All categories

3 years ago

During lunch on Friday, 45 students in the 7th

Mathematics

2 answers:

goldenfox [79]3 years ago

8 0

If 25% is 45 students, then 100% is 180 students. There are 180 students in the entire 7th grade class.

marin [14]3 years ago

4 0

Answer:

135

Step-by-step explanation:

You might be interested in

PLEASE HELP!!!!!!!!!!!!!! DDDD: Please answer correctly!

ValentinkaMS [17]

Answer:

correct answer is G!!

Step-by-step explanation:

if you break the equation apart, you get

$200 giftcard - 4 gifts each worth x dollars = and leaves her with $80.

Hope this helps! :-)

8 0

2 years ago

Read 2 more answers

Enter the number in sdentific notation. 86,257 = Hint: Move the decimal left 4 places.

marin [14]

Answer:

8.6257*10^4

Step-by-step explanation:

move the decimal left 4 places

multiply 10^however many decimal places you moved

boom

6 0

3 years ago

If the line passing through the points (a, 1) and (−2, 6) is parallel to the line passing through the points (−12, 9) and (a + 2

iren2701 [21]

$\frac{6 - 1}{ - 2 - a} = \frac{9 - 1}{ - 12 - a - 2} \\ \frac{5}{ - 2 - a} = \frac{8}{ - 14 - a} \\ 16 + 8a = 70 + 5a \\ 3a = 54 > > a = 18$

8 0

3 years ago

Solve the equatuon x/2-(2/(x+1))=1 x=?

Snezhnost [94]

$\frac{x}{2}-\frac{2}{x+1}=1$

We have 2 denominators that we need to get rid of. Whenever there are the denominators, all we have to do is multiply all whole equation with the denominators.

Our denominators are both 2 and x+1. Therefore, we multiply the whole equation by 2(x+1)

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]$

Then shorten the fractions.

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]\\x(x+1)-2(2)=1(2x+2)$

Distribute in all.

$x^2+x-4=2x+2$

We should get like this. Because the polynomial is 2-degree, I'd suggest you to move all terms to one place. Therefore, moving 2x+2 to another side and subtract.

$x^2+x-4-2x-2=0\\x^2-x-6=0\\$

We are almost there. All we have to do is, solving for x by factoring. (Although there are more than just factoring but factoring this polynomial is faster.)

$(x-3)(x+2)=0\\x=3,-2$

Thus, the answer is x = 3, -2

7 0

2 years ago

Your friend claims that there is not enough information given to find the value of x.Is your friend correct?

Kay [80]

No not a full question

6 0

3 years ago