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natali 33 [55]
3 years ago
12

3x - y = 7

Mathematics
1 answer:
nataly862011 [7]3 years ago
6 0
3x - y = 7
6x - y = 10

if you subtract the second equation from the first to eliminate y you get:
3x-y-(6x-y)=7-10
3x-y-6x+y=-3
-3x=-3

so option C) -3x=-3 is the solution

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Kayla hikes 25 meters in 13.7 seconds. Which of the following closest to how far she will hike in 6 minutes, if she maintains th
Nonamiya [84]

<u>Answer:</u>

197.28 meters in 6 minutes

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

13.7 seconds ÷ 25 meters = 0.548 meters in 1 second

6 minutes = 360 seconds (6 minutes x 60 seconds in every minute = 360 seconds)

0.548 meters in 1 second x 360 seconds = 197.28 meters in 6 minutes

<em>Hopefully this helped! Sorry if wrong. You are loved and you are beautiful/handsome!</em>

-Bee

7 0
3 years ago
PLEASE ANSWER ASAP
ss7ja [257]

Answer:

Approximately 0.51

Step-by-step explanation:

3 0
2 years ago
Find the area of the shaded regions. Give your answer as a completely simplified exact value in terms of pi (no approximations)
Kisachek [45]

Answer:

40π in^2

Step-by-step explanation:

360°/72°=5

so, each of the two shaded regions are 1/5 of the circle.

the formula for finding the area of a circle is πr^2, so:

area for one of the shaded regions:

1/5πr^2

1/5π(10)^2

1/5π100

20π in^2

this means that the area for one of the shaded regions is 20π. however, since there are two of them:

2(20π)=40π

so, the area of the shaded regions is 40πin^2

5 0
3 years ago
What is 4 5/6 as a decimal ? - show work plz:(
bulgar [2K]

Turn the fraction into a improper fraction.

4 5/6 -> 29/6

Divide both numbers.

29 / 6 = 4.833...

Best of Luck!

4 0
3 years ago
Read 2 more answers
PLS HELP ME ASAP FOR 1, 2, 3, and 4 (SHOW WORK!!) + LOTS OF POINTS!!
Lera25 [3.4K]
1/2in = 16 mi
2 3/4 in without whole numbers [(denominator ×whole) + numerator] / denominator
4×2 = 8 +3 = 11/4
Find common denominator for 1/2 and 11/4 (common D Is 4)
Multiply 1/2 by 2/2
2/4 in = 16 mi divide this by 2
2/4 ×1/2 = 1/4
16 /2 = 8
1/4 = 8
1/4 goes into 11/4 11 times
Multiply 8 times 11
88 miles (D)

End zone to end zone is = length so his scale is 6 in and in real life it is 360 ft
To find scale divide 360 by 6
1in = 60 ft (B)

160 ft wide
(divide 160 by 60 ft ) fraction
160/60 is a fraction now simplify
16/6
Common factors of both numbers is 2
Simplify by 2
8/3
Make into whole number fraction
3 goes into 8 two times (2×3=6)(2 becomes whole number) while there's is 2 left over( 8 -6=2) (becoming the numerator)
2 2/3 in (B)

120 ft long
80 ft wide

24 in is scale of "long"
Divide 120 by 24
120÷24=5
So 5in in scale equals 1ft in real life
To find width in scale divide 80 by 5
80/5= 16in (A)

If you have any trouble understanding feel free to let me know I will try to explain as best as I can :)
5 0
3 years ago
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