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Paraphin [41]
3 years ago
8

The difference between seven times a number and eight more than four times the number

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
7 0

Seven times a number = 7x
Eight more than four times the number = 8 + 4x
.
Suppose x = 5 ,
7x = 7×5 = 35 and
8 + 4x = 8 + 4×5 = 8 + 20 = 28

Nookie1986 [14]3 years ago
3 0

A difference is the result of a subtraction.

Call the number n.

"seven times a number": 7n

"eight more than four times the number": 4n + 8

"The difference between seven times a number and eight more than four times the number": 7n - (4n + 8)

Answer: 7n - (4n + 8)

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5 0
2 years ago
Factor completely<br> -2x^4+6x^3+8x^2
vlada-n [284]

Answer:

-2x²(x + 1)(x - 4)

Step-by-step explanation:

Hello!

Factor:

  • -2x^4 + 6x^3 + 8x^2
  • -2x^2(x^2 - 3x - 4)        Take out GCF

Think: What numbers add up to -3 and multiply to -4?

Answer: -4 and 1

Continue:

  • -2x^2(x^2 - 3x - 4)
  • -2x^2(x^2 - 4x + x - 4)
  • -2x^2(x(x - 4) + 1(x - 4))       Factor by Grouping
  • -2x^2(x + 1)(x - 4)

The complete factored form is -2x²(x + 1)(x - 4)

5 0
2 years ago
Write a simplified expression using exponents that represents the area of the square.
olganol [36]

Answer:

The area of the square is 25d^{2}.

Step-by-step explanation:

In the given square, the length of the side = 5d.

Area of a square = side × side

Given: Side = 5d

Now plug in side 5d in the above area formula, we get

Area of the square = 5d × 5d

= 25d^{2}

Therefore, the answer is 25d^{2}.

7 0
3 years ago
Write an equation for the line that has a slope of 1/2 and passes though the point (-2,5)?
Schach [20]

Answer:

y=1/2x+6

Step-by-step explanation:

Y=MX+B

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5 0
3 years ago
Read 2 more answers
Please help me with this. Please!
jonny [76]

Answer:

214

Step-by-step explanation:

A circle is 360 degrees

Arc EF is 146 degrees

EF + EDF = full circle

146 + EDF = 360

Subtract 146 from each side

146-146 +EDF = 360-146

EDF =214

4 0
3 years ago
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