2 years ago

Can someone please help me ?!

Mathematics

1 answer:

Elina [12.6K]2 years ago

5 0

Answer:

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Step-by-step explanation:

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Solve 8w – 3r = 45 for r

bogdanovich [222]

<span>8w – 3r = 45
3r = 8w - 45
r = 8w/3 - 15
hope it helps</span>

7 0

3 years ago

Im am not sure how to do this but I wanna say it’s C

kumpel [21]

Answer:

The answer is A which is 5/16

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=71%20-%205x%20%3D%209x%20-%2013" id="TexFormula1" title="71 - 5x = 9x - 13" alt="71 - 5x = 9x

Sav [38]

You need to isolate x.

71 - 5x = 9x - 13

Add 13 to both sides.

84 - 5x = 9x

Add 5x to both sides.

84 = 14x

Divide both sides by 14.

6 = x

<h3>The answer is x = 6.</h3>

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3 years ago

A volleyball player sets the ball in the air, and the height of the ball after t seconds is given in feet by h= -16^2+12t+6. A t

JulsSmile [24]

h=-16²+12t+6

8=-256+12t+6

256-6+8=12t

-258=12t

t=-258/12

t=21.5

7 0

3 years ago

A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan

Mademuasel [1]

Answer: $H_0:\mu=40$

$H_0:\neq40$

Step-by-step explanation:

A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
An alternative hypothesis says that there is a statistical significance between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. $\mu=40$ , since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

$\mu\neq40$

⇒ Null Hypothesis : $H_0:\mu=40$

Alternative hypothesis : $H_0:\neq40$

5 0

2 years ago