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I am Lyosha [343]
3 years ago
5

Which of the following is true about the 1920s? Only two correct answers

Mathematics
1 answer:
lesya [120]3 years ago
7 0

Answer: A. Women began to work outside the home

Step-by-step explanation:

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What is the name of a survey that includes all members of a population being studied
Alexxandr [17]
That would be a census!
5 0
3 years ago
Math lottssssss offf points
yan [13]
Constant of Proportionality = d/t = 90/2 = 45 mph

In short, Constant of Proportionality would be: 45 miles per hour.

Here, d/t = 45
d = 45t

In short, Your Equation would be: d= 45t

Hope this helps!


5 0
3 years ago
Divide 42 in a ratio of 1:2:3?
Cloud [144]
Ratio 1:2:3 means we have x, 2x and 3x as the three parts

x+2x+3x = 42
6x = 42
6x/6 = 42/6
x = 7

Since x = 7, this means 2x = 2*7 = 14 and 3x = 3*7 = 21

Dividing 42 into the ratio of 1:2:3 means we have 7:14:21 as the answer

If we divide all three parts of 7:14:21 by the GCF 7, we reduce it down to 1:2:3

As a check, 
7+14+21 = 21+21 = 42
so it works out
6 0
3 years ago
Find the exact value of the trigonometric expression given that sin u = − 8 17 and cos v = − 24 25 . (Both u and v are in Quadra
Rashid [163]

Answer: sin u = -5/13 and cos v = -15/17

Step-by-step explanation:

The nice thing about trig, a little information goes a long way. That’s because there is a lot of geometry and structure in the subject. If I have sin u = opp/hyp, then I know opp is the opposite side from u, and the hypotenuse is hyp, and the adjacent side must fit the Pythagorean equation opp^2 + adj^2 = hyp^2.

So for u: (-5)^2 + adj^2 = 13^2, so with what you gave us (Quad 3),

==> adj of u = -12 therefore cos u = -12/13

Same argument for v: adj = -15,

opp^2 + (-15)^2 = 17^2 ==> opp = -8 therefore sin v = -8/17

The cosine rule for cos (u + v) = (cos u)(cos v) - (sin u)(sin v) and now we substitute: cos (u + v) = (-12/13)(-15/17) - (-5/13)(-8/17)

I am too lazy to do the remaining arithmetic, but I think we have created a way to approach all of the similar problems.

3 0
2 years ago
Will give award to whoever answers! 
Blizzard [7]
4x - 3 = 9

4x = 9 + 3

4x = 12

x = 3

hope that helps, God bless!
3 0
3 years ago
Read 2 more answers
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