Choose the comparison that is shown on the meter stick.

Maya reads that 0.63 of Oak School is female and 0.47 of Elm School is female. She says that Oak School must have more females.

-BARSIC- [3]

Answer:

No not correct

Step-by-step explanation:

We are given information that Maya came to know that 0.63 pf Pal school is female and 0.47 of Elm school is female.

Without knowing the total number of students in each school, we cannot conclude that 0.63 is greater than 0.47

For example, say number of students in Oak school be 100, and in Elm school be 200

Females in Oak school = 0.63(100) =63

Females in Elm school = 0.47(200) = 94

We find that there are more females in Elm school

So with the information given, we cannot conclude she is correct , there are chances for her being wrong also.

4 0

3 years ago

Find the approximate side length of a square game board with an area of 105 in2.

aleksley [76]

Answer:

Rounded to the nearest inch: 10

Rounded to the nearest tenth: 10.2

Rounded to the nearest hundredth: 10.25

Step-by-step explanation:

To find the area of a square, we multiply the side length by itself, or in other words, SQUARE the side length!

$A=s^2$

We are given the area, so plugging that into our equation looks like this:

$105=s^2$

To eliminate the exponent, take the square root of both sides of the equation!

$\sqrt{105}=s$

From here, there are a few paths to take, depending on what your teacher is looking for. I will evaluate the approximate of the square root by finding the nearest perfect squares.

The nearest perfect square less than √105 is √100, and the nearest perfect square greater than √105 is √121.

105 is closer to 100 than to 121, so √105 is closer to √100.

√100 is equal to 10, so the √105 is approximately 10 inches!

Using a calculator to check:

$\sqrt{105}=10.247$ inches

8 0

1 year ago

You are situated 300 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building

nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

$h=\sqrt{x^2+y^2}$

The rate of change for the distance between you and the elevator is given by:

$\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}$

$-16=\frac{dh}{dy}*\frac{dy}{dt}$

$\frac{dh}{dy}=\frac{d}{dy} (\sqrt{x^2+y^2})\\$

Applying the chain rule:

$u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}$

Therefore, at x=300 and y = 500, dy/dt is:

$-16=\frac{y}{\sqrt {(x^2+y^2)}}*\frac{dy}{dt}\\-16=\frac{500}{\sqrt {(300^2+500^2)}}*\frac{dy}{dt}\\\frac{dy}{dt}=-18.66\ ft/s$

The elevator is descending at 18.66 ft/s.

7 0

3 years ago

Please help!!! I will mark someone brainliest!

valina [46]

Answer:

a = 8, b = $\frac{3}{2}$

Step-by-step explanation:

Given the exponential function

f(x) = a $b^{x}$

To find a and b use the given coordinate points on the graph

Using (0, 8 ), then

8 = a $b^{0}$ [ $b^{0}$ = 1 ] , then

a = 8

f(x) = 8 $b^{x}$

Using (2, 18 ) , then

18 = 8b² ( divide both sides by 8 )

$\frac{18}{8}$ = b² , that is

b² = $\frac{9}{4}$ ( take the square root of both sides )

b = $\sqrt{\frac{9}{4} }$ = $\frac{3}{2}$

Thus

f(x) = 8 $(\frac{3}{2}) ^{x}$

3 0

2 years ago

The table below represents the height of a bird above the ground during flight, with p(t) representing height in feet and t repr

ddd [48]

Answer:

3.23

Step-by-step explanation:

6.26+6+3.41=15.67

15.67/7=3.23

I have mentioned time 7 sec from 3 to9

8 0

3 years ago

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