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Ira Lisetskai [31]

3 years ago

6

Steve bought 14 music albums that cost $7.29 each, including tax. He handed the cashier a $100 dollar bill and was told he neede

d more money. How much more money does Steve need?

2 answers:

mina [271]3 years ago

8 0

$2.06.
7.29 x 100 = 102.06. 102.6 - 100 = $2.06.

den301095 [7]3 years ago

6 0

Answer:

more than 100 just kidding its 4.86$ have a great day

Step-by-step explanation:

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The heights in inches of males in the united states are believed to be approximately normally distributed with mean u the mean h

vovikov84 [41]

Answer:

Standard error = 0.83

Step-by-step explanation:

Given that the heights in inches of males in the united states are believed to be approximately normally distributed with mean u

Sample mean for 25 adults randomly taken =

$\bar x = 69.72$ inches

Std deviation of sample s = $4.15$ inches

Since X the height of males is Normal we find that the sample mean also will follow a normal distribution.

By central limit theorem, mean of x would be= sample mean= 69.72

Std error = $\frac{s}{\sqrt{n} } =\frac{4.15}{5} \\=0.83$

Standard error of the mean = std dev/square root of sample size.

Here only sample std deviation is known

So we used it

Standard error = 0.83

6 0

3 years ago

Whats 8+0.3 in standard form and word form

Rudik [331]

8 + 0.3 =

Standard . . . 8.3

Words . . . "eight and three tenths".

3 0

3 years ago

Read 2 more answers

7 ballons cost $9.1 what is the unit rate?

Morgarella [4.7K]

You have to divide
9.1\7 is 1.3
$1.30 per balloon

3 0

3 years ago

Which is bigger, half of 30 or one third of 75<br><br><br> please explain for brainlist

grin007 [14]

Half = 1/2
Third = 1/3

To find 1/2 of 30 we need to multiply them.
1/2 x 30 = 30/2 = 15

To find 1/3 of 75 we need to multiply them.
1/3 x 75 = 75/3 = 25

25 is bigger than 15

Answer:
1/3 of 75 is bigger

8 0

3 years ago

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Someone help !! Struggling with this one

Alex777 [14]

Answer:

$2\sqrt{10}-4\sqrt{2}$

Step-by-step explanation:

Evaluate:

$\int\limits^7_5 {\dfrac{1}{\sqrt{3+t}}} \, dt$

Rewrite it as

$\int\limits^7_5 {\dfrac{1}{(3+t)^{\frac{1}{2}}}} \, dt=\int\limits^7_5 {(3+t)^{-\frac{1}{2}}} \, dt$

Use rule

$\int\limits^a_b {(x+k)^n} \, dx=\dfrac{(b+k)^{n+1}}{n+1}-\dfrac{(a+k)^{n+1}}{n+1}$

Hence,

$\int\limits^7_5 {(3+t)^{-\frac{1}{2}}} \, dt=\dfrac{(7+3)^{-\frac{1}{2}+1}}{-\frac{1}{2}+1}-\dfrac{(5+3)^{-\frac{1}{2}+1}}{-\frac{1}{2}+1}=\\ \\=\dfrac{10^{\frac{1}{2}}}{\frac{1}{2}}-\dfrac{8^{\frac{1}{2}}}{\frac{1}{2}}=2\sqrt{10}-2\sqrt{8}=2\sqrt{10}-4\sqrt{2}$

5 0

3 years ago