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3 years ago

Factor the expression below.

Mathematics

2 answers:

larisa86 [58]3 years ago

8 0

The answer to this is the third one

zzz [600]3 years ago

4 0

The factored expression would be B.) (5x+7)(5x-7)

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The formula for the circumference of a circle is c=rd, where d is the length of the diameter. If d is a rational number, what ca

dimaraw [331]

Answer: The answer is (d) It is an irrational number.

Step-by-step explanation: Given formula for circumference of a circle is

$\textup{c}=\textup{r d},$

where 'd' is the length of the diameter and a rational number.

We are to choose one of the given four options for the circumference 'c' of the circle.

We know that the circumference of a circle with diameter 'd' is given by

$\textup{c}=\pi \textup{d},$

Comparing this with the given equation, we get

$r=\pi,~\textup{where}~\pi~\textup{is an irrational number}=\dfrac{22}{7}.$

Now, the product of a rational and an irrational number is again irrational, so 'r × d' will be an irrational number.

Hence, the circumference, c = rd is irrational.

Thus, the correct option is (d) It is an irrational number.

4 0

3 years ago

Read 2 more answers

Jared buys 2.4 pounds of broccoli for $3.24. Which epuation could Jared use to find c, the cost of each pound of broccoli

sergey [27]

Answer:

the one with 2.4c = 3.24

Step-by-step explanation:

hope this helps

5 0

3 years ago

1. If the same number is added to the numerator and subtracted from the denominator of 23/12, the resulting fraction is equivale

ICE Princess25 [194]

Answer:

The number is -2

Step-by-step explanation:

step 1

Find the reciprocal of 2/3

Remember that when multiply a number by its reciprocal, the result is 1

The reciprocal of 2/3 is 3/2

step 2

Let

x-----> the number added to the numerator and denominator

$\frac{23+x}{12-x}=\frac{3}{2}$

Solve for x

$2(23+x)=3(12-x)\\46+2x=36-3x\\2x+3x=36-46\\5x=-10\\x=-2$

step 3

verify

$\frac{23+x}{12-x}$

substitute x=-2

$\frac{23-2}{12+2}$

$\frac{21}{14}$

Simplify

$\frac{3}{2}$ ----> is ok

therefore

The number is -2

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3 years ago

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20+25 divided by 2 +23.75 - 42.15 = 4.100...

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4 years ago

Cooper just started a running plan where he runs 8 miles the first week and then

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He would’ve ran 286 miles in total.

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