1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irina [24]
3 years ago
10

A cement mixture costs $33 a ton. It is composed of Grade A cement at $36 a ton and Grade B cement at

Mathematics
1 answer:
Inessa05 [86]3 years ago
4 0
If we used “a” tons of grade A and “b” tons of grade B we would get a + b tons of mixture.
Converting to costs we get 36a + 24b = 33(a + b)
36a + 24b = 33a + 33b
36a - 33a = 33b - 24b
3a = 9b
a = 3b
This means the mixture contains 3 times as much of grade A than grade B
The ratio of grade A : grade B = 3 : 1

For example if we mixed 3 tons of A with 1 ton of B we would get 4 tons of mixture
The cost would be 3 x 36 + 1 x 24 = 108 + 24 = $132 for 4 tons = $33 per ton
You might be interested in
A company that sells annuities must base the annual payout on the probability distribution of the length of life of the particip
Svetlanka [38]

Answer:

Step-by-step explanation:

Let X be length of life of the participants in the plan.

Given that X is N(68,3.5)

We convert this to standard normal score z using

z=\frac{x-68}{3.5}

a)  proportion of the plan recipients that would receive payments beyond age 75=P(X\geq 75) = P(Z\geq 2)\\= 0.025

b) proportion of the plan recipients die before they reach the standard retirement age of 65=P(X\leq 65) = P(z\leq -0.86)\\=0.5-0.2764\\=0.2236

c) x for 86% ceased

P(Z

5 0
3 years ago
Given the equation for the total surface area of a cylinder, solve for the height of the cylinder.
schepotkina [342]
H= (2pier^2)/ 2pier all subtracted by s so the last equation from the picture.
Hope it helps!
4 0
3 years ago
Read 2 more answers
Does 3 and the square roots of 8 and 17 form a right triangle
Gala2k [10]
If it’s is a right triangle then
A^2 + B^2 = C^2
3^2 + (square root of 8)^2 = 17^2

I don’t have a calculator but type that in and if it doesn’t equal 17^2 than the answer is no it doesn’t make a right triangle
4 0
3 years ago
Will mark bianleast
Leni [432]

Answer:

(–5, 5)

Step-by-step explanation:

Start with the x-axis (left and right).

-5 so you go to the left by 5 steps.

Next is y-axis (up and down).

Without moving your spot in -5, you move up by 5 steps.

That is point F.

Tip: (x-axis, y-axis) or (left/right, up/down)

Negative number: Left or Down

Positive number: Right or Up

8 0
3 years ago
How could you calculate each product? Describe the strategy you would use. Then calculate.
VashaNatasha [74]
Hey there!

1. To solve 9 x 5 , I could add the number 9 five times . . .

9 + 9 + 9 + 9 + 9 = 45

9 x 5 = 45 <----

2. I would use the same strategy as the first one, except add the number 8 five times . . .

8 + 8 + 8 + 8 + 8 = 40

8 x 5 = 40 <----

Hope this helps you.
Have a great day!
8 0
3 years ago
Other questions:
  • Find (f^-1)'(a):<br> f(x) = 3+x^2+tan(pi(x)/2), <br> -1
    13·1 answer
  • I need it as soon as possible plz!!!
    5·2 answers
  • Meredith drew the shape shown below. A rectangle placed horizontally atop another vertically placed one. The dimensions of the r
    11·1 answer
  • Your school raised 125% of its fundraising goal. The school raised $6750. What was the goal?
    15·1 answer
  • The price p of a pizza is $6.95 plus $.95for each topping t on thee pizza
    9·1 answer
  • Olivia filled 6 baskets of strawberries. Later she combined the fruit evenly into 3 larger boxes. If all 3 boxes sold for $42, h
    9·1 answer
  • B) Calcula el tiempo en minutos de un nadador que batio el récord mundial de las
    10·1 answer
  • 1) Fidel had 12 boxes of paper plates. Each box contains 36 paper plates. He used 173 paper plates for the birthday party of his
    14·1 answer
  • CAN YOU ANSWE QUESTION 1 and 2 please??
    12·1 answer
  • Round each number to the nearest ten and estimate the sum.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!