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3 years ago

Find A if B = 50° and α + β = 100°

Mathematics

1 answer:

goldenfox [79]3 years ago

5 0

Answer:

A=30

Step-by-step explanation:

We know through the Angle Sum Property of A Triangle that

all its angles add up to 180 degrees

Hence, A + (a+b) +B= 180

A+100+50=180

A+150=180

A=30

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Kim has a bag with 4 blue marble, 4 black marble, 7 orange marbles, 2 red marbles, 6 yellow marbles, and 1 pink marble.

poizon [28]

This does not make sense, but with the logic, it would be B. Please comment to clarify so I can make changes if needed.

ANSWER: B

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3 years ago

What is the factored form of x^2-x-2?

ipn [44]

Answer:

$(x+1)(x-2)$

Step-by-step explanation:

You can factor this by grouping.

$x^2-x-2$

$\left(x^2+x\right)+\left(-2x-2\right)$

$x\left(x+1\right)-2\left(x+1\right)$

$\left(x+1\right)\left(x-2\right)$

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3 years ago

I run 8.8 feet per second. How far is this in miles per hour?

Eduardwww [97]

5.8 mph because 8.5ft/sec=8.5*3600/5280

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3 years ago

Read 2 more answers

A parabola passes through the points (-2,8), (0,2), and (1,5). What function does the graph represent?

zheka24 [161]

ANSWER

$y = 2 {x}^{2} + x + 2$

EXPLANATION

Let the function that represent the graph be:

$y = a {x}^{2} + bx + c$

The parabola passes through the points (-2,8), (0,2), and (1,5).

These points must satisfy the function.

For (-2,8), we have

$8= a{( - 2)}^{2} + b( - 2) + c$

This implies that that,

$4a - 2b + c = 8...(1)$

For (0,2), we have,

$2= a{( 0)}^{2} + b( 0) + c$

This implies that,

$c = 2$

For (1,5), we have

$5= a{( 1)}^{2} + b( 1) + c$

This implies that,

$a + b + c = 5...(2)$

Put c=2 into equation (1) and (2).

$4a - 2b + 2 = 8$

$4a - 2b = 8 - 2$

$4a - 2b = 6$

$2a - b = 3...(3)$

$a + b + 2=5$

$a + b =5 - 2$

$a + b = 3...(4)$

Add equation (3) and equation (4)

$3a = 6$

$a = 2$

Put a=2 into equation (4).

$2 + b = 3$

$b = 3 - 2 = 1$

Therefore the function is

$y = 2 {x}^{2} + x + 2$

5 0

4 years ago

Item 18 You and your friend gather 56 apples. You gather 29 apples. Let a be the number of apples your friend gathers. Write an

Thepotemich [5.8K]

Answer:

56=29+a

Step-by-step explanation:

So 2 people gathered apples. That means there will be 3 numbers in the equation you are trying to make.

One number will be the amount of apples you gathered.

(as said, 29)

One number will be the amount of apples your friend gathered.

(you do not know this, so it will be a variable)

The last number will be the amount of apples you AND your friend gathered.

(as said, 56)

Since 56 is the amount of apples you and your friend gathered, its is equal to both other numbers combined.

to say that 56 is equal to both your apples and your friend's apples, you would say:

56 = 29 + a

(a is the variable)

To use this equation to find a, you would subtract 29 from both sides. It should look like:

27 = a

7 0

4 years ago