3 years ago

Hello da 234234r32 ef3qew3e2wr3qefwasdwasd

Mathematics

1 answer:

scoray [572]3 years ago

3 0

Ah, thank you. your question truly made the most of sense.

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The circumstance of a circle changes from 20 to 4 after a dilation. what was the scale factor of the dilation?

VladimirAG [237]

Answer:

Option B

Step-by-step explanation:

The circumference of a circle changes from (pre-image)20 to 4(image) after a dilation.

$Scale\ Factor=\frac{Circumference\ of\ image}{Circumference\ of\ pre-image} \\\\Scale\ Factor=\frac{4}{20}\\\\Scale\ Factor=\frac{1}{5}$

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3 years ago

HELP IM TAKING THE TEST The track team gives awards for first, second, and third place runners. There are 10 students from schoo

-Dominant- [34]

Answer:

Its NOT B

Step-by-step explanation:

I just took the test

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3 years ago

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2m/(2m 3)-(2m)/(2m-3)=1how many extraneous solutions does the equation have?

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$\frac{2m}{2m+3} - \frac{2m}{2m-3} =1 \\ \frac{2m(2m-3)-2m(2m+3)}{4m^2-9} =1 \\ \frac{4m^2-6m-4m^2-6m}{4m^2-9} =1 \\ \frac{-12m}{4m^2-9} =1 \\ -12m=4m^2-9 \\ 4m^2+12m-9=0 \\ m=0.6213 \ or \ m=-3.6213$
For m = 0.6213, $\frac{2(0.6213)}{2(0.6213)+3} - \frac{2(0.6213)}{2(0.6213)-3} \\ \frac{1.2426}{4.2426} - \frac{1.2426}{-1.7574} =0.2929+0.7071=1$
For m = -3.6213, $\frac{2(-3.6213)}{2(-3.6213)+3} - \frac{2(-3.6213)}{2(-3.6213)-3} \\ \frac{-7.2426}{-4.2426} - \frac{-7.2426}{-10.2426} =1.7071-0.7071=1$
Therefore, the equation has no extraneous solution.

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3 years ago

24.94 is 29% of what number?

lapo4ka [179]

Answer:

29 percent (calculated percentage %) of what number equals 24.94? Answer: 86. from google please mark branliest!

Step-by-step explanation:

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3 years ago

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Use decomposition to find the area of the figure.<br>UIT<br>5 cm<br>..7 cm<br>3cm

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