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2 years ago

Simplify this quetion plsssssss

Mathematics

1 answer:

anzhelika [568]2 years ago

5 0

1. Calculate the square root: 5x4+7x5
2. Multiply 5x4=20 7x5 20+35
3. 20+35=55

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The Turtle and Achilles compete. They start at the same time from the same place. Achilles runs at a speed of 13 mph while the T

grandymaker [24]

Answer:

2 minutes.

Step-by-step explanation:

Let t be the time taken in competition and the distance covered by Achilles be x miles.

We have been given that when Achilles reaches the finish line, the Turtle is 2/5 of a mile behind him. This means that distance covered by turtle will be: $x-\frac{2}{5}$ .

Achilles runs at a speed of 13 mph while the Turtle moves at a speed of 1 mph.

Since we know that $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$ , so we can set two equations for time taken by Achilles and turtle as:

$t=\frac{x}{13}...(1)$

$t=\frac{(x-\frac{2}{5})}{1}...(2)$

From equation (1) we will get,

$x=13t$

Upon substituting this value in equation (2) we will get,

$t=\frac{13t-\frac{2}{5}}{1}$

Let us have a common denominator.

$t=\frac{\frac{65t-2}{5}}{1}$

$t=\frac{65t-2}{5}$

Upon multiplying both sides of our equation by 5 we will get,

$5t=5\times \frac{65t-2}{5}$

$5t=65t-2$

$5t-65t=65t-65t-2$

$-60t=-2$

$t=\frac{-2}{-60}$

$t=\frac{1}{30}$

So, the competition took 1/30 hour, let us convert our given time in minutes.

$\frac{1}{30}\text{ hour}\times \frac{60\text{ minutes}}{\text{hour}}$

$\frac{1}{30}\times 60\text{ minutes}$

$2\text{ minutes}$

Therefore, the competition took 2 minutes.

8 0

3 years ago

To the nearest tenth of a precent, 78 is what precent of 82

forsale [732]

Answer:

95.1

Step-By-Step Explanation

78:82*100 =

(78*100):82 =

7800:82 = 95.12

Now we have: 78 is what percent of 82 = 95.12

Question: 78 is what percent of 82?

Percentage solution with steps:

Step 1: We make the assumption that 82 is 100% since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that 100%=82

Step 4: In the same vein, x%=78

Step 5: This gives us a pair of simple equations:

$100\%=82(1)

$x\%=78(2)

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

100% over x% = 82 over 78

Step 7: Taking the inverse (or reciprocal) of both sides yield

x% over 100% = 78 over 82

x = 95.12%

Therefore, 78 is 95.12% of 82

I only 1 more Brainliest to get to the next level so getting one would be lovely

6 0

3 years ago

What is the 4th perfect number and what are its divisors?

Aleks04 [339]

Answer:

8128

1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, 4064

Step-by-step explanation:

A perfect number is one whose divisors total the number itself. Only 51 perfect numbers are known at this time. The first five are ...

6, 28, 496, 8128, 33550336

The fourth perfect number is 8128. Its divisors (excluding the number itself) are ...

1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, 4064

3 0

3 years ago

Find the mean for the following group of data items. 175, 115, 145, 115, 135

leva [86]

Answer:

137

Step-by-step explanation:

175+115+145+115+135= 685

685÷5= 137

To put that into words you add up all the numbers and divide the sum by how many numbers there are.

4 0

3 years ago

Evaluate 3(g3) when g=2

lozanna [386]

Hey there! :D

$3( g^{3})$

Put 2 in as g.

$3( 2^{3})$

$3(8)$

$= 24$

I hope this helps!
~kaikers

4 0

3 years ago

Read 2 more answers

Simplify this quetion plsssssss ​

Simplify this quetion plsssssss