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2 years ago

You want to buy a pet iguana. You already have $12 and plan to save$9 per week.

Mathematics

2 answers:

aleksandrvk [35]2 years ago

4 0

Answer:

5 weeks

Step-by-step explanation:

alex41 [277]2 years ago

4 0

Answer:

4 weeks

9×x+12=48

Step-by-step explanation:

4×9=36+12=48

6×9=54+12=66

You might be interested in

The measure of angle A to the nearest tenth of a degree is: A 18.5 B 19.5 C 20.5

Andrew [12]

Answer:

Step-by-step explanation:

This is a right triangle as shown by the right angle.

The side opposite the right angle is the hypotenuse, which is 9.
The side opposite angle A is 3.

So we have the opposite of A and the hypotenuse.

The trigonometric ratio that relates opposite side to hypotenuse is SINE.

$sin\theta=\frac{opposite}{hypotenuse}$

Since, we need angle A, $\theta$ is A, opposite side is 3, and hypotenuse is 9, we substitute:

$sinA=\frac{3}{9}\\sinA=\frac{1}{3}$

To solve for the angle, we use our calculator and find the inverse sin of $\frac{1}{3}$ :

$A=sin^{-1}(\frac{1}{3})\\A=19.47$

Rounding to nearest tenth of a degree:

$A=19.5$

B is the right choice.

6 0

3 years ago

Simplify (7/2a)*(5/a^2)

anyanavicka [17]

Answer:

Go look on M a t h w a y

Step-by-step explanation:

M A t h w a y

3 0

2 years ago

Identifique el valor atípico en la siguiente lista. Luego encuentre la media y la mediana de la lista con y sin el valor atípico

Tju [1.3M]

Translate to English and I can help u, if I were to give u a answer it would be -8.5 based on the stuff given

3 0

2 years ago

The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c

ivanzaharov [21]

Answer:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma= 500$ represent the population standard deviation

n represent the sample size

Solution to the problem

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The confidence2 level is 98% or 0.98 then the significance level would be $\alpha=1-0.98=0.02$ and $\alpha/2=0.01$ , the critical value for this case would be $z_{\alpha/2}=2.326$ , replacing into formula (b) we got:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

8 0

3 years ago

Kimmy’s savings account has a balance of $76.23 in June. By September, her balance is 5 times as much as her June balance. Betwe

Elden [556K]

Kimmy’s balance in December will be $486.98.

Explanation:
76.23 x 5 = 381.15
The balance is $381.15 in September.
381.15 + 87.83 = 468.98
The balance In December is $486.98.

5 0

3 years ago