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Romashka [77]
3 years ago
15

Find the perimeter and area of rectangle ABCD.

Mathematics
1 answer:
iragen [17]3 years ago
3 0
Area = Length X Width
Perimeter = l(2) x W(2)
what are the measures of this rectangle?

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What number is 9.5% of 20?
mars1129 [50]
1.9


9.5% = 0.095

0.095* 20 = 1.9
7 0
3 years ago
Solve the matrix equation X-A=B for X if A= [8, -2, -3, 9, -1, 5] and B= [0, 7, 2 -3, -7, -1]
djverab [1.8K]

If <em>X</em> - <em>A</em> = <em>B</em>, then <em>X</em> = <em>A</em> + <em>B</em>. So

X = \begin{bmatrix}8&-2\\-3&9\\-1&5\end{bmatrix} + \begin{bmatrix}0&7\\2&-3\\-7&-1\end{bmatrix} \\\\ X = \begin{bmatrix}8+0&-2+7\\-3+2&9-3\\-1-7&5-1\end{bmatrix} \\\\ X = \begin{bmatrix}8&5\\-1&6\\-8&4\end{bmatrix}

3 0
3 years ago
Please help <br> thanksss
expeople1 [14]

Answer: y = -\frac{2}{3} x - 6

Step-by-step explanation:

The line crosses the y intercept at y = -6

The slope of the graph looks negative, as it extends from the top left quadrant to the bottom right quadrant.

A key trick is to use rise/run to figure out the slope:

Between each dot on the line, it rises 2 and runs -3 (negative because the direction is left).

So your equation would be: y = -\frac{2}{3} x - 6

7 0
4 years ago
A cube has a volume of 512 cm3.
BaLLatris [955]
Volume of cube is side power 3
therfore cubic root volume = side length
volume = 512 --> cubic root 512 =8 cm
side length is 8 cm if it was doubled
side length= 16 cm
therefore side length after doubling =
side power 3
(16) to the power 3 = 4096 cm3
8 0
4 years ago
Find the missing side of a right triangle a b c
iren2701 [21]

Answer:

Use Pythagorean Theorem.

Step-by-step explanation:

To find any side of a right angled triangle, we use Pythagorean Theorem. It states that the square of hypotenuse is equal to the sum of squares of it's sides.

Let hypotenuse is a

Perpendicular is b

and base is c

According to the theorem:

a²= b² + c²

Add values and solve for the unknown variable / side.

If you had added the problem, I would have elaborated more but still this will help you out.

5 0
3 years ago
Read 2 more answers
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