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Alchen [17]
2 years ago
15

The area of a rectangle is 60 square inches.

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
7 0
X=7 because 7-3 = 4, 7+8= 15,15x4=60.
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Linda soent 3/4 of her saving on furniture and the rest on a TV. If the TV cost her $200, what were her orginal savings?
garri49 [273]
She would have spent $600 on the furniture, and $200 on the T.V.

Her original savings were $800.
8 0
3 years ago
Please help, performance task: trigonometric identities
AnnZ [28]

The solutions to 1 - cos(x) = 2 - 2sin²(x) from (-π, π) are (-π/3, 0.5) and (π/3, 0.5)

<h3>How to solve the trigonometric equations?</h3>

<u>Equation 1: 1 - cos(x) = 2 - 2sin²(x) from (-π, π)</u>

The equation can be split as follows:

y = 1 - cos(x)

y = 2 - 2sin²(x)

Next, we plot the graph of the above equations (see graph 1)

Under the domain interval (-π, π), the curves of the equations intersect at:

(-π/3, 0.5) and (π/3, 0.5)

Hence, the solutions to 1 - cos(x) = 2 - 2sin²(x) from (-π, π) are (-π/3, 0.5) and (π/3, 0.5)

<u>Equation 2: 4cos⁴(x) - 5cos²(x) + 1 = 0 from [0, 2π)</u>

The equation can be split as follows:

y = 4cos⁴(x) - 5cos²(x) + 1

y = o

Next, we plot the graph of the above equations (see graph 2)

Under the domain interval [0, 2π), the curves of the equations intersect at:

(π/3, 0), (2π/3, 0), (π, 0), (4π/3, 0) and (5π/3, 0)

Hence, the solutions to 4cos⁴(x) - 5cos²(x) + 1 = 0 from [0, 2π) are (π/3, 0), (2π/3, 0), (π, 0), (4π/3, 0) and (5π/3, 0)

Read more about trigonometry equations at:

brainly.com/question/8120556

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4 0
1 year ago
What is the total surface area of the solid?
Umnica [9.8K]
We’re going to use the formula for area of a rectangle, which is length x width. We are also going to use the formula for area of a triangle which is 1/2 x base x height.

Let’s start with the rectangle under the triangle ends of the roof. They are 11mm wide, 10mm high, and there are two of them.

11 x 10 x 2 = 220

Then the other sides that are 16 x 10. There are 2 of them.
16 x 10 x 2 = 320

Then the rectangular pieces of roof, 9.7 x 16, and there are 2 of them.

9.7 x 16 x 2 = 310.4

Lastly, the triangle pieces of roof. (1/2)(base)(height), but there are 2 of them
1/2 x 11 x 8 x 2 = 88

Add up all the parts:
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6 0
2 years ago
Read 2 more answers
PLEASE HELP ILL GIVE BRAINLIEST!!!! AND WORTH MORE THEN 10 POINTS
Tanzania [10]

Answer: 27 ft

Step-by-step explanation:

Given

the angle of elevation is \theta =4^{\circ}

Length of track is L=387\ ft

Vertical rise is given by

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4 0
3 years ago
If the team needs 3 beams and 6 channels will the grant cover the cost<br><br>(grant is 75.00)​
Nadusha1986 [10]

Answer:

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8 0
3 years ago
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