Evaluate when t=-3, -3t + 4

Plz NEED HELP ANSWER BOTH will mark BRAIN

kicyunya [14]

Answer:

1. is 7 to 1 and

2. is 3 to 6

Step-by-step explanation:

You get number one's answer by finding to difference between 13 to 7 which Is six. so now you start at 1 and add 6 which would be 7 and would give you your answer of 7 to 1.

You get number two's answer by finding the ratio given which is 1 black square to 2 Grey squares. Since it mentions to triple it you multiply both numbers by 3. which would give you 3 to 6. You know that this is right because it is equivalent to 1/2 which was what the first ratio was.

you're welcome

4 0

3 years ago

A cylindrical roller 2.5 m in length, 1.5 m in radius when rolled on a road was found to cover the area of 16500 m2 . How many r

eduard

Answer:

701 revolutions

Step-by-step explanation:

Given: Length= 2.5 m

Radius= 1.5 m

Area covered by roller= 16500 m²

Now, finding the Lateral surface area of cylinder to know area covered by roller in one revolution of cylindrical roller.

Remember; Lateral surface area of an object is the measurement of the area of all sides excluding area of base and its top.

Formula; Lateral surface area of cylinder= $2\pi rh$

Considering, π= 3.14

⇒ lateral surface area of cylinder= $2\times 3.14\times 1.5\times 2.5$

⇒ lateral surface area of cylinder= $23.55 \ m^{2}$

∴ Area covered by cylindrical roller in one revolution is 23.55 m²

Next finding total number of revolution to cover 16500 m² area.

Total number of revolution= $\frac{16500}{23.55} = 700.6369 \approx 701$

Hence, Cyindrical roller make 701 revolution to cover 16500 m² area.

8 0

3 years ago

Consider the y-intercepts of the functions. g(x) = (x – 2)2 The y-coordinate of the greatest y-intercept is

ira [324]

Answer:

0 there is no y only x

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Few math questions TIME IS RUNNING OUT!! PLEASE HELP!!!!

svetlana [45]

1.

Answer D. (75%)

2.

A > 1 so answers B and D. (1.3 and 3.33)

3.

Answer B. (1.04)

4.

This one is strange but answer C (128 players).

5.

Answer D. (13.7%)

5 0

3 years ago

A recycling plant recycled 4.9 kg of paper and cardboard the first hour and 7.8 kg/h

Daniel [21]

Answer: R = {0kg, 59.5kg}

Step-by-step explanation:

When we have a function f(x) = y.

The set of the possible values of x is called the domain of the function, and the set of the possible values of y is called the range of the function,

In this case, we have that:

the plant recycled 4.9kg the first hour, and 7.8 kg per hour after.

So this function can be written as piecewise function, with one part for the first hour, and another part for the time after the first hour.

F(x) = 4.9kg*x if 0h < x ≤ 1h

F(x) = 4.9kg + 7.8kg/h*(x -1) if x ≥ 1h

We use (x - 1) for the second part because if x = 1 h, we must have the same result in both parts of the function.

Where x is the number of hours.

And we know that the domain is (0hours, 8 hours)

Then the minimum value of y will be:

F(0h) = 4.9kg*0h = 0kg.

And the maximum value in the range will be:

F(8h) = 4.9kg + 7.8kg*7 = 59.5kg

Then the range is:

R = {0kg, 59.5kg}

7 0

3 years ago

Evaluate when t=-3, -3t + 4​

Evaluate when t=-3, -3t + 4