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3 years ago

There are 50 books that are either red or blue. If 30 books are blue, what

Mathematics

1 answer:

RUDIKE [14]3 years ago

5 0

Answer:

The answer is 20%

Step-by-step explanation:

20% because if there are 50 altogether and there are only 30 blue books, then there 20 more books that are red that will make the count of 50

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Factor 5v^2 - 23v - 10

AfilCa [17]

Answer:

$(5v + 2)(v - 5)$

Step-by-step explanation:

Hello!

The expression is written in the form of $ax^2 + bx + c$

Let's factor by grouping:

$ac = -50$

The sum of the factors of -50 should add up to -23.

-25 and 2 work for this.

Expand and factor:

$5v^2 - 23v - 10$
$5v^2 - 25v + 2v - 10$
$5v(v - 5) +2(v -5 )$
$(5v + 2)(v - 5)$

The factored expression is $(5v + 2)(v - 5)$

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2 years ago

A bicycle wheel has a circumference of 75 inches. What is the approximate radius of the wheel?

riadik2000 [5.3K]

Answer:

23.87

Step-by-step explanation:

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3 years ago

In the following equation, a and b are both integers. a(3x-8)=b -18x

zaharov [31]

The value of a is -6
The value of b is 48

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3 years ago

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What is the volume of the sphere?

poizon [28]

Answer: 113.1

Step-by-step explanation:

The formula is $\frac{4}{3}$ $\pi$ $r^{3}$

The radius is 3, and 3 cubed is 27.

Then, 27 x $\pi$ is about 84.82

Finally, 84.82 x $\frac{4}{3}$ is about 113.1

Hope this helps. Please mark as brainliest, thanks!

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3 years ago

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Y= 1/3 (x + 4)(x - 2)

Setler79 [48]

Answer:x = -1 +√ 3(3 + y)

Step-by-step explanation: solve the equation for x by finding a, b and c of the quadratic then applying the quadractic formula

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3 years ago