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3 years ago

Which number below is a prime number? O A. 18 O B. 12 O c. 17 O D. 28

Mathematics

2 answers:

gladu [14]3 years ago

8 0

Answer: 17 is the only prime number

Step-by-step explanation:

S_A_V [24]3 years ago

7 0

Answer:

C 17

Step-by-step explanation:

A. 18 = 2*9 so not prime

B. 12 = 3*4 so not prime

c. 17

D. 28 = 4*7 so not prime

17 = 1*17 so the only numbers are 1 and itself so it is prime

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Write an expression to represent the product of 6 and the square of a number plus 15.

Elenna [48]

Answer:

Step-by-step explanation:

6(x²+15)

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3 years ago

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Firdavs [7]

The correct options are

$5x = - 58 \:$ $5x + 4 = - 54$

<h3>How to find same value of x?</h3>

given that

$\frac{5}{6} x + \frac{2}{3} = - 9$

first find value of x to obtain the equations have the same value of x.

Find the L.C.M between the 6,3

$\frac{5x + 4}{6} = - 9$

Then Cross multiplication should be done

$5x + 4 = - 9 \times 6 \\ 5x + 4 = - 54 \\ 5x = - 54 - 4$

$5x = - 58$

Hence the correct options are

$5x = - 58$

$5x + 4 = - 54$

Learn more about problems on equations, refer:

https://brainly.in/question/742266

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1 year ago

Plot on a number line 4/7

Serjik [45]

Answer:

It will be over 4 and up 7. 4 spaces on the x axis, and 7 spaces on the y axis, the y axis is vertical. Think that the y has a v in it which stands for vertical

Step-by-step explanation:

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3 years ago

How much smaller is the sum of the first 1000 natural numbers than the sum of the first 1001 natural numbers?

aleksandr82 [10.1K]

ANSWER

1001

EXPLANATION

The sum of the first n - natural numbers is

$S_n= \frac{n}{2} (2a + d(n - 1))$

The sum of the first 1000 terms is

$S_{1000}= \frac{1000}{2} (2(1) + 1(1000 - 1))$

$S_{1000}=500 (1001)$

$S_{1000}=500500$

The sum of the first 1001 terms is

$S_{1001}= \frac{1001}{2} (2(1) + 1(1001 - 1))$

$S_{1001}= 1001 \times (501)$

$= 501501$

The difference is

$501501 - 500500= 1001$

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3 years ago

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20 POINTS!

alukav5142 [94]

I think it was √(a^2+b^2. I think.

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3 years ago