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mojhsa [17]
4 years ago
10

Translate the phrase into an algebraic expression. The product of 7 and x

Mathematics
1 answer:
Luda [366]4 years ago
3 0
It’ll be 7*x or just 7x
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~~~30 POINTS~~~<br> Please assist me on this math question!
MAXImum [283]
A)
Let's pick point (4,4) and point (2,2). If you divide the new point by the old point you will see that both the x-value and the y-value were multiplied by 2 to gt the new x-value and new y- value. So the scale factor is 2.

The perimeter of the first square can be found by subtracting the x-values from two points to get the length of one side and then multiply the result by 4 to get the perimeter of the whole square.
2-(-2)=4
The length of one side of the first square is 4. (I just subtracted the x-values.)
4 times 4 = 16.
The perimeter of the first square is 16.

Similarly, 4-(-4)=8 and 8 times 4 = 32.
The perimeter of the second square is 32.

b)
Let's pick point (6,6) and point (3,3). If you divide the new point by the old point you will see that both the x-value and the y-value were multiplied by 2 to gt the new x-value and new y- value. So the scale factor is 2.

The perimeter of the first square can be found by subtracting the x-values from two points to get the length of one side and then multiply the result by 4 to get the perimeter of the whole square.
3-(-3)=6
6 times 4 = 24.
The perimeter of the first square is 24.

Similarly, 6-(-6)=12 and 12 times 4 =48.
The perimeter of the second square is 48.

c)
If a figure is dilated to a scale factor of 2 then the perimeter of the figure will also be doubled.
3 0
3 years ago
Two cyclists, 80 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other. If they
vivado [14]

The speed of the faster cyclist will be 30 miles/hour.

<em><u>Explanation</u></em>

One cyclist is 3 times as fast as the other.

Lets assume that the speed of the slower cyclist is  x miles/hour.

So, the <u>speed of the faster cyclist</u> will be:  3x miles/hour.

They start riding toward each other at the same time and meet 2 hours later.

We know that,  Distance= speed*time

So, the <u>distance traveled by slower cyclist</u> in 2 hours = (x*2)miles= 2x miles and the <u>distance traveled by faster cyclist</u> =(3x*2) miles = 6x miles.

Given that, they were 80 miles apart at the starting. So, the equation will be.....

2x+6x=80\\ \\ 8x=80\\ \\ x=10

So, the speed of the faster cyclist will be: (3×10)= 30 miles/hour.

5 0
4 years ago
Read 2 more answers
How must the graph y=3x2+1 be transformed to obtain the graph of y=3x2−1?
vladimir1956 [14]
Bbbbb


Explanation: I’m takin the test to
8 0
3 years ago
I neeed helppppp nowwwwww
weeeeeb [17]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The perimeter of the rectangle below is 130 units. Find the value of z
aev [14]

Answer:

9 =z

Step-by-step explanation:

The perimeter of a rectangle is

P = 2(l+w) where l is the length and w is the width

P = 2(3z+2+ 4z)

Combine like terms

P = 2(7z+2)

Substitute in the perimeter

130 = 2( 7z+2)

Divide each side by 2

130/2 = 2/2 ( 7z+2)

65 = 7z+2

Subtract 2 from each side

65-2 = 7z+2-2

63 = 7z

Divide by 7

63/7 = 7z/7

9 =z

8 0
3 years ago
Read 2 more answers
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