4 years ago

Thirteen less than eight times a number is three more than four times the number.

Mathematics

1 answer:

Lisa [10]4 years ago

6 0

Answer:

Step-by-step explanation:

Let the number = x

8x - 13 = 4x + 3 Add 13

8x = 4x + 3 + 13 Combine

8x = 4x + 16 Subtract 4x

8x - 4x = 16 Combine

4x = 16 Divide by 4

x = 16/4

x = 4

You might be interested in

Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues. (assume that

Alex73 [517]

This is an arithmetic sequence with first term 2 and common difference 7. The general term a[n] can be written as
a[n] = 2 +7(n -1)
or
a[n] = 7n -5

7 0

3 years ago

Picking a card and spinning a spinner are independent events. True False

nekit [7.7K]

Answer:

True

Step-by-step explanation:

Both happened in different times and are seprate events

7 0

3 years ago

Find the difference. (9/x^2-9x)-(6/x^2-81)

Sunny_sXe [5.5K]

The difference is $\frac{3 x+81}{x(x-9)(x+9)}$

Explanation:

The expression is $\left(\frac{9}{x^{2}-9 x}\right)-\left(\frac{6}{x^{2}-81}\right)$

Removing the parenthesis, we have,

$\left\frac{9}{x^{2}-9 x}\right-\left\frac{6}{x^{2}-81}\right$

Factoring the terms $x^{2}-9 x$ and $x^{2}-81$ , we get,

$\frac{9}{x(x-9)}-\frac{6}{(x+9)(x-9)}$

Taking LCM, we get,

$\frac{9(x+9)-6x}{x(x-9)(x+9)}}$

Simplifying the numerator, we get,

$\frac{9x+81-6x}{x(x-9)(x+9)}}$

Subtracting the numerator, we have,

$\frac{3 x+81}{x(x-9)(x+9)}$

Hence, the difference is $\frac{3 x+81}{x(x-9)(x+9)}$

7 0

3 years ago

What's the GCF for the pair of numbers. 27, 45 i only need the answer

VashaNatasha [74]

Answer:

9 is the answer

Step-by-step explanation:

7 0

3 years ago

Given y = 3x + 1 State the quadrants in which this graph is in. (Use the numbers 1-4)

FrozenT [24]

I have no clue man or woman

3 0

3 years ago