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Olenka [21]
2 years ago
10

PLEASE HELP 100 POINTS 100 100 100 PLEASSSSE

Mathematics
2 answers:
Oksi-84 [34.3K]2 years ago
5 0

Answer:

b

Step-by-step explanation:

Alenkasestr [34]2 years ago
3 0

Step-by-step explanation:

the distance is 2500 m = 2.5 km, which we have to change into miles by using the factor of 1.6.

so, 2.5 km / 1.6 = 1.5625 miles.

or in fractions

5/2 / 16/10 = 5/2 / 8/5 = 5/2 × 5/8 = 25/16 = 1 9/16 miles

Adam drove these 1.5625 miles in 102 seconds.

to get mph we need to transform 102 into 3600 (seconds in an hour).

102x = 3600

x = 3600/102 = 1800/51 = 600/17 = 35.29411765...

(25/16 / 102) × (600/17 / 600/17) =

(25×600 / 16×17) / (102×600 / 17) =

(25×75 / 2×17) / (6 × 600) = (1875 / 34) / 3600 =

55.14705882.../1 hour = 55.14705882... mph

a) Adam was driving 55 mph.

b) now we have to calculate backwards.

he would drive 50 miles in 3600 seconds, so, how many seconds for 25/16 miles ?

the factor is

50 / 25/16 = 50/1 × 16/25 = 50×16 / 25×1 = 2×16 = 32

he drove only 1/32 of the 50 miles.

so, now we need to divide 3600 by 32

3600 / 32 = 225/2 = 112.5 seconds

rounded it should have taken him at least 113 seconds.

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Elza [17]

Answer:

1. x^2+12x+32

Step-by-step explanation:

(x+8)(x+4)

x(x+4)+8(x+4)

x^2+4x+8x+32

x^2+12x+32

3 0
2 years ago
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At a rental car company, a customers daily rental charge D (in dollars) for m miles driven is determined by the function D = 35
lianna [129]

Answer:

See below

Step-by-step explanation:

<u>Given function:</u>

  • D = 35 + 0.4m

m represents the domain and D represents the range of the function, therefore m = x, D = y

<u>Filling in the table:</u>

  • for x = 10, y = 35 + 0.4*10 = 35 + 4 = 39 and so on for the rest of the values
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  • y = 39, 47, 55, 65, 75
3 0
2 years ago
Nicole is running for school president. Her best friend designed a campaign poster, which measured 3 feet by 2 feet. Nicole like
melamori03 [73]

Answer:

The scale factor is 18 to 1 for the painting

Step-by-step explanation:

Here we want to get the scale factor of the original to what is reproduced

Let us have same units first

Mathematically;

1 foot = 12 inches

3 feet = 36 inches

2 feet = 24 inches

So 36 to 2 and 24 to 1 1/3

That will be ratio 36/2 = 18 to 1

same as 25 divided by 1 1/3 = 18 to 1

8 0
2 years ago
The monthly fees for single rooms at five colleges are $370, $310,$380,$340, and $310, respectively what is the mean of these mo
noname [10]

Answer:

$342

Step-by-step explanation:

370+310+380+340+310=1710

1710/5=342

8 0
3 years ago
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Idek how to explain this but please help me
Leno4ka [110]

Answer:

Put 4 in the place of x then you'll get

\frac{10}{22}

3 0
2 years ago
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