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Doss [256]
3 years ago
5

A woman is twice as old as her daughter. Twenty years ago, she was four times as old as he daughter. How old are they now? (i do

n’t get this one cuz it’s subtracting instead of adding and it made me confuzzled)
Mathematics
1 answer:
AysviL [449]3 years ago
4 0
So for this, you might want to set up some equations.

The mom's variable is m and the daughter's is d.  

So now is it m=2d

And twenty years ago it was m-20=4(d-20)  which is the same as m-20=4d-80.

Simplify so it is m=4d-60. Now, plug it in as m in the first equation. 

4d-60=2d           2d=60        d=30  

Now, we know that the mom must be 60 and the daughter 30 years old.
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Identify the exponent in the term –3x 2 . A. 3 B. x C. 2 D. minus sign (–)
leva [86]

Answer:

Correct option is:

C. 2

Step-by-step explanation:

We have to find the exponent in the term -3x²

An exponent refers to the number of times a number is multiplied by itself.

Here, x is multiplied to itself 2 times

i.e. x\times x=x^2

Hence, exponent in the term -3x² is:

2

So, the correct option is:

C. 2

5 0
3 years ago
The product of x and y is less than or equal to 4
Trava [24]
Product means multiplication. So the equation would be xy ≤ 4.
3 0
3 years ago
How to found the volume
never [62]
The formula to find the volume is 1/2(l*w*h)
Height= 7.6
Width=9
Length=13
So, 1/2(7.6*9*13) and you will get the answer
7 0
3 years ago
A warehouse employs 22 workers on first shift and 14 workers on second shift. Eight workers are chosen at random to be interview
lara [203]
36 all together.
22 first
14 second
8 random chosen

A) all first shift:
One is pulled 22/36
Second is pulled 21/35
Third is pulled 20/34
Fourth 19/33
Fifth 18/32
Sixth 17/31
Seventh 16/30
Eighth 15/29

Multiply all those together
Probability of all first shift is 0.010567296996663
(That means it's not happening anytime soon lol)

B) one worker 14/36
Second 13/35
Third 12/34
Fourth 11/33
Fifth 10/32
Sixth 9/31
Seventh 8/30
Eighth 7/29

Multiply all those together
Probability of all second shift is 0.000099238805645
(That means it's likely to see 100x more picks of all first shift workers before you see this once.. lol)

C) 22/36
21/35
20/34
19/33
18/32
17/31

Multiply..
Probability.. 0.038306451612903


D) 14/36
13/35
12/34
11/33

X... p=0.016993464052288


Probably not correct, haven't done probability in years.
8 0
3 years ago
I want to visit a friend that lives 200 miles away. Gas is $4 a gallon. My car gets 50 miles every 2 gallons of gas. How can I s
Pavel [41]
If you are trying to figure out how much it will cost:
8 x 4 = 32 
Cost of gas = $32 
3 0
3 years ago
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