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Rom4ik [11]
3 years ago
9

Solve x/42=3/7 using two different strategies.

Mathematics
1 answer:
just olya [345]3 years ago
6 0
You can solve this type of question two ways:

First cross multiply:
 <u>x  </u>  =     <span><u>3</u>
</span>42          7

(42)(3) = (7)(x)

This becomes :

126 = 7x

To solve for x divide both sides by 7 and you get x = 18

The other way to solve it is to think, what do I need to do to get x all by itself?

Since it's being divided by 42, you need to multiply each side of the equation by 42.

 42 *   <u>x</u>    =     <span><u>3</u>     * 42
</span>         42          7

This leaves you with x = (42*3)/2
This simplifies to x = 18
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777dan777 [17]

Answer:

x = 5/2

Step-by-step explanation:

(4^3x)/(2^4x) = 32

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5 0
2 years ago
4 A game is being watched by 60 adults and some
Vladimir79 [104]

Answer:

20 children.

Step-by-step explanation:

We can solve this using an equation or simple mental math:

The equation: x=children x+20=adults

x + (x+20) = 60

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2x = 40

x = 20

Mental Math: 40 plus 20 is 60 and 40 is 20 more than 20 so there are 40 adults and 20 children.

5 0
2 years ago
Height of the top of your head as you bounce on a pogo stick
ValentinkaMS [17]
        y
10    I   n     n     n
7.5   I  /  \   /  \  /  
 5     I/     U    U
 2.5  I_________x
        0  1  2  3  4    

The "n" and "U" should be drawn as curved lines (I'm drawing using the keys available to me but if this were hand-drawn the graph would be more ~ -curvy/wavy looking)

The Y-axis "Height in Feet": shows the height of their head from the ground in feet as they bounce
The X-axis "Length of Passing Time in Seconds": shows the seconds as they pass while jumping on the pogo stick
The assumption being made: The head isn't starting from 0 feet off the ground so we began the line near the 5-foot mark
Remember to label your x and y axises 

6 0
4 years ago
What number replaces the ∆? 4 = 4 6 + 4 = ∆ + 4
tatiyna

Answer:Triangle is 6. Question wasn’t very clean so I hope this helps

Step-by-step explanation:

4=4

6+4= ∆+4

Subtract 4 from each side

6=∆

3 0
4 years ago
Jackie wants to buy a new CD player it cost $32.95 she has saved $26 and has a coupon for 30% off the price does Jackie have eno
arsen [322]
Yes Jackie would have enough money to buy a CD player. So you would have to do 32.95 times that by 30% (.3) and would get 9.885 which you would round that to 9.89 dollars.
5 0
3 years ago
Read 2 more answers
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