All categories

2 years ago

Plz help with these questions

Mathematics

1 answer:

Hitman42 [59]2 years ago

7 0

Maybe try multiplying them

You might be interested in

How many pieces of gum are in 4 packages of gum?<br> 60<br> 75<br> 90<br> 180

soldi70 [24.7K]

Answer:

well that depends on how many pieces of gum are in one pack, once you have that info multiply it by 4.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

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

Find the missing value

pshichka [43]

- 8 + 6 = - 2

Step-by-step explanation:

-2 = [-8] + 6

<u>-TheUnknownScientist</u>

3 0

3 years ago

Which expression is equivalent to 3(6m)+m?<br> A)19m B)21m C)7m+3 D)18m+6m(with exponent 2)

julsineya [31]

A) 19m because 3 times 6 is 18 then you add m, which would be 19m

5 0

3 years ago

Find sales tax and the total cost. Round to merest cent <br><br>cost: $65 rate of sales tax: 6%

fgiga [73]

Answer:

sales tax = $3.9

total cost = $68.9

Step-by-step explanation:

tax = 65*0.06 = 3.9

total cost = 3.9 + 65 = 68.9

5 0

2 years ago