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Wewaii [24]
3 years ago
12

3. Solve the equation for x: 3x - 4 = 7x + 8

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
8 0

Answer:

=−3

Step-by-step explanation:

liberstina [14]3 years ago
5 0

Answer:

B) x = -3

Step-by-step explanation:

3x - 4 = 7x + 8.

Subtract 7 from 3

3 - 7 = -4

-4x - 4 = 8

use additive inverses.

-4x - 4 + 4 = 8 + 4

8 + 4 = 12.

-4x ÷ -4 = 12 ÷ -4

x = -3.

Hope this helped.

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A rose garden is formed by joining a rectangle and a semicircle. The rectangle is 33ft long and 21ft wide. If the gardener wants
jeyben [28]

Answer:

The perimeter of the garden is 126.81 feet.                                      

Step-by-step explanation:

We are given the following in the question:

Dimensions of rectangle:

Length, l = 33 feet

Width, w = 21 feet

Dimension of semicircle:

Diameter of circle, d = 33 feet

r = \dfrac{d}{2} = \dfrac{33}{2} = 16.5

Perimeter of garden =

P =\text{(Length + 2(Width)) + Perimeter of semi circle}\\P =l + 2(w) + \pi(r)\\P = 33 + 2(21) + 3.14(16.5)\\P = 126.81

Thus, the perimeter of the garden is 126.81 feet.

3 0
3 years ago
Help im really struggling here I would really appreciate it
sweet [91]
The answer is B, 90 degrees counterclockwise rotation about the origin I hope this helps you out
8 0
3 years ago
What is the answer for $ 199 MP3 player 15% discount
Irina-Kira [14]
So discount means taken off
we find 15% of 199 and subtract from 199
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'of' means multiply
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discount so 199-29.85=169.15
answer is $169.15
8 0
3 years ago
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Answer:

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Step-by-step explanation:

I used the formula "Multiply the mass value by 16"

Hope this helps:)

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Step-by-step explanation:

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