Answer:
81
Step-by-step explanation:
Let's do this systematically:
Four numbers: a, b, c, d
Whose mean is 85:
Whose largest number is 97:
Lets solve for the other numbers:
a+b+c+97 = 85*4 = 340
340 - 97 = 243
a+b+c = 243
at this point it doesn't matter what the numbers are, they just need to add up to 243.
We can do 243÷3=81, which is our answer
1.)
Old Number:35
New Number:45
Now, subract the new number(45) from the old number. (35)
45-35 is 10. Now divide the old number (35) by 10.
You'll get 3.5. 3.5%, increase is the answer for #1.
2.) Old: s (students)
New: 36,750
Do 100+5 (Addition because we do not know what the old number is.) 100+5 is 105. Move decimal over twice and you get 1.05. Multiply 36,750 by 1.05.
There were 38,587.5 kids last year.
3.)Since the discount is 15% off, do 100-15=85. Now, move the decimal over from the percent, and that makes that .85. Now multiply 50x.85. You get 42.5, or $42.50. Now the coupon is 10%, So subtract 100-10, giving you 90. Now move the decimal over. .90. Multiply 42.5 (or 42.50) by .90. You get 38.25. You do have enough money.
4.) Subtract 100-15, giving you 85. Move decimal over from percent. .85.
Now you would multiply .85 times k. B should be the answer.
First you need to subtract the 2 over to the left side:
4=a/4
Then, multiply both sides by 4 in order to get the 4 on the right to cancel out of the denominator:
16=a
Given: The coordinate of R,S,T is (2,3), (4,4) and (5,0) respectively.
To find: Where we need to find the length of each side of the triangle RST
The slope of each side of the triangle RST.
and classify the triangle.
Solution:
Part A:
length of RS=
Length of ST=
Length of TR=
Part B:
Slope of RS=
Slope of ST=
Slope of TR=
Part C:
As all the side length of this triangle are unequal so this triangle is scalene.
Answer:
2 5/12
Step-by-step explanation:
You have to add 1 3/4 and 2/3 together. You find the common denominator, 12, and convert the fractions. 1 3/4 becomes 1 9/12 and 2/3 becomes 8/12. 1 9/12 + 8/12 is 1 17/12. 1 17/12 simplified is 2 5/12.