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cluponka [151]
3 years ago
9

What is the answer to 35=-7[z+8]

Mathematics
2 answers:
dedylja [7]3 years ago
5 0
<span>z=−13</span> would be your answer
vodomira [7]3 years ago
3 0
I guess you need to solve for z:

-7(z+8) = 35
First, let's develop -7(z+8):
-7(z+8) = -7z -56

So -7(z+8) = 35
-7z - 56 = 35

Then we add 56 in both sides so we can get the variable on a side and the numbers on another:
-7z - 56 + 56 = 35 + 56
-7z = 91

Then divide each side by -7 so we can get the variable z alone on a side and its value on another side:
-7z = 91
(-7z)/-7 = 91/-7
z = -13

You can re-check your answer (very important):
-7(z+8) = -7(-13+8) = -7 * -5 = 35 (Multiplying negative numbers gives a positive number).
The answer has been approved.

Hope this Helps! :)
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Find the approximate area of the shaded region below, consisting of a right triangle with a circle cut out of it. Use 3.14 as an
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Answer:

B. 1,486 metres

Step-by-step explanation:

Find the area of the triangle.

60 x 60 = 3600

3600 ÷ 2 = 1800

Area of triangle = 1800 metres

Area of unshaded circle is approximately 314 metres square using pi

1800 - 314 = 1486

1486 metres square is the approximate area of the shaded region.

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3 years ago
if the ratio of the volume of two cubes is 1 : 8 , then find the ratio of the total surface area of the two cubes​
vivado [14]

Answer:

V = L^3      where v is volume and L the length of one side

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A = 6 * V^2/3      area of cube expressed in V

A2 / A1 = (V2 / V1)^2/3       6 cancels

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3 0
3 years ago
Which expressions are solutions to the equation 3/4 x = 15?
algol [13]
I think so C is correct
Because is true.
7 0
3 years ago
In a certain neighborhood, there's a sagging power line between two utility poles. The utility poles are 50 feet tall and 120 fe
e-lub [12.9K]
<h3>Answer:  33.75 feet</h3>

In fraction form, this value is equal to 135/4

33.75 ft is equivalent to 33 ft, 9 inches.

===============================================

Explanation:

Refer to the diagram below.

The key point to start with is point H, which is the vertex of the parabola.

Recall that vertex form is

y = a(x-h)^2 + k

What we'll do is plug in the vertex (h,k) = (60,30) which is the location of point H. We'll also plug in (0,45) which is the y intercept, aka the location of point C.

So,

y = a(x-h)^2 + k

y = a(x-60)^2 + 30 .... plug in vertex

45 = a(0-60)^2 + 30 .... plug in y intercept coordinates

45 = a(-60)^2 + 30

45 = a(3600) + 30

45 = 3600a + 30

45-30 = 3600a

3600a = 15

a = 15/3600

a = 1/240

This then means:

y = a(x-h)^2 + k

y = (1/240)(x-60)^2 + 30

This is the equation of our parabola. Plug in x = 30 to determine the height of point K

y = (1/240)(x-60)^2 + 30

y = (1/240)(30-60)^2 + 30

y = (1/240)(-30)^2 + 30

y = (1/240)(900) + 30

y = 15/4 + 30

y = 15/4 + 120/4

y = 135/4

y = 33.75

Therefore, the height of the power line, when it is 30 feet away from one of the poles, is 33.75 feet. This is the y coordinate of point K.

Side note: 33.75 ft = 33 ft + 0.75 ft = 33 ft + 12*0.75 in = 33 ft + 9 inches

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2 years ago
Problem: -4(6-y)+4=-4
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Step 2 is wrong and i don't know the other question
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