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3 years ago

15

Our 6 Grade math class was comparing and different lemonade recipes,one used 2 cups of water to 1 scoop of mixture. The other us

ed 5 cups of water to 3 scoops of mixture. which recipe has aweaker taste ( More water)?

1 answer:

Reptile [31]3 years ago

7 0

The one that used two cups. for the one that used 5 cups of water and 3 scoops of mixture would have a more strong taste.

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5. Twenty-five sixth-grade students entered a math contest consisting of 20 questions. The student who

Grace [21]

Answer:

two coins are flipped:

if dime land heads and nickel land heads then Allan wins

if dime land heads and nickel land tail then Beth wins

if dime land tail and nickel land heads then Carlos wins

if dime land tail and nickel land tail then Denesha wins

Step-by-step explanation:

The method described above is fair since the probability of each case is 0.25.

If the two coins are flipped:

The probability dime land head is 0.5

The probability dime land tail is 0.5

The probability nickel land head is 0.5

The probability nickel land tail is 0.5

Then the probability dime land heads and nickel land heads is 0.5 × 0.5 = 0.25.

The other four cases are calculated similarly and their probability is also 0.25

6 0

3 years ago

The surface area of a melting snowball decreases at a rate of3.8cm2/min. Find the rate at which its diameter decreases when the

Scorpion4ik [409]

Answer:

Step-by-step explanation:

This is a pretty basic related rates problem. I'm going to go through this just like I do in class when I'm teaching it to my students.

We see we have a snowball, which is a sphere. We are talking about the surface area of this sphere which has a formula of

$S=4\pi r^2$

In the problem we are given diameter, not radius. What we know about the relationship between a radius and a diameter is that

d = 2r so

$\frac{d}{2}=r$ Now we can have the equation in terms of diameter instead of radius. Rewriting:

$S=4\pi(\frac{d}{2})^2$ which simplifies to

$S=4\pi(\frac{d^2}{4})$ and a bit more to

$S=\pi d^2$ (the 4's cancel out by division). Now that is a simple equation for which we have to find the derivative with respect to time.

$\frac{dS}{dt}=\pi*2d\frac{dD}{dt}$ Now let's look at the problem and see what we are given as far as information.

The rate at which the surface area changes is -3.8, and we are looking for $\frac{dD}{dt}$ , the rate at which the diameter is changing, when the diameter is 13. Filling in:

$-3.8=\pi(2)(13)\frac{dD}{dt}$ and solving for the rate at which the diameter is changing:

$-\frac{3.8}{26\pi}=\frac{dD}{dt}$ and divide to get

$\frac{dD}{dt}=-.459\frac{cm}{min}$ Obviously, the negative means that the diameter is decreasing.

7 0

3 years ago

1/4 ÷ 3<br> I don't know it pls help me

eduard

Answer: 1 / 12

Step-by-step explanation:

1 / 4 x 1 / 3 = 1 / 12

5 0

2 years ago

Read 2 more answers

35,000;3,500;350; I have to find the rule to this pattern

Vikki [24]

The answer is was he number is being divided by 10

3 0

3 years ago

Simplify the rational expression<br> x^2-25÷x^2+x-6 × x+3÷×-5

aliina [53]

Answer:

x - 6

—————

x + 5

Step-by-step explanation:

4 0

3 years ago