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3 years ago

the graph shows rate at which an oven preheats when turned on. what is the unit rate and what does it represent?

Mathematics

2 answers:

zvonat [6]3 years ago

4 0

Answer:

Step-by-step explanation:

i dont know

raketka [301]3 years ago

3 0

Answer:

no lo se está difícil y además nose inglés

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Hour how much does davon charge per hour for a skateboard rental HELPP I BEG

Setler79 [48]

Answer:

Davon charges $7 per hour of rental

6 0

3 years ago

Show whether or not y=x+3 is tangential to the curve y^2=x

wolverine [178]

The line y = x + 3 has slope 1, so we look for points on the curve where the tangent line, whose slope is dy/dx, is equal to 1.

y² = x

Take the derivative of both sides with respect to x, assuming y = y(x) :

2y dy/dx = 1

dy/dx = 1/(2y)

Solve for y when dy/dx = 1 :

1 = 1/(2y)

2y = 1

y = 1/2

When y = 1/2, we have x = y² = (1/2)² = 1/4. However, for the given line, when y = 1/2, we have x = y - 3 = 1/2 - 3 = -5/2.

This means the line y = x + 3 is not a tangent to the curve y² = x. In fact, the line never even touches y² = x :

x = y² ⇒ y = y² + 3 ⇒ y² - y + 3 = 0

has no real solution for y.

3 0

2 years ago

An entrepreneur is having a design group produce at least eight samples of a new kind of fastener that he wants to market. It co

DerKrebs [107]

Answer:

Step-by-step explanation:

4 0

2 years ago

Alina drew a model of a square pyramid. The dimensions of the model are shown in the diagram. pls don't answer with links

Romashka [77]

Answer:

Step-by-step explanation:

Volume of a pyramid = 1/3 base area * height

= 1/3 (8 * 10)(12)

6 0

2 years ago

randy earns $14.50 per hour for the first 40 hours worked in a week and $21.75 per hour for hours over 40. Last week Randy earne

Nutka1998 [239]

Answer:

4 hours

Step-by-step explanation:

We know the following:

Total amount Randy earned: $667

Pay for first 40 hours: $14.50 per hour

Pay after 40 hours: $21.75 per hour

We need to find the total extra hours: $x$

If the total number of hours worked are, $T$ , then: $x + 40 = T$

Total pay received for the first 40 hours: $40 \times 14.50 = 580$

If out of $667, Randy earns $580 from the first 40 hours, the left over are earned by extra hours.

$667 - $580 = $87 ------- (a)

Total pay received for working after 40 hours: $21.75x$

We know from eq (a) that total pay is 87, hence we can find the number of hours using this.

$21.75x = 87\\\\x = \frac{87}{21.75}\\\\x = 4$

Randy worked 4 extra hours.

6 0

3 years ago