DG's Plumbing and Heating charges $50 plus $75 per hour for emergency service. Bill remembers being billed just over $300 for an emergency call. How long to the nearest hour was the plumber at Bill's house?

Answer:

15 minutes

Step-by-step explanation:

The formula is

1/a + 1/b = 1/c to determine joint time  where a and b are the times alone and c is the time together

1/10 + 1/ 30 = 1/c

Multiply each side by 30c to clear the fractions

30c( 1/10 + 1/ 30) = 1/c * 30c

3c + c = 30

4c = 30

Divide by 4

4c/4 = 30/4

c = 7.5 minutes

This is the time for 50 pages

We want 100 pages, so multiply by 2

7.5 *2 = 15 minutes

Answer:

502

Step-by-step explanation:

504-10=494

494+6=500

500+2=502

answer 502

Answer:

(10x5+15x3)-7

Step-by-step explanation:

The definition of a compund intrest is:

Compound interest (or compounding interest) is the interest on a loan or deposit calculated based on both the initial principal and the accumulated interest from previous periods.

hope this helps :D

Answer:

y = -5/4x - 3/2

Step-by-step explanation:

y2 - y1 / x2 - x1

6 - (-4) / -6 - 2

10 / -8

= -5/4

-4 = -5/4(2) + b

-4 = -5/2 + b

-3/2

Answer:

3/2

Step-by-step explanation:

Answer:

B) 3^-5 (1 / 243) and D) 2^5 x 6^-5 (1 / 243)

Step-by-step explanation:

3 to the negative 5th power as a fraction is

1 / 243.

2 to the power of 5 multiplied by 6 to the power of negative 5 also equals 1 / 243.

Both expressions are equivalent to 2^5 / 6^5 because they equal the same thing (1 / 243).

Answer:

The humming bird weighs more than the nickls.

you need to compare the decimals.

Step-by-step explanation:

0.16>0.18

Answer: c. biofuel

Step-by-step explanation: just took test

The best alternative energy technologies is most likely to be used to power a car is bio-fuel

Bio-fuel is a type of fuel that is created quickly from biomass, as opposed to the lengthy natural processes that result in the development of fossil fuels like oil. Plants may be used to make biofuel, as well as home, commercial, and agricultural biowaste.

Given data ,

Any fuel that is made from biomass, or plant, algae, or animal waste, is referred to as a biofuel. Unlike to fossil fuels like petroleum, coal, and natural gas, biofuel is seen as a source of renewable energy due to the ease with which such feedstock material may be supplied.

In light of rising petroleum prices and growing concern about the role fossil fuels play in global warming, biofuel is frequently promoted as a convenient and ecologically friendly substitute for petroleum and other fossil fuels.

Hence , the alternative to power a car is bio-fuel

To learn more about bio-fuel click :

https://brainly.com/question/25015233

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Answer:

8 turkey burgers

Step-by-step explanation:

1/4 x 8 = 2

There are 8 turkey burger can Benito make.

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

Benito has 2 pounds of ground turkey.

And, He needs 1/4 pound to make 1 turkey burger.

Now,

Let the number of turkey burger = x

Since, He needs 1/4 pound to make 1 turkey burger.

Hence, The number of turkey burger made by 2 pounds = 4 × 2

                                                                                         = 8

Thus, The number of turkey burger made by 2 pounds = 8

Learn more about the multiply visit:

brainly.com/question/14176303

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Answer:

GA = Ray

Step-by-step explanation:

EB = Line

AB = Line Segment

Answer:

[tex]81\pi in(2) [/tex]

81pi

Answer:

walk=34 bus =17

Step-by-step explanation:

51÷3=17 1/3 of 51=17 so add 17 and 17 togeter to get 2/3

Answer:

Step-by-step explanation:

total=51

2/3 walk

1/3 bus

[tex]\frac{2}{3}51=\frac{102}{3}=34 ~=>34~students ~walk\\\\\frac{1}{3}51=\frac{51}{3}=17~=>~17~students ~take~the~bus[/tex]

Answer:

C

Step-by-step explanation:

That is because when you take 20 to the other side it will be x= 120 -20

x=100 miles

final answer C

Answer:

I think 23%

Step-by-step explanation:

Answer:

answer of question no 1

Step-by-step explanation:

16-2x = 5x+9 (Given)

or, 16-9=5x+2x

or, 7= 7x

or, x = 7/7

or, x= 1

Answer:

30

Step-by-step explanation:

A squared + B squared = C squared

24*24= 576 18*18= 324   324+576= 900    square root of 900 is 30

Answer:look it up on quizlet its easier

Step-by-step explanation:

Answer:

3x + 2y = 29

5x + 2y = 35

Step-by-step explanation:

Let

x = cost of one-inch binders

y = cost of two-inch binders

Rasheed:

3x + 2y = 29 (1)

Matar:

5x + 2y = 35 (2)

3x + 2y = 29 (1)

5x + 2y = 35 (2)

Using elimination method, subtract (1) from (2)

5x - 3x = 35 - 29

2x = 6

x = 6/2

x = 3

Substitute x = 3 into (1)

3x + 2y = 29 (1)

3(3) + 2y = 29

9 + 2y = 29

2y = 29 - 9

2y = 20

y = 20/2

y = 10

Answer:

-5

Step-by-step explanation:

Our first step is to distribute/expand in the brackets so we are able to isolate x-term.

[tex] \large{4 - 2x - 14 = 3x + 15}[/tex]

I hope you still remember that when multiplying positive with negative, it becomes negative. Then we combine like terms - we isolate the 2x by adding 2x both sides and subtract both sides by 15.

[tex] \large{4 - 2x - 14 + 2x - 15 = 3x + 15 + 2x - 15} \\ \large{ - 25 = 5x}[/tex]

Then to divide both sides by 5 so we can finally get the x-term isolated.

[tex] \large{ \frac{ - 25}{5} = \frac{5x}{5} \longrightarrow - 5 = x}[/tex]

Dividing the negative by positive results in negative as well! Next step is optional, which is about checking the answer. To check the answer if it's right or not, we can do by substituting x = -5 in the equation and solve until these two outcomes may occur:

[tex] \large{4 - 2(x + 7) = 3(x + 5)}[/tex]

From the given equation above, substitute the value of x which is -5 in the equation.

[tex] \large{4 - 2( - 5 + 7) = 3( - 5 + 5)}[/tex]

Evalute/Simplify:

[tex] \large{4 - 2(2) = 3(0) \longrightarrow 4 - 4 = 0} \\ \large \boxed{0 = 0}[/tex]

Since both sides are equal or same. Thus the solution to this equation is x = -5.

Answer

I hope this helps! If you have any doubts or questions, don't hestitate to ask in the comment! Good luck on your assignment and have a great day! :)

Answer:

In geometry, the area can be defined as the space occupied by a flat shape or the surface of an object. The area of a figure is the number of unit squares that cover the surface of a closed figure. Area is measured in square units such as square centimteres, square feet, square inches, etc.

Step-by-step explanation:

Answer:

Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.

Step-by-step explanation:

Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.

Answer:

Making r the subject

r=243/3 = 81.

3r = 243

r = 243/3

r= 81

hope it helps you ♡♡

Answer:

120. hope his helps.

Step-by-step explanation:

50 + 70 = 120

Answer:

D) adjacent

Step-by-step explanation:

Answer:

adjacent

Step-by-step explanation:

the two angles have a side in common

Answer:

Number of 12-packs = 14

Step-by-step explanation:

 Cost       Number of 12-packs

 3.50               1

49.00              x

        [tex]\frac{1}{x} = \frac{3.50}{49}\\\\1 \times 49 = 3.50 \times x\\\\\frac{49}{3.50} = x\\\\x = 14[/tex]

Number of 12-packs for $49 = 14

Answer:

26

Step-by-step explanation:

5x+6y

substitute x=16 and y=-9:

5*16+6*(-9)

=80-54

=26

Answer:

2nd one

Step-by-step explanation:

Hope this helps,

Applepi101

Answer:

Step-by-step explanation:

[tex]a^{m}*a^{n}=a^{m+n}\\\\9^{10}*9^{x}=9^{10+x}[/tex]

In exponent multiplication, if the bases are same then add the exponents.

[tex] \small \sf \leadsto 9 {}^{10 +x} [/tex]

Step-by-step explanation:

Using exponent's product rule

[tex] \small \sf \: x {}^{n} \times x {}^{m} = x {}^{n + m} [/tex]

[tex] \small \sf \leadsto \: 9 {}^{10} \times 9 {}^{x} [/tex]

[tex] \small \sf \leadsto 9 {}^{10 + x} [/tex]