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3 years ago

I need help with this thank you!

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

7 0

Answer: m<AOB is 60 degrees.

Step-by-step explanation: If BCD is 30 degrees, it intercepts the arc BA, and therefore, any angle that intercepts an arc is half of the arc it intercepts. Thus, AOB is 60 degrees.

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What’s the correct answer for this question?

Maksim231197 [3]

Answer

C. 14

Explanation

The area of triangle = 1/2(base)(height)

The height:

the height is the distance from point (2,-3) perpendicular to the base intersecting it at point (2,1)

the height is then the distance between the 2 points = 4

The base:

the base is the distance between points (7,1)and (0,1) = 7

The area:

the area = 1/2 x 4 x 7 = 28/2 = 14 units²

8 0

3 years ago

Rachel is a stunt driver, and she's escaping from a building that is about to explode!

lilavasa [31]

Answer: 38 meter per second

Step-by-step explanation:

Given: The variable d models Rachel's distance from her exit (in meters) t seconds after the cameras began recording the stunt.

$d=-38t+220$

where -38 is the rate of change of function .

Since speed is the rate of change of position with respect to time , thus

Speed =-38 meter per second which shows decrease in distance with respect to time.

At t=0 second, d=220 meters

At t=1 second , $d=-38+220 =182$ meters

Distance traveled in 1 second = 220-182=38

Now, Rachel's speed= $\frac{Distance}{time}$

Rachel's speed= $\frac{38}{1}$ =38 meter per second

3 0

3 years ago

Read 2 more answers

a farmer is planning a rectangular area for her chickens. the area of the rectangle will be 200 square feet. three sides of the

Vladimir79 [104]

Let

x---------> the length side of the rectangular area

y---------> the width side of the rectangular area

we know that

the area of the rectangle is equal to

$A=x*y\\ A= 200\ ft^{2} \\ x*y=200$

$y=\frac{200}{x}$ -----> equation $1$

The perimeter of the rectangle is equal to

$P=2x+2y$

but remember that the fourth side of the rectangle will be formed by a portion of the barn wall

$P=x+2y$ -----> equation $2$

To minimize the cost we must minimize the perimeter

Substitute the equation $1$ in the equation $2$

$P=x+2*[\frac{200}{x} ]$

Using a graph tool

see the attached figure

The minimum of the graph is the point $(20,40)$

that means for $x=20\ ft$

the perimeter is a minimum and equal to $40\ ft$

Find the value of y

$y=\frac{200}{x}$

$y=\frac{200}{20}$

$y=10\ ft$

The cost of fencing is equal to

$5*40= \$200$

therefore

the answer is

the length side of the the fourth wall will be $20\ ft$

7 0

3 years ago

What is the median of 6 8 10 12 12 15 15 20?

I am Lyosha [343]

Answer:

I think is 12..........

8 0

3 years ago

Read 2 more answers

One quart equals 946.35 milliliters. How many milliliters are in 3 pints

Allisa [31]

Answer:

There are 1419.5 ml in 3 pints

Step-by-step explanation:

The pint is a unit used to measure volume. When measuring many cups of liquid all put together we might want to use quarts.

A quart (qt) is the same thing as 4 cups or 2 pints.

1 quart = 2 pints = 4 cups

Now we have to find how many ml in 3 pints.

1 pint = 473.17647 ml

Now multiply the quantity of pint given in the question by 473.17647 ml.

3 * 473.17647

= 1419.52941 ml

By rounding off we get:

=1419.5 ml

Thus there are 1419.5 ml in 3 pints....

7 0

3 years ago