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3 years ago

Please answer this multiple choice question for 23 points and brainliest!!

Mathematics

1 answer:

luda_lava [24]3 years ago

5 0

Answer:

A. T = 20°C - (2.8°C/h × 4h)

Step-by-step explanation:

The rate of change of temperature (-2.8°C/h) is multiplied by time (4h) to get the change in temperature (-11.2°C). That change is added to the initial temperature (20°C) to find the temperature after 4 hours.

Only equation A properly expresses this calculation.

In choice B, the rate of change is (wrongly) shown as +2.8°C/h. In the other choices, the combinations of units are nonsense. (What is a °C·h?)

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NS SECTION ONE<br>In the number 416.98, which digit has the greatest value

Aneli [31]

the 4 because it's in the hundred place value

I THINK THAT"S HOW YOU DO IT, BUT YOU KNOW JUST TRYING TO HELP YOU :)

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3 years ago

Which statement describes a compromise the

deff fn [24]

Answer:

Step-by-step explanation:

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3 years ago

I need help with Algebra 2a

Ugo [173]

Answer:

Step-by-step explanation:

Summation means that you are adding together all the numbers that result from putting in the numbers 5-11 for i:

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4 years ago

A change purse contains an equal number of pennies, nickels, and dimes. the total value of the coins is 512 cents. how many coin

sammy [17]

Let

x---------> the total number of coins

we know that

512 cents-------> is equal to $5.12

1 penny is equal to $0.01

1 nickel is equal to 5 penny--------> $0.05

1 dime is equal to 2 nickel--------> $0.10

$\frac{x}{3}*0.01+ \frac{x}{3}*0.05+\frac{x}{3}*0.10=5.12$

$\frac{x}{3}*[0.01+0.05+0.1]=5.12 \\\\x*[0.16]=15.36 \\\\ x=\frac{15.36}{0.16} \\\\x= 96\ coins$

the total number of coins are 96

Divide 96 by 3 to obtain the number of coins of each type

therefore

<u>the answer is</u>

the number of penny coins are $32$

the number of nickel coins are $32$

the number of dimes coins are $32$

6 0

3 years ago

In scientific notation, 130,000,000 + 17,000,000 = ?

Illusion [34]

Answer: 1.47 * 10^8

Step-by-step explanation:

First, let's add in standard form to avoid confusion

130,000,000

+17,000,000

------------------------

147,000,000

Since scientific notation expects the 1st base to be greater than 1 but less than 10, 147,000,000's first base in SCI notation should be 1.47.

Now to complete: 1.47 * 10^8

Hope this helps, please consider making me Brainliest.

8 0

1 year ago