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2 years ago

15

HELP! I will rlly appreciate it! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as A

my is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now?

1 answer:

Effectus [21]2 years ago

4 0

Answer:

I believe the answer is 10

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Three out of every ten dentists recommend a certain brand of fluoride toothpaste. Which assignment of random digits would be use

Len [333]

Answer:

b

Step-by-step explanation:

only b has 10 didgets. it could be a since the didgets aren't very random, but then again, i think it's b

5 0

3 years ago

If 22% of a number is 154, then the

yulyashka [42]

Answer:

22% = 154

100%= ?

=100×154/22

= 700

Step-by-step explanation:

5 0

2 years ago

When it's an acute triangle what do you notice about the sum of the areas of the 2 smaller squares in relation to the area of th

Ymorist [56]

They're the same because squares have 90 degree angles and that cut in half with a diagonal would make the angle acute at a 45 degree angle so depending on the lengths of the sides depends on the area, the angles have nothing to do with it because all squared have 4 right angles

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3 years ago

Anne is running on a trail at an average speed of 6 miles per hour beginning at mile marker 4. John is running on the trail at t

Sphinxa [80]

Answer:

John is running faster.

Step-by-step explanation:

Given that:

Average Speed of Anne = 6 miles per hour

Speed of John can be represented in the table below:

$\begin{center}\begin{tabular}{ c c}Time (hours) x & Mile Marker y \\ 0 & 1 \\ 0.5 & 4.5 \\ 1 & 8 \\ 1.5 & 11.5 \\\end{tabular}\end{center}$

To find:

Who is running faster of the both i.e. Anne and John?

Solution:

Here, to find the faster runner we can compare the average speed of both the runners.

We are given that, average speed of Anne = 6 miles per hour

We will have to calculate the average speed of John to find the faster runner.

<em>Average speed</em> can be calculated by dividing the total distance traveled with the total time taken.

Total distance traveled by John = 11.5 - 1 = 10.5 miles

Total time taken by John = 1.5 hours

Average speed of John = $\frac{10.5}{1.5} = 7\ miles/hr$

Clearly Average speed of John is greater than that of Anne's.

Therefore, <em>John runs faster</em>.

6 0

2 years ago

Use the Theorem of Pappus to find the volume of the solid formed by revolving the region bounded by the graphs ofy=x, y=10, and

Pepsi [2]

Answer:

C) 2094.40

nearest answer.

Step-by-step explanation:

Since the given region is bounded by y = x, y = 10 and x = 0

⇒ 0 ≤ y ≤ 10

Radius and Height are 'y'

∴ The required volume

= ∫₀¹⁰2π(radius)(height)dy

= ∫₀¹⁰2π (y) (y) dy

= ∫₀¹⁰2π y² dy

= 2π ∫₀¹⁰ y² dy

Integrate y

= $2\pi [\frac{y^3}{3}]_0^{10}$

= $2\pi [\frac{10^3}{3} - 0]$

= $\frac{2000}{3} \pi$

where π is 3.142

= 2,094.66

5 0

2 years ago