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3 years ago

Pre algebra question please help

Mathematics

1 answer:

Vladimir79 [104]3 years ago

8 0

The answer is 3.5 to the question

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3<br> Select the correct answer.<br> What are the solutions to this equation?<br> 16x² + 9 = 25

Charra [1.4K]

Answer:

Step-by-step explanation:

16x^2 + 9 = 25

16x^2 = 16

x^2 = 1

x = 1, -1

4 0

3 years ago

during 2002 the average person ate 220.8 pounds of meat how much meat does a family of 3 people eat in one year

7nadin3 [17]

You do 220.8 times 3. That's 662.4 pounds of meat in a year.

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4 years ago

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1.An ice cream cone has a radius of 3 inches and a height of 5 inches. Which measurement is the closest to the volume in cubic i

Murljashka [212]

First question
Volume = height * radius*radius*3.14
5*3*3*3.14 = 141.3 in3

Second qustion
Violume = height * radius * radius * 3.14
28*8*8*3.14= 5626.88 cm3
So the answer is 1875.63 because it's the closest

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3 years ago

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Question 6 of 10

balu736 [363]

Answer:

The answer is B. 50

Step-by-step explanation:

180-105=75

75+55=130

180-130=50

4 0

3 years ago

A trains leaves Cincinnati at 2:00 pm.A second train leaves the same station in the same direction at 4:00 pm.The second train t

kvasek [131]

Answer:

Speed of first train = 36 mph

Speed of second train = 60 mph

Step-by-step explanation:

Given:

First train leaves Cincinnati at 2:00 PM

Second train leaves same station at 4:00 PM

Speed of second train is 24 mph faster than first train.

The second train overtakes the first at 7:00 PM

To find the speeds of each train.

Solution:

First train:

Let speed of first train be = $x\ mph$

Time of travel between 2:00 PM to 7:00 PM = $7-2=5\ h$

Distance traveled by 1st train in 5 hours in miles = $Speed\times time = x\times 5 = 5x$

Second train:

Then, speed of second train will be = $(x+24)\ mph$

Time of travel between 4:00 PM to 7:00 PM = $7-4 = 3\ h$

Distance traveled by second train in 3 hours in miles = $Speed\times time = (x+24)\times 3=3x+72$

At 7:00 PM both trains meet as the second train overtakes the first. This means the distance traveled by both the trains is same at 7:00 PM as they both leave from same stations.

Thus, we have:

$5x=3x+72$