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Paul [167]
2 years ago
10

A farmer has a tractor with a length of 25 ft. If his grandson has a 1:8 scale replica pedal tractor, what is the length of the

toy tractor?
Mathematics
1 answer:
Andrei [34K]2 years ago
5 0

The length of the toy tractor is 3.125ft

Data Given;

  • length = 25ft
  • ratio = 1:8

To solve this question, we need to find the length of the tractor using ratios.

<h3>What is Ratio</h3>

This is the proportion of a substance to the entire value of that substance.

If the length of the tractor is 25 ft, then the length of the toy tractor can be found when we divide 25 by 8.

l = 25/8 = 3.125ft

The length of the toy tractor is 3.125ft.

Learn more on ratio here;

brainly.com/question/1781657

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Read the ques
Dafna11 [192]

Answer:

0.25feet

Step-by-step explanation:

The equation is not well written. Let the equation of the height be modelled as;

h = -16d²+8d+4

The velocity of the ball is zero at its maximum height.

Velocity = change in displacement/time

v = dh/dd

Differentiate

v = -32d+8

Since dh/dd = v = 0

0 = -32d+8

Add 32d to both sides

0+32d = 8

32d = 8

Divide both sides by 32

32d/32 = 8/32

d = 1/4

d = 0.25feet

Hence the maximum height of the tennis ball is 0.25feet

Note that the modeled equation was assumed. You can apply the same calculation to any equation given

3 0
3 years ago
A manager must select three coders from her group to write three different software projects. There are 7 junior and 3 senior co
gavmur [86]

Answer:

The total number of ways are 168.

Step-by-step explanation:

Consider the provided information.

There are 7 junior and 3 senior coders in her group.

The first project can be written by any of the coders. The second project must be written by a senior person and the third project must be written by a junior person.

For second project we have 3 choices and for third project we have 7 choices.

Now there are 2 possible case:

Case I: If first and second coder is senior, then the total number of ways are:

3\times 2\times 7=42

Case II: If first and third coder is junior, then the total number of ways are:

7\times 3\times 6=126

Hence, the total number of ways are: 42+126=168

6 0
3 years ago
Algebra expressions for 1/4 <br> the amount of salt
Salsk061 [2.6K]

Answer:

1/4 x

Step-by-step explanation:

I think this because you don't know the amount of salt so that would be labeled x.

6 0
3 years ago
Read 2 more answers
please help! i'll mark brainliest if correct! Use the second image attached to answer the question! HELP ASAP
Jobisdone [24]
The right answer is c have a nice day
6 0
2 years ago
A study was conducted to compare the proportion of drivers in Boston and New York who wore seat belts while driving. Data were c
allochka39001 [22]

Answer:

a) The test statistic is z = -2.51

b) The pvalue is 0.0060.

Step-by-step explanation:

Question a:

Ha: pB < pNY

This means that the alternate hypothesis is rewritten as:

H_a: p_{B} - p_{NY} < 0

While the null hypothesis is:

H_0: p_{B} - p_{NY} = 0

The test statistic is:

z = \frac{X - \mu}{s}

In which X is the sample mean, \mu is the value tested at the null hypothesis and s is the standard error

pB = 0.581, pNY = 0.832

This means that X = 0.581 - 0.832 = -0.251

0 is tested at the null hypothesis:

This means that \mu = 0

Standard error = 0.1

This means that s = 0.1

Test statistic:

z = \frac{X - \mu}{s}

z = \frac{-0.251 - 0}{0.1}

z = -2.51

The test statistic is z = -2.51

Question b:

The pvalue is the probability of finding a proportion less than -0.251, that is, a difference of at least 0.251, which is the pvalue of Z = -2.51.

Looking at the z-table, Z = -2.51 has a pvalue of 0.0060

The pvalue is 0.0060.

5 0
3 years ago
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