Help needed please.........

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Answer 1

Answer: this is slope!!is it true???????

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Find the value of aBc
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Answer:

∠ ABC = 75°

Step-by-step explanation:

using the sine ratio in right Δ ABD

sin ABD = $(opposite)/(hypotenuse)$ = $(AD)/(AB)$ = $(4)/(8)$ = $(1)/(2)$ , then

∠ ABD = $sin^(-1)$ ( $(1)/(2)$ ) = 30°

Using the sine ratio in right Δ CBD

sin CBD = $(opposite)/(hypotenuse)$ = $(CD)/(BC)$ = $(3)/(3√(2) )$ = $(1)/(√(2) )$ , then

∠ CBD = $sin^(-1)$ ( $(1)/(√(2) )$ ) = 45°

Then

∠ ABC = ∠ABD + ∠ CBD = 30° + 45° = 75°

Triangle ABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C? A. 9/41 B. 40/9 C. 40/41 D. 9/40

Answers

The answer is letter C which is 40/41. If you draw a triangle the sides found in the cos C is BC which is equal to 40 and the CA which is equal to 41 or the 40/41. It can not be the AB since it is in the opposite side of the cos C.

It's a rectangular triangle because:

9² + 40² = 41²
81 + 1600 = 1681
1681 = 1681

Answer: C. cos∡C = 40/41

An electrician has a spool of wire that is 200 m long. she needs four pieces of wire measuring 42.3 m, 37.8 m, 55.6 m, and 35.7 m. about how much wire will be left on the spool after she finishes her job? give your answer with the appropriate precision.

Answers

She needs exactly 42.3m + 37.8m + 55.6m + 35.7m = 171.4m for accomplishing her job, so there will be 28.6 m (200m-171.4m) of wire after she finished her work.

Find the pattern and use it to list the nth term in the sequence. 1, 1/32,1/243,1/1024,1/3125

Answers

$1;\ (1)/(32);\ (1)/(243);\ (1)/(1024);\ (1)/(3125)\n\n1=(1)/(1^5)\n\n(1)/(32)=(1)/(2^5)\n\n(1)/(243)=(1)/(3^5)\n\n(1)/(1024)=(1)/(4^5)\n\n(1)/(3125)=(1)/(5^5)\n\vdots\n\na_n=(1)/(n^5)\ where\ n\in\mathbb{N^+}$

The scale on a map is 1/4 in : 18 mi. The state capital is 252 miles from the border. How far is the state capital from the border on the map?

Answers

Hey there, x:252 miles, 1/4:18=x:52, from there we cross mutliply 18*x=1/4*252=18x=63, x=63/18=7/12=3.5. So, the anwer is 3.5 inches.

Final answer:

Using the given scale ratio on the map and setting up a proportion with the real distance to the capital, then solving, we get that the state capital is represented as being 3.5 inches from the border on this map.

Explanation:

The subject of this question is applied mathematics, specifically ratios. The scale on the map is given as 1/4 in : 18 mi. This means that for every 1/4 inch on the map, it represents 18 miles in reality. To figure out how far the capital is from the border on the map, you'll implement this scale ratio.

First, you make a fraction with the scale, with the real distance (18 miles) on top and the map distance (1/4 inch) on the bottom. Then, you set up a proportion with this fraction equal to another fraction consisting of the real distance to the capital on top (252 miles) and an unknown distance on the map at the bottom, which we can represent as x.

The fraction then looks like this: 18/0.25 = 252/x. Solving for x gives you x = (0.25*252)/18 = 3.5. Therefore, the state capital is represented as being 3.5 inches from the border on this map.

Learn more about Map Scale here:

brainly.com/question/24486949

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How to find the volume of a rectangular prism

Answers

To find the volume of a rectangle prism, you will need to use the formula V= lenght * width * height. Make sure you state your answer in cubic units.
For example you have a rectangle prism with a lenght of 15m, width 8m, and a hieght of 12m.
V = l * w * h
V = 15 * 8 * 12
V= 120 * 12
V= 1,440
V= 1,440m^3

I hope this help.

Answer:

L x W x H

Step-by-step explanation:

L=Length

W=Width

H=Height

You find your L, W, and H. Multiply your L, W, and H.

Example:

L=Length

W=Width

H=Height

L=7

W=2

H=4

7 x 2 x 4

7 x 2 = 14

14 x 4 = 56

Rearranging to check my work:

7 x 4 x 2

7 x 4 = 28

28 x 2 = 56

I was right.

Hope this answers your question.

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