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4 years ago

What is the solution to 7x-2=2(3x+4)-7

Mathematics

1 answer:

sergeinik [125]4 years ago

4 0

Answer:

7x - 2 = 2(3x + 4) - 7

7x - 2 = 6x + 8 - 7

7x - 2 = 6x + 1

x - 2 = 1

x = 3

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Which line has the same slope as the line passing through (-4,-1)and (-1,8)?

marusya05 [52]

Answer:

A: 9x-3y =5

Step-by-step explanation:

slope of the line = (8-(-1))/(-1)-(-4) = 3

so y = mx+ c , where m= slope

the equation 9x-3y= 5 has the slope 3 since we can make y the subject of the formula to get

y= 3x - 5/3..here m is also equal to 3

7 0

3 years ago

The sum of two natural numbers is 474. One has the digit 1 as its rightmost digit. If this digit is removed from the number, the

Olenka [21]

Answer:

431 and 43

Step-by-step explanation:

Two numbers: y1 and y

Number one: y1 = 10 * y + 1

(10 * y + 1) + y = 474

11y = 473

y = 43

Two numbers: 431 and 43

check: 431 remove 1 (digit) -> 43

431+43=474

8 0

3 years ago

Which ratio is equivalent to 4:10?<br> A:2/5<br> B.8/10<br> C:12/16<br> D:16/10

Dmitriy789 [7]

Answer:

option A 2/5 is the answer

5 0

3 years ago

Read 2 more answers

Sammy's dog eats 3/4 cup of food at each meal. His cat eats 1/8 of what the dog eats. What fraction of a cup does his cat eat?

satela [25.4K]

Answer:

3/32 of a cup of food

Step-by-step explanation:

Sammy's dog eats 3/4 cup of food at each meal. His cat eats 1/8 of that.

This comes out to (1/8)th of (3/4 cup), or:

1 3

----- · ----- cup = 3/32 cup

8 4

The cat eats 3/32 of a cup of food.

7 0

4 years ago

(a) Find an approximation to the integral 2 (x2 − 4x) dx 0 using a Riemann sum with right endpoints and n = 8. R8 =

denpristay [2]

Answer:

Step-by-step explanation:

$\int\limits^2_0 {(x^2-4x)} \, dx$ n=8 f(x) = x² - 4x

convert [0,2] into 8 subintervals

width of each interval is

$\delta x =\frac{2-0}{8}=0.25$

All subintervals are:

[0, 0.25], [0.25, 0.5], [0.5, 0.75], [0.75, 1], [1, 1.25], [1.25, 1.5], [1.5, 1.75] and [1.75, 2]

Let, $x_i$ be the right end point of each interval i=1,..8

$x_1=0.25, x_2=0.5, x_3=0.75, x_4=1, x_5=1.25, x_6=1.5, x_7=1.75, x_8=2$

Reiman sum is

$R_8=\delta x[f(x_1)+f(x_2)+...f(8)]\\\\0.25[f(0.25)+f(0.5)+...+f(2)]\\\\0.25\times[-23.25]\\=-5.8125$

8 0

3 years ago