3 years ago

Simplify 3.1n - 1.1n

Mathematics

1 answer:

Rus_ich [418]3 years ago

7 0

Answer:

Step-by-step explanation:

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I) Construct a triangle PQR such that |PQ|=8cm,{RPQ=90°{PQR=30°.Measure |RQ|

scoray [572]

Answer:

6.93 cm

Step-by-step explanation:

You have a right triangle (90°), so you do as follow:

If I understand correctly, you are looking for the hypotenuse so

$cos(30) = \frac{PQ}{QR} = \frac{8 cm}{QR}$

That is equal to $QR = cos(30)*8 cm = 6.928 cm$

5 0

3 years ago

A submarine sits at -300 meters in relation to sea level. Then it descends 115 meters. What is it’s new position in relation to

Anna71 [15]

Answer:

A. -415m

Step-by-step explanation:

-300 meters is the starting point.

Then, the submarine goes 115m further below the surface, which can be represented as -115.

Add -300 and -115 and you get -415m.

3 0

4 years ago

Which of the following is equivalent to (81m^6)^1/2?

ch4aika [34]

That would be option A
because square root of 81 is 9 and square root m^6 is m^3.

3 0

3 years ago

Read 2 more answers

What is the value of X?

joja [24]

Answer:

27 is ta value of x because.. first of all add allthose threee sides

3(x+2)+ 35+ 52=180(the sum of triangle)

or, 3x+6+35+52=180

or,3x=180-93

or,x=87/3

Therefore, the value of x is 29

Step-by-step explanation:

mark me as main brainliest please

4 0

2 years ago

X to the power of 2 subtract 3x for x=4

Helen [10]

First, X^2 while x is 4 =4^2, which is 4x4, which is 16
3X while x is 4 is 12. 16-12=4. So the answer is 4

6 0

3 years ago