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eimsori [14]
3 years ago
14

The dimensions of a 7-cm by 2-cm rectangle are multiplied by 3. How is the area affected?

Mathematics
1 answer:
Soloha48 [4]3 years ago
3 0

Answer:

Original rectangle:  Since the area of a rectangle is the length * width, the area of this rectangle is 7 * 2 = 14 square cm.

New rectangle: The new dimensions of this are 7*3 = 21 cm by 2*3 = 6 cm.  To find the area, we multiply these two together.  21*6 = 126 square cm.

126 is 9 times greater than 14, so the area will be multiplied by 9.

Step-by-step explanation:

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T= 4p-18-pr

Step-by-step explanation:

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john scored 15 points his first game. In his last game he scored 20 points. What was his percent of increase?
iVinArrow [24]

\huge\mathrm{ \it{Answer࿐}}

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3 years ago
What is the area of a circle with radius of 3 inches? Use pie =3.14 A .18.84 square roots B .28.26 square roots C .9.42 square r
tatiyna

Answer:

B. 28.26

Step-by-step explanation:

First you have to find the circumference:

R²= 3²=9

Then you multiply your circumference by 3.14 to get you answer:

9·3.14=28.26

3 0
3 years ago
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = 4x2 – 8x – 3.
Schach [20]
Axis of symmerty from form
ax²+bx+c is -b/2a
the axis of symetry is the x value of the vertex so just put the axis of symetry for x an evaluate


4x²-8x-3
-b/2a=-(-8)/(2*4)=8/8=1

input for x
4(1)²-8(1)-3=4-8-3=-7

(1,-7) is vertex

A is answer
5 0
3 years ago
Read 2 more answers
5. For f(x) = 5x + 1, find 4). (1 pnt)<br> -19<br> 1<br> -21<br> 21
jarptica [38.1K]

Answer:

f(x) = 5x – 1

to find the inverse equate f(x) to y

That will be

f(x) = y

>>>>

Interchange the terms >>>

x = 5y - 1

then make y the subject

then we have

5y = x + 1

then if you divide both sides by 5

y = x+1/5

therefore f^-1(x)= x + 1/5

hope this helps you

(Brainliest?)

Step-by-step explanation:

3 0
3 years ago
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