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3 years ago

What is the reasonable estimate for -3/2 x -5 1/4

Mathematics

2 answers:

Ahat [919]3 years ago

6 0

Answer:

Step-by-step explanation:

First of all, the estimate will be +, because (-)(-) = (+).

So the problem boils down to approx 1 1/2 times 5, which comes out to 7 1/2.

7 1/2 is a reasonable estimate.

Please, when answer choices are given you, share them.

Lady bird [3.3K]3 years ago

3 0

Answer:

7.875......7.9.....or 8

Step-by-step explanation:

-3÷2×-21÷4= 7.875

63÷8=7.875

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a small city park has a rectangular lawn that is 20meters long and 10meters wide. what is the area of the lawn

Usimov [2.4K]

The formula for the area of the rectangular is:
long * wide
So the answer is:
20*10 = 200 meters :))))
I hope this is helpful
have a nice day

7 0

3 years ago

Read 2 more answers

What is the slope intercept of the equation of the line through the given point (0,3) and (-4,-1)

cestrela7 [59]

Answer:

y=x+3

Step-by-step explanation:

1.) Find slope

slope = (-1-3)/(-4-0)

= -4/-4

= 1

2.) Use point slope form

both x1 and y1 are the points

m is the slope

3.) Plug in the numbers

for the points I chose (0,3) to plug in

y-3= 1 (x1-0)

y-3= x

y= x+3

8 0

3 years ago

A tank can be filled by one pump in 3.2 hours and by another pump in 80 minutes. A third pump can drain the tank in 2 hours and

Mademuasel [1]

Answer:

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

Step-by-step explanation:

Let's convert each time to minutes:

3.2 hours = 192 minutes

80 minutes = 80 minutes

2 hr 20 min = 140 minutes

Next, let's find the least common multiple:

LCM(192, 80, 140) = 6720

So let's say the volume of the tank is 6720 units. The speed of each pump is therefore:

Pump 1 = 6720 units / 192 minutes = 35 units/minute

Pump 2 = 6720 units / 80 minutes = 84 units/minute

Pump 3 = -6720 units / 140 minutes = -48 units/minute

Their combined speed is:

35 + 84 − 48 = 71 units/minute

So the time to fill the tank is:

6720 units / (71 units/minute) = 94.65 minutes

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

6 0

3 years ago

Help please thank you

avanturin [10]

Answer:

150*2/3=100

take school size then multiply it by the ratio to get the amount of student who prefer such toothpaste.

Step-by-step explanation:

4 0

2 years ago

The distance from the origin to the point (-24, 32) is

Zepler [3.9K]

The Pythagorean theorem tells you that distance is
.. √((-24)^2 +32^2)) = √(576 +1024) = √1600 = 40

6 0

3 years ago