All categories

3 years ago

Solve for A in the literal question a/b=c.

Mathematics

1 answer:

Zepler [3.9K]3 years ago

4 0

Answer:

a=bc

Step-by-step explanation:

a/b=c

a=bc

You might be interested in

In one weekend, 2,400 people attend a play at the theater downtown. A survey of 150 people who attended found that 85 gave the p

insens350 [35]

Step-by-step explanation: 85 is 56.67 percent of 150

56.67 percent of 2,400 is 1360 so 1360 people gave the play at least 4 stars

3 0

3 years ago

You do a study of hypnotherapy to determine how effective it is in increasing the number of hours of sleep subjects get each nig

brilliants [131]

Answer:

Confidence interval

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$

And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

Step-by-step explanation:

For this case we have the followig dataset:

DATA: 8.2; 9.1; 7.7; 8.6; 6.9; 11.2; 10.1; 9.9; 8.9; 9.2; 7.5; 10.5

We can calculate the mean and the deviation with the following formulas:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

$s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$\bar X= 8.98[/tex[tex]s = 1.29$

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=12-1=11$

The Confidence level is 0.95 or 95%, the value of significance is $\alpha=0.05$ and $\alpha/2 =0.025$ , and the critical value would be $t_{\alpha/2}=2.20$

Repplacing the info we got:

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$ And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

7 0

3 years ago

Solve the triangle. A = 54°, b = 11, c = 8

Delicious77 [7]

In this problem, you apply principles in trigonometry. Since it is not mentioned, you will not assume that the triangle is a special triangle such as the right triangle. Hence, you cannot use Pythagorean formulas. The only equations you can use is the Law of Sines and Law of Cosines.

For finding side a, you can answer this easily by the Law of Cosines. The equation is

a2=b2 +c2 -2bccosA
a2 = 11^2 + 8^2 -2(11)(8)(cos54)
a2 = 81.55
a = √81.55
a = 9

Then, we use the Law of Sines to find angles B and C. The formula would be

a/sinA = b/sinB = c/sinC
9/sin54° = 11/sinB
B = 80.4°

9/sin54° = 8/sinC
C = 45.6°

The answer would be: a ≈ 9, C ≈ 45.6, B ≈ 80.4

5 0

3 years ago

A shopper purchased 4 boxes of sugar and 3 boxes of coffee for $40.75. Another shopper purchased 1 box of sugar and 4 boxes of c

kupik [55]

Answer:

bro creo que la respuesta es 15 ya que nose hablar tu idioma

espero te ayude está respuesta si no es esa

entonces es 20

Step-by-step explanation:

espero te ayude un poco esa respuestas

6 0

3 years ago

Plzz help with my test

Aleksandr [31]

Y = 4

when you look at the -3 at the x-axis, it meets 4 at the y-axis

5 0

3 years ago