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4 years ago

Write an expression that has three terms, two different variables, and one constant.

Mathematics

1 answer:

kenny6666 [7]4 years ago

4 0

4x + 6y = 30 can be an equation.

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Suppose you are planning to sample cat owners to determine the average number of cans of cat food they purchase monthly. The fol

Inga [223]

Answer: 10

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2$

Given : Significance level : $\alpha=1-0.99=0.1$

Critical z-value= $z_{\alpha/2}=2.576$

Margin of error : E=5

Standard deviation : $\sigma=6$

Now, the required sample size will be :_

$n=(\dfrac{(2.576)\ 6}{5})^2=9.55551744\approx10$

Hence, the final sample required to be of 10 .

6 0

4 years ago

Find the possible values of r in the inequality 5 > r – 3.

tekilochka [14]

B. r <8 because you ad 3 to both sides. it cancels out on the right side.

7 0

3 years ago

Read 2 more answers

On a map of my hometown, the

lina2011 [118]

Answer: 12.5 MI.

Why:

Put 1/5 and 2.5/x. Cross multiply the fractions to get...

x = 12.5

3 0

3 years ago

Read 2 more answers

Mrs. Abner randomly chooses one boy and one girl to participate in a spelling bee. The probability that Alex is chosen from the

Maslowich

Answer:

The probability of Alex and Jane getting picked is 0.0112 or 1.12

Step-by-step explanation:

Ok, so the probability that Alex is picked is 0.08, then in order for jane to be picked it is another 0.14.

That means that we must figure out what 14% of 0.08 is 0.0112

0.0112 = 1.12%

good luck mate!

-cheesetoasty

3 0

3 years ago

Delia has 3 5/8 yards of ribbon. About how many 1/4 yard-long pieces can she cut?

Maurinko [17]

Answer

$Find\ out\ how\ many\ \frac{1}{4}\ yard-long\ pieces\ can\ delia\ cut .$

To prove

$Let\ us\ assume\ that\ the \ \frac{1}{4}\ yards\ pieces\ cut\ be\ x.$

As given

$Delia\ has\ 3\frac{5}{8}\ yards\ of\ ribbon.$

i.e

$Delia\ has\ \frac{29}{8}\ yards\ of\ ribbon.$

Than the equation becomes

$\frac{29}{8} = \frac{x}{4}$

$\frac{29\times 4}{8} = x$

$\frac{29}{2} = x$

x = 14.5

$Therefore\ the \ \frac{1}{4}\ yards\ pieces\delia\ cut\ be\ 14 .$

5 0

4 years ago