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zhannawk [14.2K]

2 years ago

14

The cost of renting a boat is $51 for 5 hours. Which of the following is not an equivalent rate? Give the letter of your answer

and justify your answer. Show your work.
A. $61.20 for 6 hours

B. $30.60 for 3 hours

C. $71.40 for 7 hours

D. $41.20 for 4 hours

1 answer:

alexgriva [62]2 years ago

4 0

B. Obviously all the numbers have to do with one and it’s 30. If it’s wrong let me know !

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A rectangle has side lengths (2x-5) meters and (2x+6) meters. Write a linear expression in simplest form to represent the perime

RideAnS [48]

I’m pretty sure the answer is 12 expresion

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2 years ago

Rom4ik [11]

Answer:

Part 1) The domain of the quadratic function is the interval (-∞,∞)

Part 2) The range is the interval (-∞,1]

Step-by-step explanation:

we have

$f(x)=-x^2+14x-48$

This is a quadratic equation (vertical parabola) open downward (the leading coefficient is negative)

step 1

Find the domain

The domain of a function is the set of all possible values of x

The domain of the quadratic function is the interval

(-∞,∞)

All real numbers

step 2

Find the range

The range of a function is the complete set of all possible resulting values of y, after we have substituted the domain.

we have a vertical parabola open downward

The vertex is a maximum

Let

(h,k) the vertex of the parabola

so

The range is the interval

(-∞,k]

Find the vertex

$f(x)=-x^2+14x-48$

Factor -1 the leading coefficient

$f(x)=-(x^2-14x)-48$

Complete the square

$f(x)=-(x^2-14x+49)-48+49$

$f(x)=-(x^2-14x+49)+1$

Rewrite as perfect squares

$f(x)=-(x-7)^2+1$

The vertex is the point (7,1)

therefore

The range is the interval

(-∞,1]

6 0

2 years ago

How do I work this out

Yuri [45]

Answer:

the total number of blocks is 69

Step-by-step explanation:

the way you can find this is by counting all the outside blocks on the closest side (23) and multiplying it by the the width of the blocks on the right side (3)

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2 years ago

Could 18 in, 6 in, 13 in form a triangle

Tanya [424]

Answer: Yes

Step-by-step explanation:

The reason on why it could form a triangle because 18 is the highest side in the triangle and if you have 2 of the smaller sides that are greater than the larger size then you could form a triangle and 13 and 6 equals to 19 so you could make a triangle hopes this helps and have a good day.

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2 years ago

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ddd [48]

Answer:

141.4

Step-by-step explanation:

i think

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2 years ago