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3 years ago

What is the answer to 7n-2(n+5)< 3n-16

2 answers:

6 0

<span>7n-2(n+5)< 3n-16 / -3n-16
7n-2(n+5)-3n+16<0
5n-3n-10+16<0
2n-10+16<0
2n+6<0 / -6
2n< -6 / :2
n< -6/2
n< -3
n</span>є(-∞:-3)

tino4ka555 [31]3 years ago

4 0

7n-2(n+5)< 3n-16
7n-2n+10<3n-16 Distribute the 2 into n+5
5n+10<3n-16 Subtract like figures
5n-3n+10<3n-3n-1 Subtract 3n from each side. (You want the variable on ONE side.)
2n+10-10<-16-10 Isolate the variable. Negative plus negative= bigger negative.
2n/2< -26/2 Negative divided by positive= smaller negative. Divide by 2 to isolate.
n<-13

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Can two obtuse angles be complementary

Norma-Jean [14]

Complementary angles are angles that add up to 90 degrees.

Obtuse angles are greater than 90 degrees, so there's no way
to add two of them together and get a sum that's smaller than
either one already is.

The answer to the question is 'No'.

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3 years ago

A basketball player completed 44.2% of his field goals in the most recent season. He made 287 field goals. How many did he att

Andrej [43]

44.2%= 287

Let the total attempt = x

(287/x) ×100 = 44.2

287/x = 44.2/100

287/x = 0.442

x = 287/0.442

Hope this will help...

5 0

3 years ago

In the pulley system shown in this figure, MQ = 30 mm, NP = 10 mm, and QP = 21 mm. Find MN.

ankoles [38]

<h2>Answer:</h2>

$\boxed{\overline{MN}=37.96}$

<h2>Step-by-step explanation:</h2>

For a better understanding of this problem, see the figure below. Our goal is to find $\overline{MN}$ . Since:

$\angle MRS=\angle MQP=90^{\circ} \\ \\ \overline{MQ}=\overline{MR}=30mm$

and $\overline{MN}$ is a common side both for ΔMRN and ΔMQN, then by SAS postulate, these two triangles are congruent and:

$\overline{RN}=\overline{QN}$

By Pythagorean theorem, for triangle NQP:

$\overline{QN}=\sqrt{\overline{NP}^2+\overline{QP}^2} \\ \\ \overline{QN}=\sqrt{10^2+21^2} \\ \\ \overline{QN}=\sqrt{541}$

Applying Pythagorean theorem again, but for triangle MQN:

$\overline{MN}=\sqrt{\overline{MQ}^2+\overline{QN}^2} \\ \\ \overline{MN}=\sqrt{30^2+(\sqrt{541})^2} \\ \\ \boxed{\overline{MN}=37.96}$

3 0

3 years ago

210 students were asked whether they want to go to a water park or a roller skating rink for a class party.

tankabanditka [31]

Answer: How many boys want to go skating

Step-by-step explanation: sorry if wrong but if you add 50 and 45 and 60 you get 155 that is not 210 so 2

7 0

3 years ago

Read 2 more answers

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a pers

tino4ka555 [31]

Answer:

19 situps

Step-by-step explanation:

Given that the regression equation to find a a relationship between hours of TV watched per day (x) and number of situps a person can do (y) was done.

The result was

y = ax+b

$y = -1.23x+22.738\\$

Correlation coefficient = 0.865

To predict the number of situps a person who watches 3 hours of TV

y = -1.23(3)+22.738

= 19.048

Approximately 19 situps.

6 0

3 years ago