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zubka84 [21]
3 years ago
13

Write an algebraic expression for 10 less than the difference of 2 times a number and 7

Mathematics
2 answers:
notka56 [123]3 years ago
6 0

Answer:

(2n - 7) - 10

Step-by-step explanation:

(2n - 7) represents "difference of 2 times a number and 7"

- 10 represents "10 less"

Mashcka [7]3 years ago
3 0

2x + 7 - 10

Or it also could be (2x + 7) - 10 but the parenthesis aren't really needed

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Bentley is deciding between two landscaping companies for his place of business company A charges $40 per hour and $175 equipmen
maksim [4K]

Answer:

A = 40x + 175

B  = 50x + 125

5 hours

Step-by-step explanation:

The equations are as follows:

According to the question

Let us assume the number of hours be x

For company A

40x + 175

For company B

50x + 125

Now equate these two equations

40x + 175 = 50x + 125

175 - 125 = 10x

x = 5

Hence, the number of hours is 5

8 0
3 years ago
100pts!! Ellis is painting wooden fenceposts before putting them in his yard. They are each 7 feet tall and have a diameter of 1
NeX [460]

Answer:

39.25 cubic feet of paint will be needed by Ellis.

Step-by-step explanation:

Step-by-step explanation:

Volume of a cylinder:

The volume of a cylinder of radius r and height h is given by:

V = \pi r^2h = 3.14r^2h

How much paint will Ellis need to paint all the surfaces of the 10 fenceposts?

This is the combined volume of these 10 fenceposts.

They are each 5 feet tall and have a diameter of 1 foot.

Radius is half the diameter, so r = \frac{1}{2} = 0.5. Also h = 5

10 fenceposts:

Each has the same volume, so:

V = 10(3.14)r^2h = 31.4(0.5)^2(5) = 39.25

39.25 cubic feet of paint will be needed by Ellis.

hope this helps

6 0
2 years ago
Read 2 more answers
Find the missing side length
jolli1 [7]

Answer:

c. 10

Step-by-step explanation:

Pythagoras theorem is used since it's a right angle triangle

26²-24²=a²

676-576=a²

√100=√a²

a=10

5 0
3 years ago
What I need to know in this question is the answer
RoseWind [281]

Answer:

1.180

2.50

3.56

Step-by-step explanation:

M<4,M<2 and M<5 have to add up to 180 as a result of being a parallel line.

Making m<2 50 since 46°+84=130, 180-130=50.

Since m<1 is 74 and knowing m<2 is 50 74+50=124 180-124=56 m<3=56

Therefore 1,2,3 =180°

4 0
3 years ago
Torque (or moment) is the measure of turning force or twist on an object. If a mechanic is applying 12 Newton centimeters of tor
SashulF [63]

Answer:

1.0638

Step-by-step explanation:

Given the question:

If a mechanic is applying 12 Newton centimeters of torque on a bolt how many pound inches would this be?

Torque = 12 Newton centimeter

Torque which is the turning effect on an object :

1 Newton = 0.225 pound force

1 centimeter = 0.394 inch

Hence ;

1 Newton centimeter = (1 × 0.225 × 0.394) = 0.08865 pound inch

12 Newton centimeter is hence, equals :

(12 × 0.225 × 0.394) pound inch

= 1.0638 pound inch

7 0
3 years ago
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