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3 years ago

Which expression is equivalent to (7 - 2x) + (-4x – 10)?

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

4 0

Answer:

this answer should be -6x - 3

Step-by-step explanation:

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Help this will save my grade. I’m right on the edge of failing!

8090 [49]

Answer:

Step-by-step explanation:

1. The slope is -5/2

2. There is no slope for the second one it's just y=3

3. The slope is 3

4. These are perpendicular lines

5. These lines are parallel.

6. These lines are neither perpendicular nor parallel.

7. These lines are perpendicular

8. y = 4/3x - 2

9. y = -1/2x + 5

10. x = -1

Hope this helps!

5 0

2 years ago

A bag contains 3 red, 4 blue, and 6 yellow marbles. One marble is selected at a time, and once a marble is selected, it is not r

astraxan [27]

The probability of choosing two yellow marbles = 5/26

Step-by-step explanation:

Step 1 :

Given

Total number of marbles in the bag = 13 marbles

Number of yellow marbles = 6.

We choose 2 marbles from the bag without replacing and need to determine the probability that both are yellow.

Step 2 :

Probability of finding yellow marble in the first try = Number of yellow marbles / Total number of marbles = $\frac{6}{13}$

Once the yellow marble is selected we have 5 yellow marbles among 12 remaining marbles in the bag.

Probability of finding yellow marble in the second try = Number of yellow marbles / Total number of marbles = $\frac{5}{12}$

Step 3:

P(yellow in first 2 tries) = P(yellow in first try) * P(yellow in second try)

P(yellow in first 2 tries) = $\frac{6}{13} * \frac{5}{12}$ = $\frac{5}{26}$

Step 4:

Answer:

The probability of choosing two yellow marbles = 5/26

4 0

2 years ago

Addition and Subtraction of Rational

kvv77 [185]

Answer:

$\frac{-1}{6}$

Step-by-step explanation:

$-\frac{5}{12} + \frac{3}{12} = -\frac{2}{12}$

$-\frac{2}{12} = -\frac{1}{6}$

which can also be written as:

$\frac{-1}{6}$

4 0

3 years ago

69.6% of all full-time law enforcement officers are sworn officers, and of those, 88.2% were males. Females, however, make up 60

Evgen [1.6K]

Answer:

The probability that he or she is a male or a civilian employee is 1.037068

Step-by-step explanation:

Probability of sworn officers = 0.696

Probability of civilians = 1 - 0.696 = 0.304

Probability of male sworn officers = 0.882*0.696 = 0.6139

Probability of male civilian = (0.304*(1-0.608)) = 0.1192

Hence probability that he or she is a male or civilian employee is

0.6139 + 0.1192 + 0.304 = 1.037068

7 0

2 years ago

Read 2 more answers

Find the value of x. 4^3 = x

pshichka [43]

Answer:

x=64

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers