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yulyashka [42]
1 year ago
11

A retaining wall requires 36.8 cu yd of concrete. The combined amounts of cement, sand, and gavel should be 1 1/2 times the of c

oncrete needed. What total amount of cement, sand, and gavel will be required?
Mathematics
1 answer:
svet-max [94.6K]1 year ago
7 0

Using proportions, it is found that the total amount of cement, sand, and gavel required is of 55.2 cubic yards.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

The decimal equivalent to the mixed number 1 1/2 is given by:

1 + 1/2 = 1 + 0.5 = 1.5.

1.5 times 36.8 cubic yards is:

1.5 x 36.8 = 55.2.

The total amount of cement, sand, and gavel required is of 55.2 cubic yards.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

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A square is a quadrilateral with four equal sides and four 90 degree angles. Is quadrilateral ABCD a square?
Rainbow [258]

Answer: yes

Step-by-step explanation:

4 0
2 years ago
5/8 - 3/10 <br> A. 13/40 <br> B. 1/20 <br> C. 1/4<br> D. 1/5
densk [106]

5/8 - 3/10

Find the common denominator:

Multiples of 8:  8, 16, 24, 32, 40 (8 x 5 = 40)

Multiples of 10: 10, 20, 30, 40  (10 x 4 = 40)


5/8 = 5*5 / 8*5 = 25/40

3/10 = 3*4 / 10 *4 = 12/40


Now you have 25/40 - 12/40

25 -12 = 13

Answer = 13/40


The answer is A.

7 0
2 years ago
Read 2 more answers
We are interested in the dimensions of a certain rectangle. this rectangle has length twice the side of the square and width thr
Mila [183]
Area of square = s^2
Area of Rectangle = lw
l = 2s

w+3 = s
solve for w, w=s-3
Now we have l and w.
Plug both into area of rectangle formula so: (2s)(s-3)
Since both areas are equal set both equations equal to each other:
(2s)(s-3)=s^2
Now simplify
2s^2-6s=s^2
s^2-6s=0, Solve for s.
Factor polynomial. s(s-6)=0 , s can be equal to 0 or 6. HOWEVER, you cannot have a side length of 0 therefore the side length has to be 6.
Now plug in s for the length formula for the rectangle:
l = 2s so... l = 2(6) so length of rectangle = 12.
Now plug in s for the width formula for the rectangle:
w+3=s so... w+3=6 so width of rectangle = 3.
Now the dimensions of the rectangle are 12 by 3. 12 being length and 3 width.
To CHECK:
Find area of rectangle:
A=lw so A=3 times 12 so A=36
Find area of square:
We know the side is equal to 6 so
A=s^2 so 6^2 = 36
The areas are equal that verifies the answer of 12 by 3.
8 0
3 years ago
Can someone help me with this pls, is super important
Alex17521 [72]
X = 50 degrees
y = 50 degrees

Explanation:

x + 130 = 180 (Angles between parallel lines)
x = 50

y = x = 50 (Corresponding angles)
7 0
2 years ago
P( not the Ace of clubs?​
galben [10]
Where is the question? Are you playing solitaire
7 0
3 years ago
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