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Lubov Fominskaja [6]
3 years ago
9

Thanks :/Help Anyone Idc anymore I just need an answer I’m sick of my math hw I have been doing for the past 3 hours :/

Mathematics
2 answers:
musickatia [10]3 years ago
8 0

Distribute the 4 into the parenthesis by multiplying the numbers by 4.

New expression is:

24m-28

poizon [28]3 years ago
5 0

24m - 28 is your answer 4 times 6 is 24m and 7 times 4 is 28

Hope this helps and have a blessed day

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Bill wanted to try out different water craft he went 62 mikes downstream in a motor boat and 27 mikes down stream on a jest ski
valina [46]

Answer:

The speed on motorboat is 20 mph

Step-by-step explanation:

here, we want to find the speed on the motorboat

if he has a speed of x mph on the motor boat, his speed on the ski will be (x + 10) mph

The total hours is 4 hours

Mathematically; speed = distance/time

Time on ski is 27/x+ 10

Time on motor boat is 62/x

The addition of both is 4

Thus;

27/(x + 10) + 62/x = 4

27(x) + 62(x + 10) = 4(x)(x + 10)

27x + 62x + 620 = 4(x^2 + 10x)

89x + 620 = 4x^2 + 40x

4x^2 -49x-620 = 0

using the quadratic formula;

{-b ± √(b^2-4ac)}/2a

where a = 4, b = -49 and c = -620

= 49 ± √(-49)^2-4(4)(-620)/8

So we have

49+ 111/8 or 49-111/8

Speed cannot be negative

(49 + 111)/8

= 20 mph

3 0
2 years ago
a rectangular prism has a volume of 300 cm squared if the scale factor of the second rectangular prism is 3.5 what is the volume
velikii [3]
Volume of rectangular prism= 30 cm³
Formula for volume of rectangular prism:
V=whl
Scale factor of second prism= 3.5 
Which is 3 and a half times greater than the 1st one.
So volume of 2nd prism = 3. 5 x 300 
V= 1050 cm³

Answer: Volume of second Rectangular Prism is 1050 cm³
6 0
3 years ago
Q and R are independent events. if P(Q)= 1/4 and P (R)= 1/5, find P(Q and R)
Setler79 [48]

Answer:

1/4 * 1/5 = 1/20

3 0
3 years ago
Use place-value patterns to complete the table. 100 is ten times as much as 1/10 of?
Eva8 [605]
100 is ten times as much as 1/10 of a hundred

ur multiplying n then dividing by ten so they cancel each other out 

theres no table so idk if this is what u wanted but that's the answer
hope it helps

3 0
3 years ago
540 seconds how many minutes
Ira Lisetskai [31]
1 second = 0.0167 minute
540 seconds = 540 * 0.0167 ≈ 9 minute

Hope this helps :)
8 0
3 years ago
Read 2 more answers
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