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3 years ago

if fred can blow up 20 balloons up in 15 minutes then how many balloons can fred blow up in 6 minutes

Mathematics

2 answers:

Gala2k [10]3 years ago

8 0

Answer:

The Answer is 8

Step-by-step explanation:

Hello,

The answer to the question is 8, let me explain why.

1. we know how many balloons Fred can blow up in 15 minutes

Fred can blow up 20 balloons in 15 minutes.

2. we need to find out how many balloons Fred can blow up in 1 minute.

To solve this we just divide 20 by 15

20 ÷ 15 = 1.3 (repeated)

3. Finally we multiply the answer by 6

This will give us the answer of 8

because 1.3 × 6 = 8

Hope I could help, Hope it was easy to understand as well.

- Nova

enyata [817]3 years ago

4 0

Answer:

Step-by-step explanation:

have a good day

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Can someone plz help me out

Shkiper50 [21]

2.false. This is so as 3 to 4 or 3/4=0.75 while 4 to 3 is 1.333333333333333 infinite.

7 0

3 years ago

How do you compare 7/8 ___ 15/16 ?

solong [7]

Answer:

7/8 < 15/16

Step-by-step explanation:

Get a common denominator of 16

7/8 *2/2

14/16

14/16 < 15/16

so 7/8 < 15/16

3 0

3 years ago

Read 2 more answers

Find the area of each shape by decomposing each shape into rectangle and/or triangle.

avanturin [10]

Remark

You don't have to decompose the second one, and it is better if you don't. Just find the area as you probably did: use the formula for a trapezoid. You have to assume that the 6cm line hits the 2 bases at right angles for each of them, otherwise, you don't know the height. So I'm going to assume that we are in agreement about the second one.

Problem One

The answer for this one has to be broken down and unfortunately, you answer is not right for the total area, although you might get 52 for the triangle. Let's check that out.

Triangle

Area = 1/2 * b * h

base = 16 cm

h = 10 - 4 = 6

Area = 1/2 * 16 * 6

Area = 48

Area of the Rectangle

Area = L * W

L = 16

W = 4

Area = L * W

Area = 16 * 4

Area = 64

Total Area

Area = 64 + 48

Area = 112 of both figures <<<< Answer

3 0

3 years ago

A random sample of 144 recent donations at a certain blood bank reveals that 81 were type A blood. Does this suggest that the ac

Reptile [31]

Answer:

Null hypothesis: $p=0.4$

Alternative hypothesis: $p \neq 0.4$

$z=\frac{0.5625 -0.4}{\sqrt{\frac{0.4(1-0.4)}{144}}}=3.98$

$p_v =2*P(z>3.98)=0.0000689$

Since the p value is very low compared to the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true percent of people with type A of blood is significantly different from 0.4 or 40%

Step-by-step explanation:

Information given

n=144 represent the random sample taken

X=81 represent the number of people with type A blood

$\hat p=\frac{81}{144}=0.5625$ estimated proportion of people with type A blood

$p_o=0.4$ is the value that we want to verify

$\alpha=0.01$ represent the significance level

z would represent the statistic

$p_v{/tex} represent the p value Hypothesis to testWe want to test if the percentage of the population having type A blood is different from 40%.: Null hypothesis:[tex]p=0.4$

Alternative hypothesis: $p \neq 0.4$

the statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.5625 -0.4}{\sqrt{\frac{0.4(1-0.4)}{144}}}=3.98$

Now we can calculate the p value with this probability taking in count the alternative hypothesis:

$p_v =2*P(z>3.98)=0.0000689$

3 0

3 years ago

Can someone help me

jeka57 [31]

OK SURE WHAT IS IT? SO I CAN ANSWER YOUR QUEST.?

5 0

3 years ago

if fred can blow up 20 balloons up in 15 minutes then how many balloons can fred blow up in 6 minutes ​

if fred can blow up 20 balloons up in 15 minutes then how many balloons can fred blow up in 6 minutes