i'll mark brainiest if right answer

If 1 match releases 1100 joules of heat energy and we know that 1 joule = 0.239 calories. This means that 1 match releases 1100 * 0.239 calories

1 match releases 262.9 calories.

Again, if 1 match produces 262.9 calories, then

1 match = 262.9 calories

x match = 2100 calories

if we cross multiply, we have

1 match * 2100 calories = x match * 262.9 calories

x match = 2100/262.9

x match = 7.987 matches

Therefore, approximately 8 matches are needed

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Answer:

= 1 . 8 4 6 1 5 3 8 4 6

Step-by-step explanation:

I took the test yesterday and I got a 100 on the math part

Answer/Step-by-step explanation:

Combine multiplied terms into a single fraction

2.7z+1.2z−6.5=0.7

2 7 / 1 0 + 1 . 2 − 6 . 5 = 0 . 7

Combine multiplied terms into a single fraction

2 7 / 1 0 + 1 . 2 − 6 . 5 = 0 . 7

2 7 /1 0 + 6 5 − 6 . 5= 0 . 7

Find common denominator

2 7 /1 0 + 6 5 − 6 . 5= 0 . 7

[tex]\frac{27z}{10} +\frac{2.6z}{10} +\frac{10(-6.5)}{10} =0.7[/tex]

Combine fractions with common denominator

[tex]\frac{27z+2*6z+10(-6.5)}{10} =0.7[/tex]

Multiply the numbers

[tex]\frac{27z+12z-65}{10} =0.7[/tex]

Combine like terms

[tex]\frac{39z-65}{10} =0.7[/tex]

Multiply all terms by the same value to eliminate fraction denominators

[tex]10*\frac{39z-65}{10} =10*0.7[/tex]

Cancel multiplied terms that are in the denominator

39z-65=10*0.7

Multiply the numbers

39z-65=7

Add 65 to both sides of the equation

39z-65+65=7+65

Simplify

39z=72

Divide both sides of the equation by the same term

[tex]\frac{39z}{39} =\frac{72}{39}[/tex]

Simplify

Z= 1.846153846

Answer:

t=12.5 hours Image transcriptions Bobby's Garage R = 200 + 18t Sherie's Gar

Step-by-step explanation:

I'm not sure what the rest is but I hope that can give you some sort of clue as to what it is :)

" t=12.5 hours Image transcriptions Bobby's Garage R = 200 + 18t Sherie's Gar"

Answer:

Step-by-step explanation:

Simplify the following expression 5(3x + 7)

5(3x + 7)=

15x + 35

Answer:

15x + 35

Step-by-step explanation:

5×3x+7×5

=15x+35

Answer:

35x + 1.5

Step-by-step explanation:

The answer will be:-

0.75

0.80

Answer:

y = 12

x = 4.4

Step-by-step explanation:

Scale factor is calculated by comparing the opposing side lengths and writing them as a fraction:

8/20 = 2/5 is the scale factor now to find the value of x and y we can use this scale

y/30 = 2/5 cross multiply expressions

5y = 60 divide both sides by 5

y = 12

same goes for x:

x/11 = 2/5 cross multiply

5x = 22 divide both sides by 5

x = 4.4

Answer:21.9FM

Step-by-step explanation:

Answer:

51

Step-by-step explanation:

357 ÷ 7 = 51 just divide

Answer:

51

Step-by-step explanation:

if we divide 357 by 7, we should have 51. meaning 357 chair divided in 7 rows, is 51 chairs per row.

After solving the given expression, the value obtained from it in form of simplest fraction is equal to 5.1/8.

Mathematical actions are called expressions if they have at least two terms that are related by an operator and include either numbers, variables, or both. Adding, subtraction, multiplying, and division are all reflection coefficient operations. A mathematical operation such as reduction, addition, multiplication, or division is used to integrate terms into an expression.

As per the given data in the question,

a = 7/8

b = -7/16

c = 0.8 and

d = 1/4

And the equation is a+b+cd

7/8 + (-7/16) + (0.8)(1/4)

7/16 + 0.2

= 10.2/16

In simplest form, it is written as 5.1/8.

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Answer:

Zoila bought a rectangular rug. The rug is 8 feet long by 5 feet wide. What is the area of the rug?

Final Answer: The area of the rug is 1.6[tex]ft^{2}[/tex] .

Step-by-step explanation:

What is Ask? - What is the area of the rug?

Given - 8 feet long by 5 feet wide

Operation - Divide

Solution:

You can use Partial quotient or Algorithm or Box method dividing any number.

5 ÷ 8 = 1.3

But why 1.6?

Because it is the decimal form of it and it is an improper fraction.

Final Answer: 1.6 [tex]ft^{2}[/tex] is the area of the rug.

Hope it helps

#LetStudy

Answer:

Step-by-step explanation:

According to segment addition postulate we have:

We are given:

Then substitute values into the first equation:

Find the length of AB:

Answer:

i dont know

Step-by-step explanation:

[tex]2 \frac{5}{6} - 2 \frac{1}{2} \\ = \frac{17}{6} - \frac{5}{2} \\ = \frac{17 - 15}{6} \\ = \frac{2}{6} \\ = \frac{1}{2} [/tex]

[tex] \frac{1}{2} [/tex]

Hope it helps.

Do comment if you have any query.

Answer:

Step-by-step explanation:

According to diagram we have:

Now:

Find the measure of angle H:

Answer:

75.4 to 1 decimal place

If you want an explanation comment on the answer.

Amy didn't include the negative sign for the 20, so she got an imaginary number.

Richard made it imaginary when he didn't need to. (there isn't a negative sign underneath the radical).

Answer:

The formula for calculating the area of a triangle

is 1/2 × b × h

Where, b = base

h = height

Hope it helps:)

$135.63 or Choice B

Step-by-step explanation:

If the worker works for 15.5 hours and earns $8.75 per hour, you would multiply 15.5 and 8.75, you get 135.625. Round it to the nearest hundredth gives you the answer of $135.62

To be a function each x value creates a different y value.

The x value in the problem is the same for each set but the y values are all different so it is not a function.

Answer: relation

Using the comparison given in the question, the value of 3*2 = 23

From the question given :

We can set up a comparison thus :

Here,

3*2

r*s = sr

Then

3*2 = 23

Therefore, the value of 3*2 = 23

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Answer:

I am confused with this ques there two of them gets the same ans

A and B has same value and

C and D has same value

are you supposed to choose two of. them?

however i got C= -40 , D = -40

Let me know if its incorrect :-)

Answer:

Step-by-step explanation:

slope are hard tbh

Answer:

[tex]11xy+4x^{2} t[/tex]

Step-by-step explanation:

1. Collect Like Terms

[tex](7xy+4xy)+(-x^{2} t+5x^{2} t)\\[/tex]

2. Simplify.

[tex]11xy+4x^{2} t[/tex]

Answer:

leave at  1:30 PM

Step-by-step explanation:

10 mph 40 hours 6600/1200 5.5 hr  40/15 2 hr 40 mins 5.5 -.5 =

After two hours there at the meeting place, the helicopter must depart at 1:30 pm to join the boat.

Speed is the rate an object travels in a predetermined period of time.

Its speed is expressed in km/h. 

As per the given information in the question,

If the boat goes to the station ,

Speed of the boat = 10mph

it will take 400/10 = 40 hours.

The helicopter has, 6600 lbs of fuel.

It will take 30 minutes to clean the fisherman and an additional hour to get enough fuel.

1.5 × 1200 = 1800 lbs of fuel.

So, the amount of fuel helicopter now has

6600 - 1800

= 4800 lbs of fuel.

This will allow it to fly for 4 hours as:

4800 lbs/1200 lbs per hour, It can only travel at 150 mph for two hours one way.

= 300 miles distance from the station.

The boat is available at 400 miles, and its maximum flight time at 150 mph is two hours going one way, which is 100 miles from where it is now,

So,

100/10 = 10 hours, the journey to the meeting location will take the boat ten hours.

To reach the boat, which will require 10 hours, the chopper must take off after 8 hours since it will take 2 hours.

So 8 hours of time from 5:30 am will be equal to 1:30 pm.

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Your question seems incomplete, probably the complete question is:

A crewman on a fishing boat was injured and needs to be treated in a hospital right away. You are with a Coast Guard station nearest to the boat, but you are 400 miles away. The boat travels at a rate of 10 mph. It is 5:30 A.M. You have a helicopter that can hold 6600 lbs. of fuel, consumes 1200 pounds of fuel an hour, and travels 150 mph. However, you need to save a minimum of 1 hour worth of fuel for landing problems at the Coast Guard station, and you need to have 30 minutes’ worth of fuel to remove the crewman from the boat. You have to create a plan for extracting the crew member. When would you leave and why? Fully explain your answer.

Answer: table 1 is 35 and table 2 is 1.301

Step-by-step explanation:

Answer:

x ≤ 13 2/5 and y ≥ 6 2/3

Step-by-step explanation:

system of equations would be:

x + y ≤ 20

5x + 8y ≥ 120

if you solve this system you get the answer above