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Radda [10]
2 years ago
8

If one side of a square is increase by 10 units, the area of the rectangle formed is 3 times the area of the square. Find the ar

ea of the rectangle.
Mathematics
1 answer:
Oksanka [162]2 years ago
3 0

Answer:

75 square units

Step-by-step explanation:

(x+10)x=3x^2

x^2+10x=3x^2

10x=2x^2

5x=x^2

x=5

Plugging in 5 into either of the initial equations yields the answer.

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PLS PLS PLS HELP ME ILL GIVE 20 points.
lisov135 [29]

Answer:

if you want to know the x is.

Step-by-step explanation:

(180°-4x)+(180°-6x)+2x=180°

x=22.5°

8 0
2 years ago
Fifteen seventh graders were randomly selected to see how many pushups in a row they could do. Their data are shown. a. b. 45, 4
GuDViN [60]

Answer: Median = 42

Mean = 43.8

Step-by-step explanation:

When we have a data set of n points {x₁, x₂, ..., xₙ}

The mean is written as:

(x₁ + ... + xₙ)/N

And the median will be the value in the middle of the data set.

So first, let's write our data set in order, from least to greatest.

{36, 36, 38, 40, 40, 40, 42, 42, 43, 45, 45, 48, 48, 70}

So we have 14 values.

The middle value will be at:

(n + 1)/2

(14 + 1)/2 = 7.5

Now, counting from the left, we have that the 7.5th value is 42. (the 7th value is 42, and the 8th value is 42)

So the median is 42.

Now the mean:

M = (36 + 36 +38 +40+40+40+ 42 +42 + 43 + 45 + 45 + 48 + 48 + 70)/14

M = 43.8

8 0
3 years ago
32 (23 + 4),
Alchen [17]

Answer:

Its neither the only value im getting is 864

3 0
3 years ago
Read 2 more answers
Find the unkown angle of a triangle​
REY [17]

Step-by-step explanation:

Find

Triangle A(because there are two triangles)

take 28°+39°=67°

an angle is 180° in total so you take

180°-67°=113°

Angle x = 113°

Angle y = 67°

Triangle B

64°+67° = 131°

180°-131°=49°

Angle z =49°

6 0
3 years ago
Show work please!!!!! HELPPPP
scoundrel [369]
If you would like to find the volume here:

L•W•H

Big Rectangular: 10•14•6
Small Rectangular: 1•2•3


Surface Area:

2(L•W) + 2(L•H) + 2(W•H)

Big Rectangular: 2(10•14) + 2(10•6) + 2(14•6)
Small Rectangular: 2(1•2) + 2(1•3) + 2(2•3)
7 0
2 years ago
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