What is 1/2 plus 9/10

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Answer 1

Answer: Find the common denominator first--> 10
1/2= ?/10 ?=5
so 5/10 +9/10 (Now you just add the numerators and keep the common denominator the same)

14/10 and if you want to simplify it, simply divide both the top and bottom by 2

answer = 7/5

Answer 2

Answer: 1.4. 1/2=.5 9/10=.9 add them together and u get 1.4

The measure of arc ABC is 283°.

Step-by-step explanation:

We know that the whole arc is equal to 360°, that means

$AC+AB+BC=360$

Where $AC=7y-7$ , $AB=4y+6$ and $BC=20y-11$ . Replacing these expressiones, we have

$7y-7+4y+6+20y-11=360\n31y-12=360\n31y=360+12\ny=(372)/(31)\ny=12$

But, arc ABC is defined by the sum of arcs AB and BC:

$ABC=AB+BC=4y+6+20y-11=24y-5=24(12)-5=283$

Therefore, the measure of arc ABC is 283°.

Answer:

Arc measure of ABC is 283°

Step-by-step explanation:

We know the total angle of the circle is 360°.

Therefore,

(20y - 11) + (4y +6) + (7y - 7) = 360°

Collecting like terms, we have:

20y + 4y + 7y = 360 + 7 - 6 + 11

31y = 372

Let's divide both sides by 31.

$(31y)/(31) = (372)/(31)$

y = 12

The arc measure of ABC is the sum of AB and BC. To find the arc measure of ABC, we have:

(4y +6) + (20y - 11)

Collecting like terms, we have:

4y + 20y + 6 - 11

24y - 5

Let's substitute 12 for y

24(12) - 5

288 - 5 = 283°

Arc measure of ABC is 283°

What are the solutions of the equation x4 – 5x2 – 14 = 0? Use factoring to solve.

Answers

We will use factoring: $x^(4) -5 x^(2) -14 = 0 \n x^(4) -7 x^(2) +2 x^(2) -14 =0 \n x^(2) ( x^(2) -7)+2( x^(2) -7)=0 \n ( x^(2) -7)( x^(2) +2)=0$
x² - 7 = 0
x² = 7
x = $√(7)$
or x= $-√(7)$
x² + 2 = 0
x² = - 2, this part of equation has no solutions.

Answer:

d on edge.

Step-by-step explanation:

Which statements are true?Choose exactly two answers that are correct.
Question 3 options:

4g^2 – g = g^2(4 – g)

9g^3 + 12 = 3(3g^3 + 4)

24g^4 + 18g^2 = 6g^2(4g^2 + 3g)

35g^5 – 25g^2 = 5g^2(7g^3 – 5)

Answers

Hello,

1) false
2)True
3)False 24g^4+18g²=6g²(4g²+3)
4)True

PLEASE HELP!!! 50 POINTS!! WILL GIVE BRAINLIEST!!!A person standing at the top of Mountain Everest would be approximately 5.5 mi high. The radius of earth is 3959 mi.

What is the distance to the horizon from this point?

Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth.
PLZ SHOW WORK!!!

Answers

Answer:

208.8 mi

Step-by-step explanation:

Form a triangle with the centre of the Earth (C) at one point, the horizon (H) as a second point, and the top of Mt. Everest (O) as the third (see diagram).

Let

r = Earth’s radius

h = height of Mt Everest

d = distance to horizon

∆CHO is a right triangle.

d² + r² = (r+h)²

d² + 3959² = (3959+5.5)²

d² + 15 673 681 = 3964.5²

d² + 15 673 681 = 15 717 260 Subtract 15 673 681 from each side

d² = 43 579 Take the square root of each side

d = 208.8 mi

The distance from the top of Mt Everest to the horizon is 208.8 mi.

Answer:

I JUST TOOK THE TEST THE ANSWER IS CORRECT.

Step-by-step explanation:

208.8

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What is 1/2 plus 9/10

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The measure of arc ABC is 283°.

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