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Varvara68 [4.7K]
3 years ago
15

Which expression is equivalent to 42−14

Mathematics
1 answer:
Mamont248 [21]3 years ago
5 0

Answer:

4(x - 3)

Step-by-step explanation:

When you put brackets around a binomial (has 2 parts separated by a plus / - sign), you must take out a common factor from both terms separated by the +  or - sign

A only has the 4 taken away from the x. The answer is not A

B has the 3 removed from the 12, not the x, so B is not the answer.

C that's the answer.

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IM BEGGING PLZ! I’ll mark brainliest! Plz!
Free_Kalibri [48]

Answer:

Step-by-step explanation:

SOHCAHTOA

Sine is opposite over hypotenuse

Cosine is adjacent over hypotenuse

Tangent is opposite over adjacent

In this context, opposite means the side opposite of the angle. Adjacent means the side that is touching the angle. And the hypotenuse is the longest side, which is usually visually obvious.

3.) tan(25) = x/31

Use a calculator for tan(25), then multiply both sides by 31 to get your x value.

x = 14.5

4.) cos(48) = 17/x

Use a calc to do 17/cos(48) to get the x value

x = 25.4

5.) sin(theta) = 17/18

Divide 17/18, then take the inverse sine of both sides with a calculator to get the theta value

theta = 70.8 degrees

6.) tan(theta) = 31/42

Divide 31/42, then take the inverse tangent of both sides with a calc.

theta = 36.4 degrees

7.) Your best bet is to draw a picture. For my case, Im going to imagine it. The angle is 35 degrees and the hypotenuse is 300 feet. The question is asking for the opposite of the angle. This calls for sine.

sin(35) = x/300

x = 172.1 feet

8 0
3 years ago
Nico wants to use a horizontal number line to compare 1 3/4
e-lub [12.9K]

Answer:

1 3/4 is greater than 1.5.

Step-by-step explanation:

1. To make a line that measures 1 3/4, make 2 regular lines.

2. Divide one of the lines into 4 equal sections and erase the one section and leaving you with 1 3/4.

To make the 1.5:

1. Make a line and make another line but that is half of the length of the previous line.

6 0
4 years ago
Read 2 more answers
Please help.. it’s a to d
sergeinik [125]

Answer:

a = 3/4 in

b = 19/8 in

c = 25/8 in

d = 29/8 in

Step-by-step explanation:

7 0
3 years ago
An urn contains three red balls, five white balls, and two black balls. Four balls are drawn from the urn at random without repl
Nana76 [90]

Answer:

0

Step-by-step explanation:

total number of balls = 3+5+2= 10

Probability of getting red P(R) = 3/10

Probability of getting white P(W) = 5/10

Probability of getting black P(B) = 2/10

for each red ball drawn you win $6 and for each black ball drawn you loose $9 dollars

E(X)= 6×3/10 +0×5/10 -9×2/10= 0

E(X)= 0

8 0
3 years ago
A sphere has a diameter of 32 ft. what is it’s surface area
LuckyWell [14K]

Answer:

3216.99

Step-by-step explanation:

A = 4 \pi r^{2}

d = 2r

A =\pi d^{2}

= \pi * 32^2 = 3216.99  

4 0
4 years ago
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