All categories

2 years ago

Which expression is equivalent to (7x - 5) - (3x - 2)

Mathematics

1 answer:

Kryger [21]2 years ago

7 0

Answer:

$4x-3$

Step-by-step explanation:

$(7x-5) -(3x-2)$

Remove unnecessary parentheses

$7x-5-(3x-2)$

When there is a " _" in front of any expression in parentheses , change the sign of each term of the expression.

$7x-5-3x+2$

Collect Like terms by subtracting their Coefficients

$(7-3)x$

Subtract the numbers

$4x-5+2$

Keep the sign of the number with the larger absolute value and subtract the smaller absolute value from the larger

$-(5-2)$

Subtract the numbers

$-3$

$4x-3$

PLEASE MARK ME AS BRAINLIEST

You might be interested in

In a metal fabrication process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are n

Leto [7]

Answer:

95% Confidence interval: (14.4537 ,15.1463)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 15 feet

Sample mean, $\bar{x}$ = 14.8 feet

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, σ = 0.65 feet

Degree of freedom = n - 1 = 15

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 15 and}~\alpha_{0.05} = \pm 2.1314$

$14.8 \pm 2.1314(\dfrac{0.65}{\sqrt{16}} ) \\\\= 14.8 \pm 0.3463 = (14.4537 ,15.1463)$

is the required confidence interval for the true mean length of rods.

3 0

3 years ago

Read 2 more answers

Part B

ziro4ka [17]

The linear equation that has a slope of -7 and crosses the x-axis at (3, 0) is:

y = -7x + 21

<h3>How to find the linear equation?</h3>

A general linear equation is:

y = a*x +b

Where a is the slope and b is the y-intercept.

The slope must be equal to the limit found in part a, and you say that it is equal to -7, so the slope is -7. And for how is written the problem, I understand that it crosses the x-axis at x = 3.

Then we will have:

y = -7*x + b

Such that, when x = 3, y = 0, then:

0 = -7*3 + b

21 = b

Then the linear equation is y = -7x + 21

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

3 0

1 year ago

What is the gcf for 14 and 55?

pentagon [3]

The greatest common factor would be 1 because you need to factor both 14 and 55 so factor 14 and you get 2 and 7 factor 55 you get 5 and 11 the the GCF has to be 1
I hope this is helpful

4 0

2 years ago

Angela uses 7 1/2 inches each of 6 different colors of embroidery floss to make one friendship bracelet. each package of floss c

shusha [124]

26 feet * 12 inces per foot / 7.5 inches = 41.6, which is 41 full bracelets

6 0

3 years ago

The width of the rectangle is 75% of its length, the length is 24, what's the area?

lapo4ka [179]

S = a * b where a - length and b - width
a = 24
b = 0.75 * a
S = 24 * 24 * 0.75 = 432

7 0

2 years ago

Read 2 more answers