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2 years ago

Please help much appreciated

Mathematics

2 answers:

drek231 [11]2 years ago

6 0

Answer:

3x-5+5x+1

8x-4 is the correct answer

djyliett [7]2 years ago

6 0

Answer:

8x-4

Step-by-step explanation:

First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:

3x - 5 + 5x +1

Next, group like terms:

Зх + 5х — 5 + 1

Now, combine like terms:

(3 + 5)x + ( – 5 + 1)

8x + ( – 4)

8х — 4

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The average amount that a college student spends on a textbook is $205. What is the probability that a students spends between $

garri49 [273]

Complete question :

The average amount that a college student spends on a textbook is $205 with a

standard deviation of $35. What is the probability that a student spends:

A. between $10 and $310?

Answer:

0.999

Step-by-step explanation:

Mean, m = 205 ; Standard deviation, s = 35

Z = (x - m) / s

x = 310

Z = (310 - 205) / 35 = 3

P(z < 3) = 0.99865

x = 10

Z = (10 - 205) / 35 = - 5.57

P(Z < - 5.5)

P(z < 3) - P(z < - 5.5)

0.99865 - 0

= 0.999

5 0

2 years ago

Which inequality is shown in this graph

Katena32 [7]

ANSWER

$y \leqslant - 2x - 2$

EXPLANATION

The boundary line passes through (-2,2) and (0,-2).

The slope of this line is

$m = \frac{ - 2 - 2}{0 - - 2}$

$m = \frac{ - 4}{2} = - 2$

The y-intercept is , c=-2.

The slope-intercept form of this line is given by;

$y = mx + c$

We substitute values to obtain;

$y = - 2x - 2$

Since the lower half-plane is shaded the required inequality is

$y \leqslant - 2x - 2$

7 0

2 years ago

A circle with a circumference of 111.6 cm is centered at the vertex of an angle. The rays of the angle subtend an arc that is 13

Bad White [126]

Answer:

1115555

Step-by-step explanation:

4 0

2 years ago

Help please!! 15 points!!

maxonik [38]

Answer:

A and D

Step-by-step explanation:

One side-base right triangle and one angle-based right triangle.

6 0

2 years ago

Read 2 more answers

Don’t save the answer and I really need help

Ksju [112]

9514 1404 393

Answer:

zero solutions

Step-by-step explanation:

The first inequality has a boundary line with a slope of 3 and a y-intercept of 9. Shading is above the boundary line.

The second inequality has a parallel boundary line with a slope of 3 and a y-intercept somewhat lower, at -1. Shading is below this boundary line.

There is a gap between the shaded areas, so no points will be solutions to both inequalities.

3 0

2 years ago

Please help much appreciated ​

Please help much appreciated