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Lilit [14]
3 years ago
8

7 is a prime number. No multiple of 7, except 7 itself, can be a prime number. Explain why not.

Mathematics
1 answer:
Harrizon [31]3 years ago
6 0

Answer:   Answer is in the steps.

Step-by-step explanation:

No multiple of 7 can be a prime number because then it will   have more than two factors.7 is a prime number because it has only two factors 1 and itself.  For example, 14 is a multiple of 7 because 7 times 2 is 14. But now it  14 itself will not be a prime number because it has more than two factors which  is 1,2,7 and 14.

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Which of the following equations have exactly one solution?
BARSIC [14]

Answer:

2, 3, 4 all have one solution.

Step-by-step explanation:

The first one has no solution.

The second one has a solution of -65/68.

The third one has a solution of 5.

The fourth one has a solution of 13/2.

Hope this helps!!

Let me know if I'm wrong...

3 0
4 years ago
Solve for x. Show each step please . Circle your final answer. <br> 2(8-12x)+8x= -25x+52
Vera_Pavlovna [14]

Answer:

x = 4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2(8−12x)+8x=−25x+52

(2)(8)+(2)(−12x)+8x=−25x+52(Distribute)

16+−24x+8x=−25x+52

(−24x+8x)+(16)=−25x+52(Combine Like Terms)

−16x+16=−25x+52

−16x+16=−25x+52

Step 2: Add 25x to both sides.

−16x+16+25x=−25x+52+25x

9x+16=52

Step 3: Subtract 16 from both sides.

9x+16−16=52−16

9x=36

Step 4: Divide both sides by 9.

9x/9 = 36/9

x = 4

8 0
4 years ago
Help please i am stuck
BaLLatris [955]

Answer:

x = 25

Angle B = 65 degrees

Angle C = 50 degrees

Step-by-step explanation:

All triangles will add up to 180 degrees.

65 + 3x - 10 + 2x = 180

Combine like terms

55 + 5x = 180

Subtract both sides by 55

5x = 125

Divide both sides by 5

x = 25

Plug in the value for x in angle B:

3(25) - 10

75 - 10

65

Do the same for angle C:

2(25)

50

Check your work:

65 + 65 + 50 = 180

180 = 180

Correct

6 0
3 years ago
Help me i don't understand this one plssss
qaws [65]

Answer:

28cm✨

Step-by-step explanation:

The perimeter of the given square is a + a + a + a

7+7+7+7=28

Have a great time studying.

4 0
2 years ago
Julio joined an athletic club. There was a one-time fee of $49.95 to join the club, plus a monthly fee of $24.95. Julio has paid
Rama09 [41]

c (cost)
m (month)


c= xm + b

$424.20= 24.95m+ $49.95

Move everything except variable on one side.

424.20 - 49.95 = $374.24

$374.25 = 24.95m

Divide by 24.95

m = 15

15 Months
3 0
4 years ago
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