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ludmilkaskok [199]
2 years ago
8

What is the product of −4 1/2 and 2 1/2?

Mathematics
2 answers:
UkoKoshka [18]2 years ago
6 0

Answer:

-11 \frac{1}{4}

Step-by-step explanation:

Convert both fractions to improper fraction then multiply together, THEN convert to mixed number.

xz_007 [3.2K]2 years ago
5 0
<h3>Solution:</h3>

- 4 \frac{1}{2}  \times 2 \frac{1}{2}  \\  =  \frac{ - 9}{2}  \times  \frac{5}{2}  \\  =  \frac{ - 45}{4}  \\  =  - 11 \frac{1}{4}

<h3>Hope it helps</h3>

ray4918 here to help

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In a sample of 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product,
Vadim26 [7]

Answer: 0.2872

Step-by-step explanation:

Given : In a sample of 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product, 260 of these people said they never did so.

i.e. n= 1000 and x= 260

⇒ Sample proportion : \hat{p}=\dfrac{260}{1000}=0.26

z-value for 95% confidence interval : z_c=1.960

Now, an upper confidence bound at the 95% confidence level for the true proportion of such consumers who never apply for a rebate. :-

\hat{p}+ z_c\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

=0.26+ (1.96)\sqrt{\dfrac{0.26(1-0.26)}{1000}}

=0.26+ (1.96)(0.01387)=0.26+0.0271852=0.2871852\approx0.2872

∴ An upper confidence bound at the 95% confidence level for the true proportion of such consumers who never apply for a rebate : 0.2872

7 0
3 years ago
Need help on this please
alexandr402 [8]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
A human heart beats an average of 80 beats per minute.How many beats is this in an hour?express your answer in scientific notati
nlexa [21]

Answer:

4,800

Step-by-step explanation:

Sorry I don't know how to explain it scientifically but I know how to do the calculations

1) Theres 60 minutes in an hour

2) 80x60= 4,800 beats

4 0
3 years ago
Does anyone know what the 5√2 (simplify radicals)?
maks197457 [2]

Answer:

  5√2 is as simple as it gets

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Step-by-step explanation:

One simplifies radical expressions by removing from under the radical any squares that might be there. 2 is a prime number, so has no square factors. The simplest form of this radical expression is the one given:

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Your calculator can tell you the value of this irrational number is about ...

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8 0
3 years ago
A pyramid has a base area of 44cm and a height of 12.6 cm what is the volume of the pyramid ?
aliya0001 [1]

Answer:

184.8 cubic cm

Step-by-step explanation:

The formula for the volume of a pyramid is

V = (1/3)(B)(h)      where B is the area of the base, and h is the height

We are given B = 44 cm² andh = 12.6cm  

Plug them into the formula and simplify...(I'm assuming you are allowed to use a calculator for these problems)

V = (1/3)(44cm²)(12.6cm)

<h2>     V = 184.8 cm³  or 184.8 cubic cm</h2><h2 />
7 0
4 years ago
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