3 years ago

Identify the value of x that makes each pair of ratios equivalent

Mathematics

1 answer:

zhenek [66]3 years ago

8 0

Your answer is C. 1 :)

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If P(A)=0.4, P(A and B)=0.2,and P(A or B)=0.5, What is P(B)

Vladimir [108]

Answer:

$\boxed{\ P(B)=0.3 \ }$

Step-by-step explanation:

Hi,

We know that

P(A or B)=P(A)+P(B)-P(A and B)

so P(B)= P(A or B) - P(A) + P(A and B)

P(B) = 0.5 - 0.4 + 0.2 = 0.3

thanks

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2 years ago

-0.75p-2=0.25 <br><br> Help me please

Art [367]

First you change the number that is not with "p" and it changes with the opposite sign

-0.75p = 0.25 + 2

-0.75p = 2.25

then as -0.75 and p are multiplying, you pass -0.75 as dividing

p = 2.25/-0.75

p = 3

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2 years ago

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Arianna has a large piece of fabric that she wants to use to make some scarves. The number N of scarves she can make is inversel

kow [346]

She can make 12 scarves if the area of each scarf is 4 square feet.

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3 years ago

The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a

Contact [7]

Answer:

$3.8465 *10^7$ square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula $SA=4\pi r^2$ . Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

$SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000$

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. $3.8465 *10^7$

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3 years ago

Last month the amount on Jaden's bank account statement went from $200 to $150.

vodka [1.7K]

Answer:

That is a 25% change.

Step-by-step explanation:

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2 years ago