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3 years ago

I think it’s c but I need help

Mathematics

2 answers:

Oksana_A [137]3 years ago

4 0

Answer:

x = 12

Step-by-step explanation:

In a right triangle (a triangle that has a ninety degree angle in it) the the square of the side opposite the right angle is always equal to the sum of the squares of the other two sides. Therefore, we can use the information we are given to figure out the missing side:

$15^2=225\\9^2=81\\225-81=144\\\sqrt[2]{144}=12$

stepan [7]3 years ago

4 0

Good evening

Answer:

D. x = 12

Step-by-step explanation:

Since this a right triangle we can apply the Pythagorean theorem

then

x = √(15² - 9²) = √144 = 12

_________

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Fed [463]

Answer:pretty sure 1 is 23 and 2 is 211200

Step-by-step explanation:

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2 years ago

3. A balancing balloon toy is in the shape of a hemisphere (half-sphere) attached to the base of a cone. If the toy is 4ft tall

Katen [24]

Answer:

The volume of the toy is $V=5.23\ ft^3$

Step-by-step explanation:

step 1

Find the volume of the hemisphere

The volume of the hemisphere is given by the formula

$V=\frac{2}{3}\pi r^{3}$

In this problem, the wide of the toy is equal to the diameter of the hemisphere

$D=2\ ft$

$r=2/2=1\ ft$ ----> the radius is half the diameter

substitute

$V=\frac{2}{3} \pi (1)^{3}=\frac{2}{3} \pi\ ft^3$

step 2

Find the volume of the cone

The volume of the cone is given by

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

we know that

The radius of the cone is the same that the radius of the hemisphere

$r=1\ ft$

The height of the cone is equal to subtract the radius of the hemisphere from the height of the toy

$h=4-1=3\ ft$

substitute the given values

$V=\frac{1}{3}\pi (1)^{2}(3)=\pi\ ft^3$

step 3

Find the volume of the toy

we know that

The volume of the toy, is equal to the volume of the cone plus the volume of the hemisphere.

$V=(\frac{2}{3} \pi+\pi)\ ft^3$

$V=(\frac{5}{3}\pi)\ ft^3$

assume

$\pi=3.14$

$V=\frac{5}{3}(3.14)=5.23\ ft^3$

5 0

4 years ago

Find the midpoint between (-1, -1) and (-9,6).?

ryzh [129]

Answer:

(-5,-3.5) is the midpoint

Step-by-step explanation:

See photo for the step-by-step explanation

7 0

3 years ago

Read 2 more answers

Multiply (25xy^3)(4xy)(x^2y^2)=

Inessa05 [86]

Answer:

$100x^{4}y^{6}$

Step-by-step explanation:

$(25xy^{3} )(4xy)(x^{2}y^{2})$

Remove parenthesis:

$25xy^{3}*4xyx^{2}y^{2}$

Separate the constants:

$(25*4)xxx^{2}y^{3}yy^{2}$

Simplify:

$100x^{1+1+2}y^{3+1+2}$

$100x^{4}y^{6}$

6 0

3 years ago

Can someone help me understand how to do multi-step inequalities please??

tangare [24]

Answer:

In the last two sections, we considered very simple inequalities which required one-step to obtain the solution. However, most inequalities require several steps to arrive at the solution. As with solving equations, we must use the order of operations to find the correct solution. In addition remember that when we multiply or divide the inequality by a negative number the direction of the inequality changes.

The general procedure for solving multi-step inequalities is as follows.

Clear parenthesis on both sides of the inequality and collect like terms.

Add or subtract terms so the variable is on one side and the constant is on the other side of the inequality sign.

Multiply and divide by whatever constants are attached to the variable. Remember to change the direction of the inequality if you multiply or divide by a negative number.

Step-by-step explanation:

8 0

3 years ago