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aev [14]
4 years ago
13

Use distributive property to simplify 7(x +2)=6(x+5)

Mathematics
1 answer:
Sladkaya [172]4 years ago
8 0

7x+14=6x+30 is the answer

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Can someone help me with statistic and probability
Sloan [31]

Answer:

sorry if wrong

Step-by-step explanation:

Probability and statistics are related areas of mathematics which concern themselves with analyzing the relative frequency of events. ... Probability deals with predicting the likelihood of future events, while statistics involves the analysis of the frequency of past events.

6 0
3 years ago
A variable force of 3x−2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done
Verdich [7]

Answer:

2.70J.

Step-by-step explanation:

We have been given that a variable force of 3x^{-2} pounds moves an object along a straight line when it is x feet from the origin.  We are asked to find the work done in moving the object from x = 1 ft to x = 10 ft.

We know that dW=Fdx, where F represents force.

dW=3x^{-2}dx

Now, we will integrate both sides of equation as:

\int\limits{dw} =\int\limits^{10}_1 {3x^{-2} \, dx

Take the constant out:

\int\limits{1dw} =3\int\limits^{10}_1 {x^{-2} \, dx

w =3\int\limits^{10}_1 {x^{-2} \, dx

Upon applying power rule of integrals, we will get:

w =3\/[ \frac{x^{-2+1}}{-2+1} ]^{10}_1

w =3[ \frac{x^{-1}}{-1} ]^{10}_1

w =3[ -\frac{1}{x} ]^{10}_1

w =3[ -\frac{1}{10} -(-\frac{1}{1})]

w =3[ -\frac{1}{10}+\frac{10}{10})]

w =3[\frac{9}{10}]

w=2.70

Therefore, the work done by the object is 2.70J.

8 0
3 years ago
Find the value of x. round<br> to nearest degree
belka [17]

Answer:

B

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos x = \frac{adjacent}{hypotenuse} = \frac{11}{20} , then

x = cos^{-1} ( \frac{11}{20} ) ≈ 57° ( to the nearest degree ) → B

7 0
3 years ago
Read 2 more answers
The lenngths of the sides of the triangle are in the extended ratio 8:9:10. The primeter of the triangle is 108 cm. What are the
Usimov [2.4K]

Answer:

A(8)=32cm

B(9)=36cm

C(10)=40cm

Step-by-step explanation:

let 8:9:10=A:B:C

∑ratios=8+9+10=27

Have a great day!

Step-by-step explanation:

5 0
3 years ago
Melissa is buying a sweater the average the cost of the sweater is $18 the sweater is 15% off and sale tax 8% How much where is
Crazy boy [7]

Answer:

$14.07

Step-by-step explanation:

100 - 15 = 85

You change this into a multiplier 0.85.

18 x 0.85 = 15.30

100 - 8 = 0.92

0.92 x 15.30 = 14.07

4 0
3 years ago
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