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kogti [31]
3 years ago
12

A circle with a radius of One-half ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check a

ll that apply. The length of the new radius will be 4 feet. The length of the new radius will be 32 feet. The new circumference will be 8 times the original circumference. The new circumference will be 64 times the original circumference. The new area will be 8 times the original area. The new area will be 64 times the original area. The new circumference will be 8 pi feet. The new area will be 16 pi square feet.change if each side is increased by a factor of 10? A rectangle with length 6 centimeters and width 3 centimeters. The perimeter will be StartFraction 1 Over 10 EndFraction the original. The perimeter will be StartFraction 1 Over 100 EndFraction the original. The perimeter will be 10 times the original. The perimeter will be 100 times the original.
Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0

Answer:

The circumference of original circle is, The area of original circle is, The dilation by scale factor 8 means the radius of new circle is 8 times of the original circle. Therefore the radius of new circle is 4 ft and the statement A is true.

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I'm stuck on a MathsWatch question. I've started it but I need some help to finish it please. Thank you! It's out of 5 marks, so
luda_lava [24]


We have area of the rectangle:


fg=120


Area of the triangle:


\frac 1 2 f \times 3 = 135-120


Solve away:


f = \frac 2 3(15) = 10


g= \dfrac{120}{f}=12


Answer: f=10, g=12


Check: trapezoid area


A = \frac 1  2(12+15)10 = 5(27)=135 \quad\checkmark



6 0
3 years ago
Simplify the following expression: 8v + v
erica [24]

Answer:

9v

Step-by-step explanation:

You are just adding like numbers together. There is an imaginary 1 in front of the second v which makes it 9v

5 0
3 years ago
Read 2 more answers
Write the following expression
Rashid [163]

Answer:

2x^2 - 18x + 45

Step-by-step explanation:

Standard form is ax^2 + bx + c

Expand the (x-5)^2 = (x-5)(x-5) --

x^2 - 5x - 5x + 25

x^2 - 10x + 25

So we now have

2(x^2 - 10x + 25) + 2(x-5) + 5

From here, distribute the 2 to each term in x^2 - 10x + 25, and distribute the 2 to each term in x - 5.

2x^2 - 20x + 50 + 2x - 10 + 5

Combine like terms

2x^2 - 20x + 2x + 50 - 10 + 5

2x^2 - 18x + 40 + 5

2x^2 - 18x + 45

6 0
3 years ago
Pls help is it A. B. C. D.
Ivenika [448]

Answer:

C

Step-by-step explanation:

Hope I was able to help!! :)

7 0
3 years ago
One day, a person went to a horse racing area. Instead of counting the number of humans an horses, he conuted 74 heads and 196 l
BigorU [14]
X = the number of humans and y = the number of horses.

x+y=74
2x+4y=196

Because the number of humans and horses together is 74, and the total number of legs (2 per every human, x, and 4 per every horse, y) is 196.  Then, just use elimination to solve.

-2(x+y=74)\\2x+4y=196\\\\-2x-2y=-148\\2x+4y=196\\\\2y=48\\y=24

So, now that you have y, you can plug it into the first equation to find x:

x+y=74\\x+24=74\\x=50

So, x = 50 and y = 24, so there are 50 humans and 24 horses.
The correct answer is B.
4 0
3 years ago
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