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3 years ago

Pls help me guys, I’d really appreciate it

Mathematics

1 answer:

trapecia [35]3 years ago

8 0

Answer:

∠ PQR = 70°

Step-by-step explanation:

The tangent- tangent angle PQR is half the difference of the intercepted arcs.

minor arc PR = 360° - 250° = 110°

Then

∠ PQR = $\frac{1}{2}$ (250 - 110)° = $\frac{1}{2}$ × 140° = 70°

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How do I solve 2x-3y=12 step by step?

anzhelika [568]

Answer:

Step-by-step explanation: •Subtract 2x from both sides of the equation.

-3y = 12 - 2x

•Divide each term by -3y = 12 - 2x by -3.

-3y/-3 = 12/-3 + -2x/-3

•Cancel the common factor of -3.

12/-3 + -2x/-3

•Divide y by 1.

y = 12/-3 + -2x/-3

•Simplify each term.

•Divide 12 by -3.

y = -4 + -2x/-3

•Dividing two negatives values results in a positive value.

y = -4 + 2x/3

4 0

3 years ago

A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground. How high is the top o

DochEvi [55]

Answer:

The height of tree house is 70.71 feet

Step-by-step explanation:

We are given that A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground

Refer the attached figure

Length of rope AC = Hypotenuse =100 feet

The top of a tree house to the ground forms a 45∘ angle of elevation from the ground = $\angle ACB = 45^{\circ}$

We are supposed to find the height of tree house i.e.AB = Perpendicular

So, Using trigonometric ratio

$Sin \theta = \frac{perpendicular}{Hypotenuse}\\Sin 45= \frac{AB}{AC}\\\frac{1}{\sqrt{2}}=\frac{AB}{100}\\100 \times \frac{1}{\sqrt{2}}=AB\\70.71=AB$

Hence The height of tree house is 70.71 feet

8 0

3 years ago

23/50 of Zanders friends prefer to stay home on Friday night what percent of Xander's friends prefer to stay home on Friday nigh

koban [17]

Answer:

46% of Xander's friends prefer to stay home on Friday nights.

Step-by-step explanation:

Formula

$Percentage = \frac{Part\ value\times 100}{Total\ value}$

As given

$\frac{23}{50}\ of\ Zanders\ friends\ prefer\ to\ stay\ home\ on\ Friday\ night.$

i.e

Zanders friends prefer to stay home on Friday night = 23

Total numbers of Zanders friends are 50.

Part value = 23

Total value = 50

Put in the formula

$Percentage = \frac{23\times 100}{50}$

$Percentage = \frac{2300}{50}$

Percentage = 46%

Therefore 46% of Xander's friends prefer to stay home on Friday nights.

3 0

3 years ago

Could someone help me PLZZZZ

Fudgin [204]

Answer:

mmmm

Step-by-step explanation:

ummmm

7 0

3 years ago

Will somebody please help me

Whitepunk [10]

Answer:

9n-3

Step-by-step explanation:

Let's set up an expression:

2n-1-(-7n+2)

Now we simplify the expression

2n-1+7n-2

Combine like terms

9n-3

5 0

3 years ago