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Vesnalui [34]
3 years ago
5

The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together wei

gh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback?
h = p − 4.2
h = 2p
h = 4.2 − p
p = 2h
h = p − 4.2
p = 2h
h = 4.2 − p
h = 2p
Mathematics
2 answers:
olganol [36]3 years ago
5 0

Answer:

the correct option id D.

h = 4.2 − p

h = 2p

HACTEHA [7]3 years ago
3 0

Answer:

The 4th system (h = 4.2 − p ; h = 2p)

Step-by-step explanation:

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A top swimmer would be able to swim across a 25-meter pool in about 1/5
Anni [7]

Answer:

125 m/min

Step-by-step explanation:

Find the rate (speed) as follows:

 25 meters

--------------------- = (125/1) meters/min = 125 m/min

(1/5) minute

This is equivalent to about 380 ft/min

7 0
3 years ago
Simple Question Math attachment added<br> Solve for q.<br><br> s = 4p + 4q
klasskru [66]

That would be c, or s-4p/4

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8 0
3 years ago
identify all the pionts that would lie on the line y=1/3x + 9. answer choices A: 0,9 B: -9,6 C: 3,10 D: 12,-5
OlgaM077 [116]

To find out if the points lie on the line y = 1/3x + 9, plug in the x value of the coordinate into the equation and see if the y value results in the same number


A. (0,9)

y = 1/3x + 9       Plug in 0 for "x"

y = 1/3(0) + 9

y = 9            This point is on the line


B. (-9,6)

y = 1/3x + 9         Plug in -9 for "x"

y = 1/3(-9) + 9

y = -9/3 + 9

y = -3 + 9

y = 6             This point is on the line


C. (3,10)

y = 1/3x + 9        Plug in 3 for "x"

y = 1/3(3) + 9

y = 3/3 + 9

y = 1 + 9

y = 10         This point is on the line


D. (12, -5)          

y = 1/3x + 9          Plug in 12 for "x"

y = 1/3(12) + 9

y = 12/3 + 9

y = 4 + 9

y = 13       This point is not on the line



Your answer is A, B, and C

3 0
3 years ago
The lengths of a rectangle have been measured to the nearest tenth of a centimetre they are 87.3cm and 51.8cm what is the upper
zmey [24]

Answer:

87.3

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Lower bound87.25

51.8

Upper bound 51.85

Lower bound51.75

Step-by-step explanation:

Take the tenth of a centimeter and divide by 2. .05. This is the error margin. The upper bound is .05 more then the pro final length and the lower bound are .05 less than the original

5 0
3 years ago
Convert 8kl to meters
Keith_Richards [23]

Answer: 8 cubic meters

Step-by-step explanation:

All you have to do is multiply the volume value by one

8*1=8

8 0
3 years ago
Read 2 more answers
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