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3 years ago

7

16. Sarina throws a ball up into the air, and it falls on the ground nearby. The ball's height, in feet, is modeled by the funct

ion 10--2-1.3, where I represents time in seconds. What's the height of the ball when
Sarina throws it?
A. 3 feet
B. 1 foot
C. 2 feet
D. 4 feet

1 answer:

tia_tia [17]3 years ago

7 0

Answer:

Step-by-step explanation:

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The length, in millimeters of each side of a square shaped electronic chip is a rational number. What statement is true about th

AVprozaik [17]

Answer:

The diagonal is irrational because it is a product of a rational and an irrational number

Step-by-step explanation:

The options are not given. However, the question is still answerable.

Given

Shape: Square

Length: Rational

Since the side length is said to be rational, I'll answer the question based on whether the diagonal is rational or not.

Having said that:

The diagonal (d) of a square with side length (l) is calculated using Pythagoras theorem.

$d^2 = l^2 + l^2$

$d^2 = 2l^2$

Take positive square root of both sides

$d = \sqrt{2l^2}$

Split:

$d = \sqrt{2} * \sqrt{l^2}$

$d = \sqrt{2} *l$

Recall that the side length (l) is rational.

However, $\sqrt 2$ is irrational.

So, the product of l and $\sqrt 2$ will be irrational

Hence:

The diagonal is irrational

8 0

3 years ago

Luden [163]

Answer:

7.5 km ggggggggggg ghhk

5 0

2 years ago

Mike and Jun Wen were practicing the long jump during track practice. Mike jumped 9.5 feet. Jun Wen jumped 11.75 feet. How much

andriy [413]

2.25 feet. 11.75 - 9.5 = 2.25.

3 0

3 years ago

Read 2 more answers

There are 15 red, 14 green, and 9 yellow balls in a dark room. What is the minimum number of balls that Alicia needs to take so

Tems11 [23]

Answer:

32

Step-by-step explanation:

1. If you take 12 balls, 9 could be yellow and 3 could be red. We want at least 12 of the same color, so 30 balls isn't a good minimum

2. If you take 30 balls, 9 could be yellow, 10 could be red and 11 could be green. We want at least 12 of the same color, so 30 balls isn't a good minimum.

3. If you take 31 balls, 9 could be yellow, 11 could be red and 11 could be green. We want at least 12 of the same color, so 31 balls isn't a good minimum.

4. If you take 32 balls, 9 could be yellow, 11 could be red and 12 could be green or 9 could be yellow, 12 could be red and 11 could be green or 7 could be yellow, 13 could be red and 12 could be green or 9 could be yellow, 11 could be red and 12 could be green.

We want at least 12 of the same color, and we have it from the different samples of the 4th trial.

So, 32 balls is the minimum number of balls

8 0

3 years ago

A tree 8m tall costs a shadow 10m long.How tall is the tree on the same ground level that costs a shadow 40m long at the same ti

andreev551 [17]

Answer:

32m tall

Step-by-step explanation:

10m=8m

40m=x

x=8*40/10

x=32 m

3 0

3 years ago