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3 years ago

2. (03.05)

Mathematics

1 answer:

Zina [86]3 years ago

5 0

Answer:

The average change rate increases by a dollar for every 10 minutes you speak.

Step-by-step explanation:

If you do not speak at all you pay the standard price.

After that, If you add 10 minutes to your talk time, you add a dollar to your payment

hope it helps c:

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A student leaving school walks 2.8 km north and then walks 1.2 km south. What is

vova2212 [387]

Answer: 1.6km

Step-by-step explanation: 2.8km - 1.2km

The student is still north from school.

I hope this answer helped! :)

4 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP!!

Nitella [24]

Answer:

The radius of a sphere is 2 millimeters

The surface area of a sphere is 50.24 square millimeters.

The circumference of the great circle of a sphere is 12.56 millimeters.

Step-by-step explanation:

Verify each statement

case A) The radius of a sphere is 8 millimeters

The statement is false

we know that

The volume of the sphere is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$V=100.48/3\ mm^{3}$

$\pi =3.14$

substitute and solve for r

$100.48/3=\frac{4}{3}(3.14)r^{3}$

$r^{3}=(100.48)/(4*3.14)$

$r=2\ mm$

case B) The radius of a sphere is 2 millimeters

The statement is True

(see the case A)

case C) The circumference of the great circle of a sphere is 9.42 square millimeters

The statement is false

The units of the circumference is millimeters not square millimeters

The circumference is equal to

$C=2\pi r$

we have

$r=2\ mm$

$\pi =3.14$

substitute

$C=2(3.14)(2)$

$C=12.56\ mm$

case D) The surface area of a sphere is 50.24 square millimeters.

The statement is True

Because

The surface area of the sphere is equal to

$SA=4\pi r^{2}$

we have

$r=2\ mm$

$\pi =3.14$

substitute

$SA=4(3.14)(2)^{2}$

$SA=50.24\ mm^{2}$

case E) The circumference of the great circle of a sphere is 12.56 millimeters.

The statement is true

see the case C

case F) The surface area of a sphere is 25.12 square millimeters

The statement is false

because the surface area of the sphere is $SA=50.24\ mm^{2}$

see the case D

7 0

3 years ago

Read 2 more answers

Reynaldo drew square EFGH. Then, he drew the image of it, square E'F'G'H', 4 centimeters to the left of the original figure. Lin

OLEGan [10]

Answer:

6 centimeters

Step-by-step explanation:

Square E'F'G'H' is just square EFGH translated to the left.

It is still the same size, just in a different location.

Line segment EF is the same length as segment E'F'.

6 centimeters

3 0

3 years ago

Broccoli cost 1.50 per pound at a store. How much money does 32 ounce of broccoli cost.

spayn [35]

Answer:

$3.00

Step-by-step explanation:

Step 1. Calculate the pounds of broccoli.

Start with what you know: you want 32 oz of broccoli.

You know that 1 lb = 16 oz. Calculate the weight in pounds

Wt = 32 × 1/16

Wt = 2 lb

===============

Step 2. Calculate the cost of the broccoli.

$1.50 = 1 lb Calculate the cost

Cost = 2 × 1.50/1

Cost = $3.00

7 0

3 years ago

Find the slope thanks PLEASE

Fudgin [204]

Answer:

37) -1/3

38) 8/5

39) 0

40) -2/3

Step-by-step explanation:

6 0

3 years ago