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vova2212 [387]
3 years ago
9

Question Help

Mathematics
1 answer:
Talja [164]3 years ago
8 0
Length:12 cm
Width: 7 cm

My work is shown in the picture. I hope this helps!

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Can any of you math wiz help me I am having trouble.
Aleksandr-060686 [28]

Answer:

1 - True

2 - False

3 - False

4 - True

Step-by-step explanation:

N/A

5 0
2 years ago
Read 2 more answers
What is the area, in square inches, of the isosceles trapezoid below?
Komok [63]
A = 73.84

Explanation-

14.2 - 6.4 = 7.8 (to get the length of the base without the top part)

7.8 • 5.2 = 40.56 (to find the area outside of our subtracted square that has the top part)

6.4 • 5.2 = 33.28 (to find the area of the inner square)

40.56 + 33.28 = 73.84 (adding together both parts to find the total area)

A = 73.84

7 0
3 years ago
For positive acute angles A and B, it is known that tan A = 35/12 and sin B = 20/29. Find the value of sin(A - B ) in the simple
almond37 [142]

Answer:

\displaystyle \sin(A-B)=\frac{495}{1073}

Step-by-step explanation:

We are given that:

\displaystyle \tan(A)=\frac{35}{12}\text{ and } \sin(B)=\frac{20}{29}

Where both A and B are positive acute angles.

And we want to find he value of sin(A-B).

Using the first ratio, we can conclude that the opposite side is 35 and the adjacent side is 12.

Then by the Pythagorean Theorem, the hypotenuse is:

h = \sqrt{35^2 + 12^2} =37

Using the second ratio, we can likewise conclude that the opposite side is 20 and the hypotenuse is 29.

Then by the Pythagorean Theorem, the adjacent is:

a=\sqrt{29^2-20^2}=21

Therefore, we can conclude that:

So, for A, the adjacent is 12, opposite is 35, and the hypotenuse is 37.

For B, the adjacent is 21, opposite is 20, and the hypotenuse is 29.

We can rewrite sin(A-B) as:

\sin(A-B)=\sin(A)\cos(B)-\cos(A)\sin(B)

Using the above conclusions, this yields: (Note that since A and B are positive acute angles, all resulting ratios will be positive.)

\displaystyle \sin(A-B)=\Big(\frac{35}{37}\Big)\Big(\frac{21}{29}\Big)-\Big(\frac{12}{37}\Big)\Big(\frac{20}{29}\Big)

Evaluate:

\displaystyle \sin(A-B)=\frac{735-240}{1073}=\frac{495}{1073}

6 0
3 years ago
Can someone help me out my grade are bad
ArbitrLikvidat [17]

Answer:

i think you plot point -13

Step-by-step explanation:

let me know if this is incorrect

4 0
3 years ago
What is -7 plus 7 equal too
nikklg [1K]

Answer:

The answer is 0

Step-by-step explanation:

Have a nice day

8 0
3 years ago
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