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3 years ago

What is the area of this shape?

Mathematics

1 answer:

AlexFokin [52]3 years ago

5 0

Answer: 10

Step-by-step explanation:

You times 4 and 5 then you divide in half because it is a triangle

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Find sin, where the angle is shown Give the exact value, not a decimal approximation

olga_2 [115]

Answer:

sinΘ = $\frac{24}{25}$

Step-by-step explanation:

sinΘ = $\frac{opposite}{hypotenuse}$

The opposite is 24, but we require the hypotenuse h

Using Pythagoras' identity

h² = 7² + 24² = 49 + 576 = 625 ( take square root of both sides )

h = $\sqrt{625}$ = 25

Thus

sinΘ = $\frac{24}{25}$

6 0

3 years ago

Imagine the graph for the relation 4x-5y+20 = 0. What would be its slope?

muminat

4x - 5y + 20 = 0
 - 20 - 20
 4x - 5y = -20
4x - 4x - 5y = -20 - 4x
 -5y = -20 - 4x
 -5y = -4x - 20
 -5 -5
 y = ⁴/₅x + 4
The slope would be ⁴/₅.

4 0

4 years ago

Select the correct answer.

andrew-mc [135]

Answer:

$v=\sqrt{\frac{E}{m}}$

Step-by-step explanation:

The formula is given as:

$E=mv^2$

We need to solve this formula for v, that means that v to one side and let it be solved in terms of the other variables (E and m). First, we isolate v:

$E=mv^2\\\frac{E}{m}=\frac{mv^2}{m}\\\frac{E}{m}=v^2$

To isolate v, and eliminate the "square", we need to take square roots of both sides, that will give us v in terms of the other variables:

$\frac{E}{m}=v^2\\\sqrt{\frac{E}{m}}=\sqrt{v^2}\\\sqrt{\frac{E}{m}}=v$

Putting v to left side (convention), we finally have:

$v=\sqrt{\frac{E}{m}}$

7 0

3 years ago

Use the substitution method to solve the system of equations

Sergeeva-Olga [200]

Answer:

x=1/4

y = -2

(1/4, -2)

Step-by-step explanation:

4x -y =3

y =-8x

substitute y =-8x into the first equation. Everywhere you see y put 8x

4x -y =3

4x - (-8x) =3

4x+8x=3

combine like terms

12x = 3

divide by 12

12x/12x = 3 /12

x = 1/4

now we need to find y

y = -8x

y = -8 * 1/4

y = -2

8 0

3 years ago

What is the answer to 420 + 69 =

Gelneren [198K]

Answer:

420 + 69 = 489

Step-by-step explanation:

HOPE THIS HELPS

brainliest pls :)

8 0

3 years ago

Read 2 more answers