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3 years ago

Find each percent of change. State whether the percent increase or decrease. Please show your work.

Mathematics

2 answers:

vodka [1.7K]3 years ago

8 0

A: 36.36%
B: 116.5%

Step by step

AlekseyPX3 years ago

7 0

The answer is is
A: 36.36%
B: 116.5%

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PLZZ HELPS

Irina-Kira [14]

Answer:

$1.16\:\mathrm{rad/s}$

Step-by-step explanation:

Angular speed is given by $\omega=\frac{\Delta \theta}{\Delta t}$ , where $\Delta \theta$ is angle change in radians and $\Delta t$ is elapsed time.

Since the baseball makes one fourth (one quarter) of a rotation in 1.35 seconds, it will take the baseball $4\cdot 1.35=5.4$ seconds to complete on rotation.

One rotation is 360 degrees or $2\pi$ radians. Therefore, the angular speed of the baseball is:

$\omega =\frac{2\pi}{5.4}=1.16355283466\approx \boxed{1.16\:\mathrm{rad/s}}$

5 0

3 years ago

There are some goats, cows and, sheep. 2/5 of the animals were goats. There were three times as many sheep than cows. If there w

kobusy [5.1K]

Answer:

81 sheep were there on the farm

Step-by-step explanation:

Consider the provided information.

Let x represents the number of goats.

y represents the number of cows.

z represents the number of sheep.

Therefore, the total number of animals are x+y+z

2/5 of the animals were goats. This can be written as:

$\frac{2}{5}(x+y+z)=x$

There were three times as many sheep than cows.

$z=3y$

There were 45 more goats than cows,

$x=45+y$

Substitute the value of x and z in equation 1.

$\frac{2}{5}(45+y+y+3y)=45+y$

$\frac{2}{5}(45+5y)=45+y$

$2(9+y)=45+y$

$18+2y=45+y$

$y=27$

Hence, there are 27 cows.

Substitute the value of y in $x=45+y$

$x=45+27$

$x=72$

Therefore, there are 72 goats.

Substitute the value of y in $z=3y$

$z=3(27)$

$z=81$

Thus, there are 81 sheep.

6 0

3 years ago

Help please asap!!!!

Digiron [165]

Answer:

-8a - 6b

Step-by-step explanation:

6a - 13b - 14a + 7b =

6a-14a = -8a

-13b + 7b = -6b

-8a - 6b

6 0

3 years ago

Calculate the density of benzene if 0.10L has a mass of 36.4g.

adelina 88 [10]

Answer:

$d=0.364\ g/cm^3$

Step-by-step explanation:

It is given that,

Mass of benzene, m = 0.1 L

Mass, m = 36.4 g

We know that, 1 L = 1000 cm³

0.1 L = 100 cm³

The density of an object is equal to its mass divided by its volume. So,

$\rho=\dfrac{m}{V}\\\\=\dfrac{36.4\ g}{100\ cm^3}\\\\=0.364\ g/cm^3$

So, the density of benzene is $0.364\ g/cm^3$ .

8 0

3 years ago

Susan designed a circular pool with a diameter of 25 meters.What is the area of the bottom of the pool? Round to the nearest ten

Phantasy [73]

PI r SQUARED SOUNDS LIKE AREA TO ME,
IF YOU NEED A CIRCUMFERENCE JUST USE PI d

You never heard that song? XD

So do Pi x the radius, squared (12.25^2)

-round to 1 decimal place(?)

4 0

3 years ago