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Lapatulllka [165]
3 years ago
10

PLEASE HELP SKJSDLFSKDJF

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0

45 min is 3/4 of an hour, 3/4 0f 40 km/h=30 km

75km/h x 2hr=150km

=180km

Total time:3hr

180kh/3hr=60km/h

sorry if im wrong

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15b^(9/5) + 9b^(4/5)<br> Factor completely.
stellarik [79]

Answer:

3b^(4/5) * (5b + 3)

Step-by-step explanation:

Factor:

  • 15b^{9/5} + 9b^{4/5}

Take out the factor 3b^4/5

  • 3b^{4/5}(5b) + 3b^{4/5}(3)
  • 3b^{4/5}(5b + 3)

-Chetan K

3 0
3 years ago
Question 9 - (3 marks available)
finlep [7]

Answer: a) 1,600

              b) 35,000

              c) 120,000

<u>Step-by-step explanation:</u>

First, round each number to one significant digit (the first digit).

Then multiply them.

a) 17   --> rounds to 20

  82   --> rounds to 80

                                       20 x 80 = 2 x 8 with two zeros

                                                     = 1 6 0 0

b) 54   --> rounds to 50

  671   --> rounds to 700

                                       50 x 700 = 5 x 7 with three zeros

                                                       = 3 5 0 0 0

c) 207   --> rounds to 200

  643   --> rounds to 600

                                       200 x 600 = 2 x 6 with four zeros

                                                          = 1 2 0 0 0 0

6 0
3 years ago
A solid cube of side 18 cm is cut into 8 cubes of equal volume what will be the side of the new cube ? Also find the ratio betwe
maks197457 [2]

The volume of the original cube = 18^3 = 5,832 cubic cm

5,832 / 8 cubes = 729 cubic cm.

Side length = Cubicroot729 = 9

The side length is 9 cm

5 0
4 years ago
Read 2 more answers
Man borrows 26,000 for 3 years with simple interest 1.7 percent determine the amount of money repay after three years
Naya [18.7K]

Answer:

$1,326

Step-by-step explanation:

You are going to want to use the simple interest formula for this.

I=Prt

<em>I = interest amount </em>

<em>P = principal amount </em>

<em>r = interest rate</em>

<em>t = time</em>

First, change 1.7% into its decimal form:

1.7% -> \frac{1.7}{100} -> 0.017

Next plug in the values into the equation:

I=26,000(0.017)(3)

I=1,326

After three years, he must repay $1,326.

4 0
3 years ago
PLEASE HELP ME ASAP I HAVE 2 QUESTIONS
olganol [36]
1.) Yes they have enough flour for both of their recipes because if you find the common denominator for both of the flour cups of flour for the recipe which of course the denominator is going to be 12. so the equation would look like this 1 9/12+2 4/12. You add the mixed numbers which it makes 3 and you add the fractions which make it 13/12 you add the 1 to the 3 which makes it have enought flour. So they have 1/12 of it left over. 
2.)  It snowed more yesterday. It snowed 11/20 more inches. hope that helped
6 0
3 years ago
Read 2 more answers
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