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3 years ago

What figure is comprised of two rays that share a common endpoint called a vertex?

1 answer:

4 0

<span>The answer is B. Angle. In order to form an angle two rays must meet at an endpoint called a vertex and lie in a plane. Appropriately, the word angle comes from the Greek word for corner. Generally speaking there are three types of angles; acute, obtuse, and straight angles.</span>

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Trevor tutors French for $12 an hour and scoops ice cream for $8 an hour. He is going to work 20 hours this week. At least how m

sineoko [7]

Hours He will work in this Week=20 hours.

Number of Hours he will Teach=x

Number of Hours He will Eat icecream=y

We know

x+y=20

x=20-y (Equation 1)

Teaching French=$12

Eating Icecream=$8

Let He Total Money he Earn from Teaching.

=12×Number of Hours he work

=$12x

Eating Icecream=$8

Total money spent=$8y

But Total Money=$190

MEANS

$12x+$8y=$190

12(20-y)+8y=190

240-12y+8y=190

-4y=190-240

-4y=-50

y=50/4

y=12.5

We know x+y=20

x+12.5=20

x=20-12.5

x=7.5 hours

MEANS He have to teach At least =7.5 hours.To make $190

$\boxed{\mathbf{He\:have\:to\:teach=7.5\:hours}}$

8 0

4 years ago

Help me with this math homework

sp2606 [1]

Answer:

1.) 2 over 5

2.)7.5 over 50

3.)1 1/2

5.)0.95%

6.)2.5%

7.)0.94

i cant read 9 and ten

11.)61 over 100

12.)7 over 25

13.)207 over 1000

15.)14 over 25

16.)13 over 50

17.)3 over 500

19.)5 over 8

20.)42 over 125

21.)3 over 250

I tried my best!! hope this helps you out

5 0

4 years ago

According to Descartes's rule of sign, how many possible positive and negative roots are there for the equation

damaskus [11]

<h2>Descartes Rule of Sign</h2><h3>Answer:</h3>

There are $3$ Real Roots for the Equation

<h3>Step-by-step explanation:</h3>

According to Descartes Rule of Sign, The maximum number of real roots a polynomial equation has is the number of times the sign of term changes from a higher power term to a lower power term.

In the given equation, $0=-4x^6-3x^5+2x^2-4x+1$ , we can already see that from $\red -4x^6$ to $\red -3x^5$ we can see that the sign didn't change so there might be no real roots. From $\red -3x^5$ to $\blue +2x^2$ , we can see that the signs change so we now know that there might be $1$ real root for equation. From $\blue +2x^2$ to $\red -4x$ , the signs changed so there might be $2$ real roots. From $\red -4x$ to $\blue +1$ , it changed again so there might be $3$ real roots. There are no other term with lesser power to compare for $\blue +1$ so we are left with $3$ real roots.

7 0

3 years ago

Read 2 more answers

The Taylor family's pancake recipe uses 2 teaspoons of baking powder for every 1/3 of a teaspoon of salt. How much baking powder

Yuki888 [10]

Answer:

6 teaspoons

Step-by-step explanation:

2 teaspoons = 1/3 tsp of salt

6 teaspoons = 1 tsp of salt

This was done by multiplying 2 by 3 since 3 thirds (3/3) make one whole.

So if 2 teaspoons are used for 1/3 teaspoon of salt, 4 teaspoons would be used for 2/3 teaspoon of salt and 6 teaspoons would be used for 1 teaspoon of salt.

7 0

3 years ago

The graphs below have the same shape. what is the equation o the red graph?

maw [93]

So the equation of the red graph is already given to us: $f(x) = x^2$ . I assume you meant the blue graph?

We can use the vertex form: $y = a(x - h)^2+ k$ , where $(h,k)$ is the vertex. (We can ignore $a$ because $a$ is 1 for this graph.) Remember that the vertex is the maximum or minimum of a parabola and the point that the line of symmetry passes through. For f(x) the vertex is (0,0).