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timofeeve [1]
3 years ago
5

The rainfall total this year was 10.2 inches, which is 20%less the last year’s rainfall total. What was last year’s rainfall tot

all
Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0
8.16 in
20% of 10.2 is 2.04
10.0-2.04 is 8.16 in
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A robot can complete up to 8 tasks in 5/6 hour. each task takes the same amount of time.
storchak [24]

\bf \begin{array}{ccll} tasks&hours\\ \cline{1-2}&\\ 8&\frac{5}{6}\\\\ 1&h \end{array}\implies \cfrac{8}{1}=\cfrac{~~\frac{5}{6}~~}{h}\implies 8=\cfrac{~~\frac{5}{6}~~}{\frac{h}{1}}\implies 8=\cfrac{5}{6}\cdot \cfrac{1}{h} \\\\\\ 8=\cfrac{5}{6h}\implies 48h=5\implies h=\cfrac{5}{48}\\\\[-0.35em] \rule{31em}{0.25pt}


\bf \begin{array}{ccll} tasks&hours\\ \cline{1-2}&\\ 8&\frac{5}{6}\\\\ t&1 \end{array}\implies \cfrac{8}{t}=\cfrac{~~\frac{5}{6}~~}{1}\implies \cfrac{8}{t}=\cfrac{5}{6}\implies 48=5t \\\\\\ \cfrac{48}{5}=t\implies 9\frac{3}{5}=t

7 0
3 years ago
Read 2 more answers
A) Find the area<br>B) Find the perimeter ​
Archy [21]

Answer:

A)

A1= 64

A2= 40

B)

P= 56(of whole shape)

Step-by-step explanation:

A squares area is a side squared so 8^2= 64, and it is also shown that a side of the square is the base of the parallelogram. The area of a parallelogram is b*h so (square side)(8) * height(5)= 40.

Since a parallelograms opposite sides are congruent, 8+8=16, and the other two sides need to be congruent and equal to 40-16(24), therefore the sides are both 12.

Then to calculate the perimeter just count up the side lengths, 8+8+8+12+8+12=56

4 0
3 years ago
Wich expression is equivalent to (3x^5+8x^3)-(7x^2-6x^3)
n200080 [17]
(3x^5 + 8x^3) - (7x^2 - 6x^3) = 3x^5 + 8x^3 - 7x^2 - 6x^3 = 3x^5 + 2x^3 - 7x^2
6 0
3 years ago
The length of a rectangle is x + 7 and the width is x. If the perimeter of the rectangle is 50, what is the width of the rectang
FromTheMoon [43]
The width (x) is 18. I wrote it out in case you need to show your work. Your welcome.

3 0
3 years ago
6x - 2y = 32 4x - 2y = 18​
Elis [28]

Answer:

x = 7

y = 5

Step-by-step explanation:

6x - 2y = 32

4x - 2y = 18

2x = 14

4x - 2y=18

x = 7

4 * 7 - 2y = 18

x = 7

28 - 2y = 18

x = 7

2y = 10

x = 7

y = 5

there is only 1 solution for this equation is (7;5)

Done :))

7 0
3 years ago
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