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3 years ago

What’s the correct answer I need a correct answer ASAP!!!!!

Mathematics

1 answer:

Illusion [34]3 years ago

5 0

Answer:

the first answer

3 1/3 that's the correct answer

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Please help me on this problem !

Rashid [163]

Answer:

x = 5 , y = 5 $\sqrt{3}$

Step-by-step explanation:

Using the sine and cosine ratios in the right triangle and exact values.

sin30° = $\frac{1}{2}$ , cos30° = $\frac{\sqrt{3} }{2}$ , then

sin30°= $\frac{opposite}{hypotenuse}$ = $\frac{x}{10}$ = $\frac{1}{2}$ ( cross- multiply )

2x = 10 ( divide both sides by 2 )

x = 5

and

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{y}{10}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

2y = 10 $\sqrt{3}$ ( divide both sides by 2 )

y = 5 $\sqrt{3}$

8 0

2 years ago

Find the slope of a line through the points (-1,-9) and (4,-2).

sveticcg [70]

The answer is 7/5

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

5 0

3 years ago

Read 2 more answers

A published report of a repeated-measures research study includes the following description of the statistical analysis. "The re

balandron [24]

Answer:

3 treatment conditions were compared in the study.

14 individuals participated in the study.

Step-by-step explanation:

Consider the provided information.

Part (A) How many treatment conditions were compared in the study?

There are two sets of degrees of freedom; one for the numerator and one for the denominator.

F ratio is defined as: $df=(df_{\text{Between treatment}}, df_{error})$

The formula for between treatment is: $df_{\text{Between treatment}}=k-1$

Substitute $df_{\text{Between treatment}}=2$ in above formula.

$2=k-1$

$k=3$

Therefore, 3 treatment conditions were compared in the study.

Part (B) How many individuals participated in the study?

The error degree of freedom is $df_{error}=(k-1)(n-1)$

Substitute $df_{error}=26$ and k=3 in above formula.

$26=(3-1)(n-1)$

$26=2(n-1)$

$14=n$

Hence, 14 individuals participated in the study.

3 0

3 years ago

3x + 5 ^ 2x + 15

Nina [5.8K]

Answer:

Answer:is A

A) Molly walked 5 miles and Mary walked 15 miles last month. If Molly walks 3 miles per week and Mary walks 2 miles per week, how long will it be before Molly has walked more miles than Mary?

Step-by-step explanation:

An inequality can have more than one solution. The set of all solutions of an inequality is called the solution set. The symbol ≥/ means “is not greater than or equal to.”

6 0

3 years ago

Find the area of this parallelogram

eduard

Area is base x height
4x2=8 cm

3 0

2 years ago