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3 years ago

Please help me with this as soon as possible

Mathematics

1 answer:

Viktor [21]3 years ago

6 0

Answer:

x ≈ 6.1

Step-by-step explanation:

Using the sine ratio in the right triangle

sin50° = $\frac{opposite}{hypotenuse}$ = $\frac{x}{8}$ ( multiply both sides by 8 )

8 × sin50° = x , then

x ≈ 6.1 ( to 1 dec. place )

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Plssssssssss help me plsss and thxxxxxxxx

mamaluj [8]

Answer:

B) 264 units²

Step-by-step explanation:

Figure 1:

A = 1/2BH

A = 1/2 12(4)

A = 1/2 48

A = 24

Figure 2:

24 - 4 = 20

20 x 12 = 240

Total area:

240 + 24 = 264

7 0

3 years ago

The figure is made up of a cylinder and a cone. What is the volume of the composite figure? Use 3.14 for Pi. Round to the neares

Delvig [45]

Answer:

The volume of figure is 310.86 cm³

Step-by-step explanation:

First, you have to calculate the volume of cone and cylinder seperately by applying the formulas :

Cone,

$v = \frac{1}{3} \times \pi \times {r}^{2} \times h$

$let \: \pi = 3.14 \\ let \: r = 3 \\ let \: h = 9$

$v = \frac{1}{3} \times 3.14 \times {3}^{2} \times 9$

$v = 84.78 \: {cm}^{3}$

Cylinder,

$v = \pi \times {r}^{2} \times h$

$let \: \pi = 3.14 \\ let \: r = 3 \\ let \: h = 8$

$v = 3.14 \times {3}^{2} \times 8$

$v = 226.08 \: {cm}^{3}$

Next, you have to add up both volumes as the figure are made from cone and cylinder :

$v = 84.78 + 226.08$

$v = 310.86 \: {cm}^{3}$

3 0

3 years ago

Solve: (x-2)(x-3)=(x+1)(x+2)<br><br> Select the appropriate response:<br> A)0.5<br> B)5.0

Sauron [17]

Answer:

Step-by-step explanation:

Let's FOIL out both sides and then see where we are after that:

$x^2-5x+6=x^2+3x+2$

Let's combine like terms now and get everything on one side of the equals sign and set the polynomial equal to 0 to solve for x:

0 = 8x - 4 and we can factor out a 4 to give us:

0 = 4(2x - 1)

Either 4 = 0 or 2x - 1 = 0. Well it's obvious that 4 does not equal 0, so 2x-1 must equal 0. Then

2x = 1 so

x = 1/2 or choice A on the left.

3 0

3 years ago

Read 2 more answers

At what point will the line y=x intersects the unit circle x^2+y^2=1?

katrin [286]

Answer:

(0.707,0.707) and (-0.707, -0.707)

Step-by-step explanation:

use a calculator

5 0

3 years ago

Solve for x. Show your work.

puteri [66]

So, these are actually pretty simple once you learn the equality used to solve for "x" and when to implement this method. You can use this equality to solve for a segment "x" anytime that two secant lines cutting through a circle come from the same point outside the circle.

Secant: by geometric definition is just a straight line that cuts a curve into multiple pieces.

I did one of them for you hopefully you can use my work for "a" to help you solve for "b". For a. I got x=7.

6 0

4 years ago