Whats the answer i have no idea and I'm really having a hard time
Answers
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What is the increase in the mean number of push-ups from last month to this month?
Please explain what you did and how you did it.
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Increase number in the mean number of push-ups from last month to this month is,
⇒ 7.5
What is mean by Subtraction?
Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.
Given that;
Mr. Anthony wants to know how some student athletes are improving in the number of push-ups they can do.
Hence, Mean of number of push-ups last month is,
⇒ 10 × 2 + 15 × 2 + 25 × 3 + 35 × 1 / 8
⇒ 160 / 8
⇒ 20
And, Mean of number of push-ups this month is,
⇒ 10 × 1 + 15 × 1 + 25 × 1 + 30 × 3 + 40 × 2 / 8
⇒ 220 / 8
⇒ 27.5
Hence, Increase number in the mean number of push-ups from last month to this month is,
⇒ 27.5 - 20
⇒ 7.5
Learn more about the subtraction visit:
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Both Diana and Becky ran the same distance with no one running more than the other.
Distance
Distance is the amount of space or length between two points. Distance is a scalar quantity with magnitude and no direction.
Diana ran quarter mile and Becky ran quarter mile, hence both Diana and Becky ran the same distance with no one running more than the other.
Find out more on distance at: brainly.com/question/17273444
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To solve this plug 4 in for x and 10 in for y like so...
5(4) - 2(10)
5 × 4 - 2 × 10
To solve this you must use the rules of PEMDAS (Parentheses, Exponent, Multiplication, Division, Addition, Subtraction)
We will skip the steps of parentheses and exponents since there are none in this expression
Now we will multiply. The only issue is that there are two sets of numbers to multiply. Which one will we multiply first? You will multiply first the set of numbers that come first when reading from left to right.
In this case you will first multiply 5 with 4
5 × 4 - 2 × 10
20 - 2 × 10
Next we will multiply -2 with 10
20 - 2 × 10
20 - 20
There is no division and addition in this expression so we will go on to subtraction:
20 - 20
= 0
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
0
Step-by-step explanation:
Given x = 4
y = 10
5x - 2y = 5(4) - 2(10)
= 20 - 20
= 0
Answers
Answer:
θ = 240
and
cos(θ) = -0.5
Step-by-step explanation:
Theta is in the third quadrant, that meansit goes from 180 to 270 degrees
Then,
cos^2 (θ) =1/4
cos (θ) = ± 1/2
θ = arccos(0.5)
θ = 60
But in the third quadrant
θ = 180 + 60 = 240
θ = 240
and
cos(θ) = -0.5
Answers
This has a lot of scary words and numbers in it, but it's all just fluff.
That big ugly formula is nothing but numbers, except for the 'h' in it
near the end. When you write your altitude in place of 'h' and push
all the numbers through your calculator, the answer is the air pressure
at that altitude.
All it's asking you to do is this:
-- Write ' 100 ' into the big formula.
-- Run all the numbers through the calculator and get the pressure at 100 meters.
-- Then write ' 1000 ' into the formula.
-- Run the whole thing through the calculator again, and see what
the pressure is at 1,000 meters.
-- Subtract, and see how much the pressure changed between 100 meters
and 1,000 meters.
You want to know what I think the whole idea is here ? I think the whole idea
is to get you to decide which things to do first as you calculate the formula,
AND to give you practice in using your calculator to do weird stuff.
In the formula, I see a power, a set of parentheses, two multiplications, and
one subtraction. You have to decide what order to do them in. And THEN,
you have to figure out how to do them all with your calculator.
Here's the order:
-- Inside the parentheses, multiply 2.25577x 10⁻⁵ by 'h' .
-- Inside the parentheses, subtract the result from ' 1 '.
-- Take the number inside the parentheses, and raise it to the 5.25588 power.
-- Then multiply the result by 101,325 .
For 100 meters altitude, the pressure you should get is 100,129 pascals.
Make sure you can get that with your calculator when you put '100' in place
of 'h'. And then, when THAT works, do it with 1,000 in place of 'h'.
The number you get for 1,000 meters should be about 10,254 pascals less.