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miskamm [114]
2 years ago
14

I NEED HELP WITH NUMBER 6 AND 7! I WILL MARK YOU AS BRAINLIEST IF YOU ANSWER CORRECTLY! PLZ AND TY! :D

Mathematics
1 answer:
Shtirlitz [24]2 years ago
8 0

Answer/Step-by-step explanation:

6. To know who cycled faster between Sam and Bobby, find the constant of proportionality of both of them. The person with the least value of constant of proportionality is the fastest.

Constant of proportionality for Sam = \frac{distance (y)}{time (x)} = \frac{20}{2} = 10 mph

Constant of proportionality for Bobby:

Use (0, 0) and (2, 18) to find the constant of proportionality, which is:

m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{18 - 0}{2 - 0} = \frac{18}{2} = 9 mph.

Bobby's unit rate/constant of proportionality is smaller than Sam's.

So, Bobby cycled faster.

7. y = 15x is given as representing the amount of Pauli's Pizzeria Pizza.

15 in the equation is the slope/constant of proportionality, which represents the cost of a unit of pizza.

From the graph, the unit rate/constant of proportionality of Leo's Pizzeria Pizza can be calculated as, y/x.

Using (2, 24), we have 24/2 = 12

This means Leo's Pizzeria cost $12 per pizza.

Therefore:

Pauli's Pizzeria takes in $15 per pizza

Leo's Pizzeria takes in $12 per pizza

Pauli's Pizzeria takes in more money per pizza.

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Omar is collecting toy cars. He starts his collection with 2 toy cars that his grandmother gave him. He plans to buy cars each w
d1i1m1o1n [39]

Can you please add the table so i can answer it

4 0
2 years ago
Find the volume of the solid. Round your answer to the nearest tenth
insens350 [35]

Answer:

Solution given:

Volume of cone=⅓πr²h

Volume of cylinder=πr²h

1.

volume =πr²h=π*(10/2)²*6=<u>471.23mm³</u>

2.

Volume =πr²h=π*8*12.5=<u>314.16in³</u>

3.

volume =⅓πr²h=⅓*π*4²*3=<u>5</u><u>0</u><u>.</u><u>2</u><u>6</u><u>c</u><u>m</u><u>³</u>

4.

Volume =⅓πr²h=⅓*π*(8/2)²*12=<u>2</u><u>0</u><u>1</u><u>.</u><u>0</u><u>6</u><u>i</u><u>n</u><u>³</u>

5 0
3 years ago
What is the opposite of 3.75 on a number line?​
vodomira [7]

Answer:

-3.75

Step-by-step explanation:

the opposite changes the sign from positive to negative, so the opposite of 3.75 would be -3.75

5 0
2 years ago
Read 2 more answers
Cameron buys 2.45 pounds of apples and 1.65 pounds of pears. Apples and pears each cost c dollars per pound. If the total cost a
Leto [7]

Answer:

2.45c + 1.65c = 4.12 + 0.75

Step-by-step explanation:

To write an equation to find the value for c, we need to declare what c is first.

c = price of fruit

2.45c + 1.65c = 4.12 + 0.75

Now we multiplied c to 2.45 and 1.65 and added them together, because whatever the value of c is will give us the equivalence of the sum of 4.12 + 0.75.

Now to check if the equation is right, let's solve for c.

2.45c + 1.65c = 4.12 + 0.75

4.1c = 4.87

Now to get the value of c, we divide both sides of the equation by 4.1.

\dfrac{4.1c}{4.1}=\dfrac{4.87}{4.1}

c = 1.19

Now let's substitute the value of c in the equation to see if we got it right.

2.45(1.19) + 1.65(1.19) = 4.12 + 0.75

2.92 + 1.96 = 4.87

4.87 = 4.87

Therefore concluding that the value of c is 1.19.

7 0
3 years ago
2.6.5 A plant physiologist grew birch seedlings in the green-house and measured the ATP content of their roots. (See Example 1.1
Ilya [14]

Answer:

(a)\ \bar x = 1.19

(b)\ \sigma_x = 0.18

Step-by-step explanation:

Given

n = 4

x: 1.45\ 1.19\ 1.05\ 1.07

Solving (a): The mean

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{1.45 + 1.19 + 1.05 + 1.07}{4}

\bar x = \frac{4.76}{4}

\bar x = 1.19

Solving (b): The standard deviation

This is calculated as:

\sigma_x = \sqrt{\frac{\sum(x - \bar x)^2}{n - 1}}

So, we have:

\sigma_x = \sqrt{\frac{(1.45 -1.19)^2 + (1.19 -1.19)^2 + (1.05 -1.19)^2 + (1.07 -1.19)^2}{4 - 1}}

\sigma_x = \sqrt{\frac{(0.1016}{3}}

\sigma_x = \sqrt{0.033867}

\sigma_x = 0.18

4 0
3 years ago
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