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-BARSIC- [3]
3 years ago
13

How much is a 10% tip on a $25 bill

Mathematics
2 answers:
lara31 [8.8K]3 years ago
5 0

Answer:

$2.50

Step-by-step explanation:

tip percentage x bill = tip in $ form.

0.10 x 25= $2.50

s344n2d4d5 [400]3 years ago
3 0

Answer:

$2.50.

Step-by-step explanation:

10 percent of 25 is 2.5.

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Which sequence of transformations will change figure PQRS to figure P′Q′R′S′?
alexandr402 [8]

I think it is the third one. If it’s not the third one then it’s the first one.

6 0
3 years ago
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A quarterback throws a football to a teammate. The football is 6.5ft above the ground when it leaves the quarterback's hand. His
Elena-2011 [213]

Answer:

v=5.42m/s

Step-by-Step Explanation:

We can use conservation of energy to solve this  

mgh=1/2mv^2

2gh=v^2

v=sqrt(2gh)

v=sqrt[2*9.8m/s^2*(6.5-5)]

v=5.42m/s

7 0
3 years ago
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In a study of parents' perceptions of their children's size, researchers asked parents to estimate their youngest child's height
tatyana61 [14]

Answer:

Test statistic t=6.505

P-value=0

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that parents tend to underestimate their youngest child's size.

Then, the null and alternative hypothesis are:

H_0: \mu=0\\\\H_a:\mu> 0

The significance level is assumed to be 0.05.

The sample has a size n=39.

The sample mean is M=7.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.2.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7.2}{\sqrt{39}}=1.153

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{7.5-0}{1.153}=\dfrac{7.5}{1.153}=6.505

The degrees of freedom for this sample size are:

df=n-1=39-1=38

This test is a right-tailed test, with 38 degrees of freedom and t=6.505, so the P-value for this test is calculated as (using a t-table):

P-value=P(t>6.505)=0

As the P-value (0) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is  enough evidence to support the claim that parents tend to underestimate their youngest child's size.

5 0
3 years ago
340 over 8 as a unit rate
Anastasy [175]
340/8 = 42.50 per unit
4 0
3 years ago
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Blease need help w/ ratios
ankoles [38]

Answer:

24:30 or 4:5 once reduced

Step-by-step explanation:

You just take the number of the first thing its asking for & the second thing.

You can also write the ratio as a fraction or use 'to" to separate the numbers.

Hope this helps!

6 0
3 years ago
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