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2 years ago

9. An object that has traveled 400 km in 50 hours, what was the average speed?

Mathematics

1 answer:

Effectus [21]2 years ago

4 0

Answer:

its 8

Step-by-step explanation:

Divide 400÷50

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What is 4 1/3 × 2 3/5? express it in lowest terms

soldier1979 [14.2K]

We have,

$4\dfrac{1}{3}\cdot2\dfrac{3}{5}=\dfrac{13}{3}\cdot\dfrac{13}{5}=\dfrac{13\cdot13}{3\cdot5}=\dfrac{169}{15}=\boxed{11.2\bar{6}}$

To express periodic number calculated we use:

$x=11.2\bar{6}\\10x = 112.\bar{6}\\100x=1126.\bar{6}\\90x=100x-10x\Longrightarrow90x=1126.\bar6-112.\bar6\\90x=1014\\x=\dfrac{1014}{90}=\boxed{11\dfrac{24}{90}}$

Hope this helps.

r3t40

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2 years ago

Which relationship is a function?

Ivan

Step-by-step explanation:

these are the functions

and the others are not a functions because the domain can't match to more than one

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2 years ago

Geometry help would be greatly appreciated.

sweet [91]

we hat is the measure of ABC Is15

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2 years ago

Use the stem and leaf plot shown. What is the mean time (to the nearest min) that is spent waiting at the doctors office

harina [27]

Answer:

34 minutes.

Step-by-step explanation:

I wrote all the numbers given so, 7, 15, 18, 24, 29, 29, 30, 31, 36, 45, 48, 61, 73. Then, you add them up which gives you 446, then you divide 446 by the number of digits given so it is 446/13=34.31.

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2 years ago

Write and evaluate the expression. Two less than the quotient of a number and four, increased by ten; evaluate when m = 12.

NeX [460]

Answer: 9

Step-by-step explanation: So we need to write and solve an equation to solve for m, which is 12. Simply plug in 12 for m in the equation.

Step 1: 2-x/4+10

Step 2: 2-12/4+10 Plug 12 in for x

Step 3: 2-3+10 12 divided by 4 is 3 and 2-3 is -1

Step 4: -1+10=9 -1 + 10 is 9

5 0

2 years ago