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3 years ago

Lan is instructed to draw a rectangle with an area of 450 square centimeters.

Mathematics

2 answers:

aleksklad [387]3 years ago

6 0

Answer:

xy = 450

Step-by-step explanation:

aleksandrvk [35]3 years ago

4 0

Answer:

xy=450

Step-by-step explanation:

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Homework Progress

dolphi86 [110]

You go to the right of the angel then the numer there will be the answer 11cm

4 0

3 years ago

PLEASE HELP ME thank you answer needs to be in simplest radical form find d

sweet [91]

Answer:

$d=10$

Step-by-step explanation:

Pythagorean theorem:

$d^2+d^2=10\sqrt{2}^2,\\2d^2=200,\\d^2=100,\\d=\boxed{10}$

Alternative:

$\cos 45^{\circ}=\frac{d}{10\sqrt{2}},\\\frac{\sqrt{2}}{2}=\frac{d}{10\sqrt{2}},\\2d=10\sqrt{2}\cdot \sqrt{2},\\2d=20,\\d=\boxed{10}$

Alternative (derived from the Pythagorean theorem):

All 45-45-90 triangles have side lengths $x-x-x\sqrt{2}$ , where $x\sqrt{2}$ is the hypotenuse. Since this triangle's hypotenuse is $10\sqrt{2}$ , its sides are $10-10-10\sqrt{2}$ .

3 0

3 years ago

Read 2 more answers

Which equation shows the value of -2/5 - -9/15

Alika [10]

Answer:

D) 3/15

Step-by-step explanation:

(-2/5) - (-9/15) = (-6/15) - (-9/15) = (-6/15) + (9/15) = 3/15

6 0

3 years ago

42.5% of what is 20.57

aliina [53]

In math,
"of" is the same as "×" and "is" means "="

42.5% of x = 20.57
42.5% × x = 20.57
.425x = 20.57
x = 20.57/.425
x = 48.4

42.5% of 48.4 is 20.57

4 0

4 years ago

aksik [14]

Answer:

See below

Step-by-step explanation:

q = quarters value = .25 q

n = nickels = 4q value = .05 (4q)

summed = 12.60

.25q + .05(4q) = 12.60 <====== can be used to solve the problem

.45q = 12.60

q = 28 quarters then nickels = 4q = 112

8 0

2 years ago