4 years ago

What is Sin (A-B) if Sin A =4/5 in the second quadrant and cos B = 3/5 in the first quadrant

Mathematics

1 answer:

olya-2409 [2.1K]4 years ago

6 0

Answer:

24/25

Step-by-step explanation:

using the formula sin(a-b)=sin(a)*cos(b)-sin(b)*cos(a). The details are in the attached picture.

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Which graph represents the solution set of the compound inequality -4≤3x-1 and 2x+4≤18?

Mkey [24]

we have

$-4\leq 3x-1$ ----> inequality A

$-4\leq 3x-1 \\-4+1 \leq 3x\\-3 \leq 3x\\-1\leq x\\ x\geq-1$

The solution of the inequality A is the interval ------> [-1,∞)

$2x+4\leq 18$ -------> inequality B

$2x \leq 18-4$

$x \leq 14/2$

$x \leq 7$

The solution of the inequality B is the interval ------> (-∞,7]

The solution of the compound inequality is

[-1,∞) ∩ (-∞,7]=[-1,7]

therefore

the answer in the attached figure

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Answer:

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Jackson picked apples for his family. He picked a total of 6 1/2 pounds. He took 2 3/4 pounds to his aunt and 1 5/8 to his mothe

mr_godi [17]

I believe his grandmother would get 2 1/5 of the apples.

Hope this helps

5 0

3 years ago

Find the measure of angle 1.

Likurg_2 [28]

Answer:

108 degrees

Step-by-step explanation:

x + 63 = 8x (vertically opposite angles)

7x = 63

x = 9

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8(9) + angle1 = 180

angle1 = 180 - 8(9) = 108

8 0

3 years ago

Leila has $420 in her bank account. Every month, she deposits another $40 into her account. At this rate, in how many more month

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Answer:

Step-by-step explanation:

Equation y=40x+420

plur in 900 to the y

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