1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena-s [515]
2 years ago
13

Two classrooms have a total of 45 people in them. The first class is a math class with 5 more students that the science class. H

ow many are in each class?
Mathematics
2 answers:
Basile [38]2 years ago
5 0

Answer:

20 students in science class, 25 in math

Step-by-step explanation:

so let 1 classroom= x

so the other classroom= x+5

if there is a total of 45 students

x+x+5=45

2x=45-5

2x=40

x=20

Elenna [48]2 years ago
5 0

Answer:20/25

Step-by-step explanation:

20 in science, 25 in math = 45 total!

You might be interested in
Mr. Allway’s math class surveyed all the seventh-grade students to find out their favorite sport. The following circle graph sho
JulijaS [17]

Answer:

101 is the answer of the question

3 0
2 years ago
Read 2 more answers
Solve the compound inequality and graph<br> Please help! :)
frozen [14]

Answer:

Step-by-step explanation:

x+4≥10 and x-6>-15

x≥10-4 and x>-15+6

x≥ 6 and x>-9

combining the two

x>-9

8 0
3 years ago
3x+2y=23<br> 1/2x-4=y<br><br> What should I do for this one...? I dont really understand
Hitman42 [59]

Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.


3x+2(1/2x-4)=23\\

Distribute

3x+x-8=23

Combine like terms

4x-8=23

Add 8 to both sides

4x=31

Divide by 4

and x=31/4

Plug this value in for x

31/4*1/2-4=y

Simplify

31/8-4=y

Multiply everything by 8 and simplify

31-32=8y\\-1=8y

Divide.....

y=-1/8


Your answers are:

y=-1/8\\x=31/4



8 0
2 years ago
Find an equation for the line with the given properties. Express your answer using the general form or the slope-intercept form
Damm [24]

Answer:

y=-3x+4

Step-by-step explanation:

To get the equation in the slope-intercept form first, put the equation in slope-point form using the information given. The slope-point form is y-(-2)=-3(x-2). Then solve for y.

Distribute -3 to (x-2),

y-(-2)=-3x+6

Then, add -2 to both sides,

y=-3x+4

This is your final answer; the slope is -3 and the y-intercept is 4. There are also a few other ways to solve but I find this the easiest.

3 0
2 years ago
Which products result in a perfect square trinomial? Select three options.
Kazeer [188]

Answer:

Second option: (xy+x)(xy+x)

Third option: (2x-3)(-3+2x)

Fifth option: (4y^2+25)(25+4y^2)

Step-by-step explanation:

By definition, a perfect square trinomial can be obtained by squaring binomials.

Then:

(a+b)^2=(a+b)(a+b)=a^2+2ab+b^2\\\\(a-b)^2=(a-b)(a-b)=a^2-2ab+b^2

Knowing this, to obtain a perfect square trinomial, the binomials that you multiply must be equals.

Therefore, the products result in a perfect square trinomial are:

(xy+x)(xy+x)=(xy+x)^2=(xy)^2+2(xy)(x)+x^2=x^2y^2+2x^2y+x^2

(2x-3)(-3+2x)=(2x-3)^2=(2x)^2-2(2x)(3)+3^2=4x^2-12x+9

(4y^2+25)(25+4y^2)=(4y^2+25)^2=(4y^2)^2+2(4y^2)(25)+25^2=16y^4+200y^2+625

8 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for y. I REALLY NEED HELP ON THIS!! 2(3y+6x)=2(5y-2x)
    7·1 answer
  • Original price:30 End price:45
    14·1 answer
  • What is the value of expression? 5−8 • 5−4<br> a. 532<br> b. 54<br> c. 5−4<br> d. 5−12
    12·1 answer
  • If Jay ran 1 mile in 10 minutes on Monday, 2 miles in 20 minutes on Tuesday,
    11·1 answer
  • True of False:
    5·1 answer
  • Does anybody know the answer?
    8·2 answers
  • PLEASE ANSWER ASAP !!!!!!!!!!!!!!!!!!! WILL GET BRAINLEST IF CORRECT!!!!!!!!!!!!!!!!!!!!!!
    14·1 answer
  • Plz help me I dont understand
    5·1 answer
  • The current value of an investment is 125 percent of its initial value.The increase in value is $10million.What was the initial
    8·1 answer
  • Order the numbers from least to greatest. 15, 20, –13, –20, –9, 7 A. 20, 15, 7, –9, –13, –20 B. –20, –9, 15, 20, –13, 7 C. 7, –1
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!