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3 years ago

Which of the following equations has infinitely many solutions?

Mathematics

1 answer:

Valentin [98]3 years ago

7 0

Answer:

Step-by-step explanation:

If you look at A and you subtract 3x by 4x you get x and you subtract 3 from -7 and you get -10. But if you look at B you do the stuff in the parentheses first and you get 4x+12x+28=16x+28 and they're the same so it's B.

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Find the area of the triangle.

PolarNik [594]

Answer:118.3

Step-by-step explanation:

=0.5*13*18.2

6 0

3 years ago

Heart beats 2,320 times during 20 minutes of rowing. While resting the heart is beating 16 times in 15 seconds. What is the diff

Mrac [35]

Answer: 0.87 times per second (Or 52.2 times per minute)

Step-by-step explanation:

You need to make the conversion from minutes to seconds.

Remember that 1 minute has 60 seconds. Then 20 minutes to seconds is:

$(20minutes)(\frac{60seconds}{1minute})=1,200seconds$

Find the number of times the heart beats in 1 second when it is rowing:

$x_1=\frac{(2,320times)}{1,200seconds}=1.93\ times\ per\ second$

Find the number of times the heart beats in 1 second when it is resting:

$x_2=\frac{(16times)}{15seconds}=1.06\ times\ per\ second$

Then the difference is:

$difference=(1.93-1.06)\ times\ per\ second\\difference=0.87\ times\ per\ second$

(Or 52.2 times per minute)

6 0

3 years ago

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Find the length of the line joining the following points. <br>1. P(-4,3) and Q (5,16) <br>

jekas [21]

I have this same problem I need help too!!!

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2 years ago

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50 POINT PLS HELP

STALIN [3.7K]

1,416 hours for mercury to make a full rotation

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3 years ago

At what speed in miles per hour will a bicycle travel if the rider can cause the 26-inch diameter wheel to rotate 90 revolutions

Sati [7]

26' wheel @ 90 rpms = 2,340 inches / min (26 x 90)

2,340 inches / min = 140,400 inches / hour (2,340 x 60)

140,400 inches / hour = 11,700 feet / hour (140,400 / 12)

11,700 feet / hour = approx. 2.216 miles / hour (11,700 / 5,280)

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3 years ago

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