3/5 x - 9

x = 3/5 y - 9

x + 9 = 3/5 y

5(x+9) = 3y

(5x + 45)/3 = y

5/3x + 15 = y

8 0
3 years ago
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