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Alex17521 [72]
3 years ago
13

Which number is composite? a. 79 b. 87 c. 89 d. 97

Mathematics
1 answer:
n200080 [17]3 years ago
8 0
I am pretty sure b. is right. This is because 87 is not prime
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Please help me I need help for this
amid [387]

Answer:

the greatest common factor is 4a

5 0
3 years ago
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Desribe what the value of 3/7 as a decimals would look like.​
ss7ja [257]
0.4286 would be the decimal
7 0
3 years ago
In this in this equation y equals 14 x what is the constant of proportionality
lions [1.4K]

Answer:

We conclude that the value of the constant of proportionality.

  • k = 14

Step-by-step explanation:

We know that if 'y' varies directly with 'x', we use the equation

y ∝ x

y = kx

where 'k' is called the constant of proportionality.

Given the equation

y = 14x

comparing with the equation

y = kx

Thus,

k = 14

Therefore, we conclude that the value of the constant of proportionality.

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6 0
3 years ago
Which fraction expresses -30/54 in lowest terms?
Pavlova-9 [17]
-30/54 in simplest form:

First, we can start out by finding the greatest common factor (GCF) of the numerator (30) and the denominator (54). To do so, we will list the factors of each number, find the common ones and then the greatest.

Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 54: 1, 2, 3, 6, 9, 18, 27, 54

Look through both sets of factors. Which are the common factors? 1, 2, 3, and 6 are the common factors of 30 and 54. Now, we have the find the greatest common factor. Basically, which number has greater value out of 1, 2, 3, and 6? The GCF is 6.

Second, our last step is to divide the numerator (30) and denominator (54) by our recently found GCF which was 6. This will create a new fraction which is in simplest form.

30 \div 6 = 5 \\ 54 \div 6 = 9

Let's collect our new numerator and denominator and rewrite our brand new fraction in its simplest form. 
-\frac{5}{9}

Answer in fraction form:\fbox {-5/9}
Answer in decimal form: \fbox {-0.5556}
7 0
4 years ago
The sales tax on a $350 computer is $ 22.75. find the sales tax rate.
likoan [24]

Set up an equation to solve for the tax rate, x:

350(x) = 22.75\\x = \frac{22.75}{350}\\x = 0.065\\x = 6.5%


We can conclude that the tax rate on the computer was 6.5 percent.

7 0
3 years ago
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