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3 years ago

The present shown below is a cube. Find the surface area of the present.

Mathematics

2 answers:

Kruka [31]3 years ago

3 0

To answer this you need to multiply 20 by 20. this gives 400cm
or you can also square 20

olga2289 [7]3 years ago

3 0

^ their answer is true , they told you everything you need to solve it

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What is the proper way to write the phone number in scientific notation

dusya [7]

1.43 x 10^7. Scientific notation moves the decimal to express the answer in a single whole digit. The exponent becomes 10^7, because you moved the decimal one place to the left, so you add 1 to your original exponent of 10^6.

8 0

3 years ago

Can someone help me find sin 0

Murljashka [212]

Answer:15/8

Step-by-step explanation:

4 0

4 years ago

A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground. How high is the top o

DochEvi [55]

Answer:

The height of tree house is 70.71 feet

Step-by-step explanation:

We are given that A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground

Refer the attached figure

Length of rope AC = Hypotenuse =100 feet

The top of a tree house to the ground forms a 45∘ angle of elevation from the ground = $\angle ACB = 45^{\circ}$

We are supposed to find the height of tree house i.e.AB = Perpendicular

So, Using trigonometric ratio

$Sin \theta = \frac{perpendicular}{Hypotenuse}\\Sin 45= \frac{AB}{AC}\\\frac{1}{\sqrt{2}}=\frac{AB}{100}\\100 \times \frac{1}{\sqrt{2}}=AB\\70.71=AB$

Hence The height of tree house is 70.71 feet

8 0

4 years ago

find the standard form of equation of a line perpendicular to 4X plus 5Y equals 40 that includes the point -10, -3

Olin [163]

The answer is -4x plus 8 1/2

4 0

3 years ago

I have no idea just please helppp ☺️

podryga [215]

Answer:

x = 0

Step-by-step explanation:

2x - 6 + 9 ; -6 + 9 = 3

2x + 3= 3x + 3 + x

3x plus x = 4x

2x + 3 = 4x + 3

x = 0

8 0

4 years ago