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3 years ago

Emma is building wall around

Mathematics

2 answers:

inessss [21]3 years ago

8 0

It will take 60 minutes, 1 hour

liq [111]3 years ago

8 0

Write and solve an equation of ratios:

75% 45 min
-------- = -----------
100% x

75x = 4500, and x = 60 (minutes)

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A baker needs 4 3⁄4 cups of flour. if she uses a 1 1⁄2 cup measuring scoop, how many scoops of flour must the baker use to have

notsponge [240]

3 scoops and a quarter? not really sure if you were saying one and a half cups or if the Baker was using ONE half cup scoop

1 1/2+1 1/2+1 1/2+ 1/4 =4.75

7 0

2 years ago

A restaurant used 4 pounds of potatoes during a lunch rush if they used one 12th as much beef how many pounds of beef did they u

IrinaK [193]

The answer is 48 because you multiple four and 12 because they used twice the amount

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3 years ago

A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o

lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)

y ----> the rate of the boat in still water (miles per hour)

we have that

going upstream

$y-x=\frac{150}{5}$

$y-x=30$ ----> equation A

going downstream

$y+x=\frac{150}{3}$

$y+x=50$ ----> equation B

Solve the system of equations by elimination

Adds equation A and equation B

$y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40$

Find the value of x

$y+x=50$

$40+x=50$

$x=10$

therefore

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

8 0

3 years ago

2) This is a line segment between the center and a point on the circle or sphere.

Dima020 [189]

Answer:

Radius

Step-by-step explanation:

A circle is made of specific components which define its shape. It has a fixed center which is equidistant apart from all points at its edge. The distance from the center to each point is called its radius. The distance from its edge through its center to the opposite edge is called the diameter.

3 0

2 years ago

Simplify the answer (3 to the 4th power and (3 to the negative 6th power)

AlladinOne [14]

3^4 and 3^-6
multiply, add, subtract?

8 0

3 years ago