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timama [110]
2 years ago
9

Question 2 Answer Solve

Mathematics
2 answers:
Lelu [443]2 years ago
8 0

<u>Answer:</u>

  • Option B is correct.

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

<u>To subtract fractions, we must check if the denominators of both fractions are the same.</u>

  • 2/5 - 1/7
  • => 2 x 7/5 x 7 - 1 x 5/7 x 5
  • => 14/35 - 5/35

<u>Now, let's subtract for the result.</u>

  • => 9/35

Hence, <u>Option B is correct.</u>

Hoped this helped.

BrainiacUser1357

baherus [9]2 years ago
3 0

Answer:

9/35

LCM of 7 and 5 = 35

Step-by-step explanation:

\frac{2}{5} -\frac{1}{7} \\\\\frac{2*7}{5*7} -\frac{1*5}{7*5} \\\\\frac{14}{35} - \frac{5}{35}\\\\\\\frac{14-5}{35} \\\\\frac{9}{35}

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Answer:

9

Step-by-step explanation:

You substitute 9 for x and 9 - 3 = 6


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4 0
2 years ago
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shutvik [7]
30*5=150
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7 0
3 years ago
Sarah has 2,500 pictures saved to her camera roll. She wants to free up some space on her phone. She will delete a total of 50 p
weeeeeb [17]

Answer:

x = number of days

y = number of remaining photos saved to her camera roll.

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

The number of pictures saved in the camera roll (2,500) minus the amount of photos that she deletes per day (50) multiplied by the number of days (x) must be equal to the number of photos remaining.

y =2,500- 50x

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Where x is the number of days and y is the number of remaining photos.

Feel free to ask for more if needed or if you did not understand something  

5 0
3 years ago
A used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 pe
masha68 [24]

Answer:

30 CDs and 10 Videos were sold.

Step-by-step explanation:

Given that a used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 per CD and 6.00 per video.

The sales for both CDs and videos totaled to 180.00.

Let CDs be x and Videos be y

Then we have x+y =3040

and 4x+6y = 180

Two simultaneous equations in two variables and can be solved by elimination method

multiply I equation by 4 and subtract from II.

2y = 20

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30 CDs and 10 Videos were sold.

4 0
2 years ago
Jacob leaves his summer cottage and drives home. After
krok68 [10]

Answer:

A linear relationship can be written as:

y = a*x + b

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If this line passes through the points (a, b) and (c, d) then the slope can be written as:

a = (a - c)/(b - d)

Here y will represent the distance between Jacob and his house, and the variable x represents the time that he has ben driving.

In this case, we know that after driving for 5 hours, he is 112km from home.

Then we can write this point as (5h, 112km)

We also know that after 7 hours he is 15km from home.

Then we can write this point as (7h, 15km)

Then the slope of this function will be:

a = (15km - 112km)/(7h - 5h) = -48.5 km/h

Then the equation is:

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then the equation will be:

y = (-48.5 km/h)*x + 354.5 km

Now we want to answer: How long had Jacob been driving when he was 209 km from  home?

Then we need to only replace y by 209km, and solve for x:

209km = (-48.5 km/h)*x + 354.5 km

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-145.5km =  (-48.5 km/h)*x

-145.5km/( -48.5 km/h) = x = 3h

So he is 209km away from his home after driving for 3 hours.

6 0
3 years ago
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