What’s the answer, pls help me

Answer:

6 students

Step-by-step explanation:

Let the number of notebooks be $x$ and the number of students be $y.$

If there are 5 notebooks per student, we have:

$x-5y=7$

Simliairly, we have 7 notebooks per person, which is:

$x-7y=-5$

Then, using system of equations, we can add multiply the first equation by $-1$ and then add.

We would have:

$-1(x-7y=-5)=-x+7y=5$

Then, adding gives us:

$2y=12$

$y=6$

There are 6 students in the class.

Let x represent the number of students that are there in the class.

The teacher her gives his students 5 notebooks each, and still has 7 notebooks left.

The number of note books = 5x + 7    (1)

The teacher her gives his students 7 notebooks each, and was 5 notebooks short.

The number of note books = 7x - 5   (2)

Therefore equating equations 1 and 2:

5x + 7 = 7x - 5

7x - 5x = 7 + 5

2x = 12

x = 6

There are 6 students in the class.

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Answer:

about 3000 seats

Step-by-step explanation:

22,076 rounded to the nearest thousand is 22,000 and 19,345 rounded to the nearest thousand is 19,000

when you subtract that you get 3,000

The exact number is 2,731 and when it is rounded to the nearest thousand it is 3000

Answer:

The answer is B, $0.26

Step-by-step explanation:

$48 * 12 =$576

- 12 months in a year

$223,050 / $100 =$2230.50

$576 / $2230.50 =$0.26

hi,please quit school instead

Answer:

since 4y=12 and 4y=2x then 4y=12=2x or 12=2x

Based on the information the amount she earn is: c. $1,016. 50 .

Hours worked= 45 -40

Hours worker=5 hours

Earning for first 40 hours

Earning = 40 × 21.40

Earning=$856

Earning for over 40 hours

Earning = 5 × 32.10

Earning=$160.5

Total earning

Total earning = $856 + $160.5

Total earning=$1,016.50

Inconclusion the amount she earn is: c. $1,016. 50 .

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Answer:

The milk is priced at $1.74/gallon

Step-by-step explanation:

If Jenny started out with $10 and ended up with $1.30 in change, she must have spent $10 - $1.30, or $8.70.

                                                        $8.70

Then the unit price for the milk is ---------- = $1.74 per gallon

                                                         5 gal

Answer:

im pretty sure its 10.73, multiply 3.7 and 5.8 then divide 2

Answer:

x <= -42.5

Step-by-step explanation:

65 - 2x >= 150

-2x >= 150 - 65

-2x >= 85

2x <= -85

x <= -85/2

x <= -42.5

Answer:

...........

[tex]⟼15d + 100[/tex]

Answer:

Step-by-step explanation:

Given function:

Find f(-8):

f(-8)

Answer:

pizza , or KFC, chic fil a

Answer:

3/8

Step-by-step explanation:

Answer:

2) Both are decreasing

5) Function I has a greater y-intercept than function II

Step-by-step explanation:

     [] They both have negative unit rates / slope (m is the slope in y = mx + b)

     [] -2 is larger than -6, so function I has a greater y-intercept than function II (b is the slope in y = mx + b)

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

home within our geographic footprint.

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Step-by-step explanation:

the total is 8+5+7=20

the probabliliy that its gonna be 7/20

this fraction cannot be reduced

Answer:

c

Step-by-step explanation:

S=B+1/2Pl

-b from both sides

s-b=1/2Pl

x2 to both sides

2(S-B)=Pl

divide both sides by l

you get c

Answer: ≈ 26 lb

Step-by-step explanation:

11,800 grams x [tex]\frac{1 kilograms}{1000 grams}[/tex] x [tex]\frac{1 pound}{0.45kilograms}[/tex] ≈ 26 lb

Answer:

18 000

Step-by-step explanation:

One kg is 1000 grams.  18 kg are 18 x 1000 = 18 0000 grams.

Answer:

the would be m=4

Step-by-step explanation:

Answer:

40 miles, 2000seconds or 33minutes and 20 seconds

Step-by-step explanation:

a. multiple time by miles/hour -> 40*60/60=40 so 40 miles

b. 60+12=72 so her new speed is 72mph. next, to find the time we need to divide distance by 1/mph -> 40* 1/(72/60)=40*60/72=100/3 which is 2000seconds or33minutes and 20 seconds

Answer:

Step-by-step explanation:

To find out if a point (x, y) is on the graph of a line, we plug in the values and see if we get a true statement, such as 10 = 10.

Answer:

Conservative. Replication produces one helix made entirely of old DNA and one helix made entirely of new DNA.

Semi-conservative. Replication produces two helices that contain one old and one new DNA strand.

Dispersive.

Step-by-step explanation:

Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.

Answer:

Answer to B:

4

Answer to C:

-4

Answer to D:

2

Answer:

She has 9 left

Step-by-step explanation:

15 - 6 = 9

Hope this helps! Brainliest would be appreciated!

Step-by-step explanation:

p^m × p^n .....since the base is the same, add the powers

p^(m + n)

p^m + n

Answer:

-6/13

Step-by-step explanation:

Step-by-step explanation:

Since,

[tex]60\%25 = 15[/tex]

Another equation that equals 15 is

[tex]25 \times 0.6 = 15[/tex]

Answer:

C

Reasoning:

You should add a period to fix the run-on sentence because they're two different ideas. (They don't fit in the same sentence.)