All categories

3 years ago

Emma runs 3/4 mile in 6 minutes. Joanie runs 1 1/2 miles in 11 minutes. Whose speed is greater?

Mathematics

1 answer:

Whitepunk [10]3 years ago

3 0

Amma solve it first then ill tell you what i got as the answer:)

You might be interested in

Jeremy and Brenda drove their cars in

harkovskaia [24]

Answer: Jeremy drove 84 miles.

Step-by-step explanation:

Let x represent the number of miles that Brenda drove.

If Jeremy drove twice

as far as Brenda, it means that the distance covered by Jeremy would be 2x miles

When they stopped after some time, they were already

126 miles apart. This means that the total distance covered by both of them is 126 miles. Therefore,

x + 2x = 126

3x = 126

x = 126/3

x = 42 miles

The number of miles that Jeremy drove is

42 × 2 = 84 miles

4 0

3 years ago

For A-D, choose Yes or No to indicate whether the situation can be represented by a negative number.

dexar [7]

Answer:

A. NO

B. YES

C: YES

D: NO

Step-by-step explanation:

4 0

2 years ago

A right cylinder has a radius of r inches and height of 2r inches.

lys-0071 [83]

Answer:

Part a) The lateral area is $4r^{2} \pi \ in^{2}$

Part b) The area of the two bases together is $2r^{2} \pi\ in^{2}$

Part c) The surface area is $6r^{2} \pi\ in^{2}$

Step-by-step explanation:

we know that

The surface area of a right cylinder is equal to

$SA=LA+2B$

where

LA is the lateral area

B is the area of the base of cylinder

we have

$r=r\ in$

$h=2r\ in$

Part a) Find the lateral area

The lateral area is equal to

$LA=2\pi rh$

substitute the values

$LA=2\pi r(2r)$

$LA=4r^{2} \pi\ in^{2}$

Part b) Find the area of the two bases together

The area of the base B is equal to

$B=r^{2} \pi\ in^{2}$

the area of the two bases together is

$2B=2r^{2} \pi\ in^{2}$

Part c) Find the surface area of the cylinder

$SA=LA+2B$

we have

$LA=4r^{2} \pi\ in^{2}$

$2B=2r^{2} \pi\ in^{2}$

substitute

$SA=4r^{2} \pi+2r^{2} \pi=6r^{2} \pi\ in^{2}$

4 0

2 years ago

Read 2 more answers

(w+2t)(w^2-2wt+4t^2)

viktelen [127]

Multiply w with every term in the second parenthesis:
w³-2w²t+4wt²
multiple 2t with every term in the second parenthesis:
2w²t-4wt²+8t³
add up the products: w³+8t³

8 0

3 years ago

Read 2 more answers

Please help! Correct answers only please!

Maurinko [17]

Answer:

B. is your answer

Step-by-step explanation:

V=whl=7·6.5·7=318.5

8 0

3 years ago