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Leto [7]
3 years ago
8

Anyone get this please help me

Mathematics
1 answer:
marin [14]3 years ago
5 0

Answer:

AOB = -8x + 68

Step-by-step explanation:

AOC = 40°

BOC = 8x - 28

Angle Addition Theorem:

AOB + BOC = AOC

AOB + (8x - 28) = 40

AOB + (8x - 28) + 28 = 40 + 28

AOB + 8x - 8x = 68 - 8x

AOB = -8x + 68

AOB + BOC = AOC

(-8x + 68) + (8x - 28) = 40

-8x + 8x + 68 - 28 =40

0x + 40 = 40

40 = 40

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Identify the linear graph.
jenyasd209 [6]

The answer is: The second one. Why?


Because, when it's a linear graph, the slope of the graph cannot change.


And that's the only graph that fits the criteria


Hope this helped! c:

5 0
3 years ago
Read 2 more answers
What is the sum of 20x^2-10x-30
ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

<u><em>The correct question is</em></u>

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

ax^{2} +bx+c=0

The sum of the roots is equal to

-\frac{b} {a}

in this problem we have

20x^{2} -10x-30=0  

so

a=20\\b=-10\\c=-30

substitute

-\frac{(-10)} {20}=0.5

<u><em>Verify</em></u>

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

a=20\\b=-10\\c=-30

substitute

x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}

x=\frac{10\pm\sqrt{2,500}} {40}

x=\frac{10\pm50} {40}

x=\frac{10+50} {40}=1.5

x=\frac{10-50} {40}=-1

The roots are x=-1 and x=1.5

The sum of the roots are

-1+1.5=0.5 ----> is ok

5 0
3 years ago
The student council at Livingston High School is making T-shirts to sell for a fundraiser, at a price of $16 apiece. The costs,
Allushta [10]

Answer:

5 shirts must be sold.

Step-by-step explanation:

First, set up the equation. Each shirt (x) is sold for $16:

For every amount (y) for x: (y)(x) = (16)(y)

The cost is $4, with the setup fee as $60.

(16)(y) = (4)(y) + 60

16y = 4y + 60

Isolate the variable (y). Note the equal sign, what you do to one side, you do to the other. First, subtract 4y from both sides.

16y (-4y) = 4y (-4y) + 60

16y - 4y = 60

12y = 60

Next, isolate the variable (y). Divide 12 from both sides.

(12y)/12 = (60)/12

y = 60/12

y = 5

5 shirts must be sold.

To check, plug in 5 for y in the equation:

16y = 4y + 60

16(5) = 4(5) + 60

Simplify.

16(5) = 4(5) + 60

80 = 4(5) + 60

80 = 20 + 60

80 = 80 (True).

~


7 0
3 years ago
Juanita is making bread. She needs 3 1/2 cups of flour. Juanita only has 1/4 measuring cup. How many cups of flour will Juanita
jekas [21]

Answer:

if she uses a 1/4 measuring cup she would need to get 14 1/4 cups of flour

Step-by-step explanation:

7 0
3 years ago
Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown
Butoxors [25]

i'm 85% certain the answer is C. Fiona is not correct because the coin will definitely land in the white area .

8 0
3 years ago
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