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2 years ago

Is 17 heartbeats in 15 seconds a unit rate? Why or why not?

1 answer:

8 0

No, because it is not per second. You would have to simplify to per one second for it to be a unit rate. Hope it helps! :)

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7th grade math! Please help!

Luden [163]

15) k=15

16) t=7

17) c=12

18) d=7

19) d=3

20) r=5

21) x=4

pls mark me branliest !!

6 0

2 years ago

Convert 3 quarts to pints.

Pavlova-9 [17]

It should be 6 pints

8 0

2 years ago

Read 2 more answers

A line that passes through the point (1, –1) and parallel to another line whose slope is 1.

Mars2501 [29]

Parallel lines have same slope so so far the new equation looks like this
$y = 1x + b \\ y = mx + b$
now you plug in you points or coordinates to find b or solve for the y-intercept
$- 1 = 1(1) + b$
$- 1 = 1 + b$
$- 1 = 1 + b \\ - 1 = - 1$
$- 2 = b$
now that you have your b your final solution is
$y = 1x - 2 \: or \: y = x - 2$

5 0

2 years ago

A box, with rectangular sides, base and top is to have a volume of 2 cubic feet. It has a square base. Express the surface area

guajiro [1.7K]

Answer:

Total cost F (w) = 160/w + 200* √(2w)

Step-by-step explanation:

Volume in cubic feet

V (box) = x*y*w and square base means x=y so V= 2 = x^(2)*w

hence x^(2) = 2/w (1)

Area of base and top in square feet, and cost in $

Area(t+b) = 2*x*y = 2x^(2) C(1) = Cost of ( base + top) C(1) = 40*2x^(2)

C(1) =80*x^(2) and from eq. 1

C(1) = 80*2/w = 160/w

Area of sides = 4 * x* w = 4*√((2/w))*w

C(2) = Cost of sides. is: C(2)= 50*4*√((2/w))*w C(2) = 200* √2w

Total Cost = F(c) = 160/w +200*√2w

3 0

2 years ago

15pts and brainliest to whoever can answer

lora16 [44]

9514 1404 393

Answer:

p = 3x+10

Step-by-step explanation:

The attached diagram pretty much explains it.

The unknown dimension at the top was the subject of a previous problem. It is the difference in length between the two marked horizontal segments:

(2x +15) -(x) = x +15 . . . . . length of unmarked solid horizontal line

Similarly, the length of the unmarked vertical line on the right is the difference between the marked vertical lines:

(2x -5) -(x -5) = x . . . . . length of unmarked solid vertical line

The formula for the area of a rectangle is used to find the areas of the left-side and right-side rectangles. Respectively, those areas are ...

left-side area = x(2x -5)

right-side area = x(x +15)

Then the total area enclosed by the solid line is ...

x(2x -5) +x(x +15) = x(2x -5 +x +15) = x(3x +10)

The area of the lot extension is the product of its dimensions:

extension area = x·p

We want this to be the same as the area in the solid line, so ...

x·p = x·(3x +10)

Dividing by the coefficient of p (which is x), we have ...

p = 3x +10

5 0

2 years ago