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3 years ago

3 15/16÷2 1/4 what is the answer please

Mathematics

2 answers:

kakasveta [241]3 years ago

8 0

Answer:

3 15/16 ÷ 2 1/4 = 1 3/4

Answer in decimal form:

1.75

quester [9]3 years ago

6 0

Answer:

Step-by-step explanation:

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Select all the expressions that are equivalent to 15 – 5x.

Olin [163]

1)-5(x-3)= -5x+15
2) 3(5-x)= 15-3x
3) -5(3-x)= -15+5x
4)-3(-5+2x)+x=-5x+15
5)5(3-x)= 15-5x
Your answer would be 5) 5(3-x).

4 0

3 years ago

Read 2 more answers

A researcher draws a population of 40 adults from a city and administers an IQ test (which is known to have a population mean of

ra1l [238]

Answer: $(103.3515,\ 112.6485)$

Step-by-step explanation:

According to the given information, we have

n= 40

$\sigma=15\\\\\overline{x}=108$

Critical z-value for 95% confidence = $z_{\alpha/2}=1.96$

Confidence interval :

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=108\pm (1.96)\dfrac{15}{\sqrt{40}}\\\\\approx108\pm4.6485\\\\= (108-4.6485,\ 108+4.6485)\\\\=(103.3515,\ 112.6485)$

Hence, the 95 percent confidence interval for this result : $(103.3515,\ 112.6485)$

3 0

3 years ago

Amelie's dog weighs 47.17 pounds. Amelie's dog weighs 5.3 times as much as Evan's dog.

kupik [55]

Answer:

8.9 lb

Step-by-step explanation:

I divided 47.17 by 5.3

47.17÷5.3= 8.9

then to check my answer I multiplied 8.9 by 5.3 and got 47.17

hope this helps <3

4 0

3 years ago

Find the 9th term of the geometric sequence 10, 40, 160, ...

devlian [24]

The answer is 655,360

6 0

3 years ago

Evaluate each of the following. (a) P(11,5) (b) C(11,5) (a) P(11,5) = (Simplify your answer.) (b) C(11,5) = (Simplify your answe

Hunter-Best [27]

<h2>Answer:</h2>

(a) P(11,5)= 55440

(b) C(11,5)=462

<h2>Step-by-step explanation:</h2>

We know that the permutation is the number of ways of arranging r items out of a total of n items and is given by:

$P(n,r)=\dfrac{n!}{(n-r)!}$

and the combination is the number of ways of choosing r items out of a total of n items and is given by:

$C(n,r)=\dfrac{n!}{r!\times (n-r)!}$

(a)

P(11,5)

$P(11,5)=\dfrac{11!}{(11-5)!}\\\\P(11,5)=\dfrac{11!}{6!}\\\\P(11,5)=\dfrac{11\times 10\times 9\times 8\times 7\times 6!}{6!}\\\\P(11,5)=11\times 10\times 9\times 8\times 7\\\\P(11,5)=55440$

(b)

C(11,5)

$C(11,5)=\dfrac{11!}{5!\times (11-5)!}\\\\C(11,5)=\dfrac{11!}{5!\times 6!}\\\\C(11,5)=\dfrac{11\times 10\times 9\times 8\times 7\times 6!}{5\times 4\times 3\times 2\times 1\times 6!}\\\\C(11,5)=462$

8 0

3 years ago