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
sergejj [24]
3 years ago
6

The number of students at a high school was decreased by 30% to 420 after the senior students graduated how many students were a

t the high school before the decrease
Mathematics
1 answer:
olchik [2.2K]3 years ago
5 0

Answer:

Step-by-step explanation:

s(1-30/100)=420

s(100-30)/100=420

s(70/100)=420

s(7/10)=420

7s=4200

s=600

You might be interested in
Z/2 + 3 = -80<br><br> The solution is z=
nirvana33 [79]

Answer:

z = -166

Step-by-step explanation:

1. Subtract 3 from both sides to get z/2 = -83

2. Multiply 2 by both sides to get z = -166

z = -166

8 0
3 years ago
Read 2 more answers
Write an equation that could be used to find the value of x using the interior angles of ∆BDC, then solve it.
Alecsey [184]

9514 1404 393

Answer:

  x = 16

Step-by-step explanation:

Either or both of the right triangles can be used to find x. Or, triangle ABC could be used. All numbers are assumed to be degrees.

<u>Using ∆ABD</u>

  55 +90 +2x+3 = 180

  2x = 32 . . . . . . subtract 148

  x = 16

<u>Using ∆BCD</u>

  50 +90 +2x+8 = 180

  2x = 32 . . . . . . subtract 148

  x = 16

<u>Using ∆ABC</u>

  55 +(2x +3) +50 +(2x +8) = 180

  4x = 64 . . . . . . . subtract 116

  x = 16

6 0
3 years ago
1) What is the volume of a figure with that is 3 inches wide, 5 inches tall and 8 inches long?
Romashka-Z-Leto [24]
The volume is 120 cubic inches.
6 0
3 years ago
. If Gene gets two more strikes (scores of 10), what is his new average? 
dedylja [7]
I think u r sopost to multiply 10 times 2

3 0
3 years ago
Help me if your to cool for school...
tankabanditka [31]

Answer:

i think its set B..........

4 0
2 years ago
Read 2 more answers
Other questions:
  • Evaluate 10.2x + 9.4y when x=2 and y=3
    9·1 answer
  • The radius of the base of a cylinder is 28 cm and its height is 48 cm. Find the surface area of the cylinder in terms of π. 4,23
    6·1 answer
  • How do I solve this complex multi-step equation 2x + (-2 )= 10x - 4 ?
    10·2 answers
  • 46. Please due tomorrow
    7·2 answers
  • (I’m african) My science teacher in 7th grade gave me a paper for this science camp and i live in georgia in a small town. they
    12·1 answer
  • If f(x)=x^2and g(x)=6x+4,for which value of x does (f+g) =0
    8·1 answer
  • If c = 25 and B = 50 degrees, find a.
    15·2 answers
  • Please help I'm so confused pls​
    10·1 answer
  • Rectangle PQRS with vertices P(- 6, 9) , Q(3, 6); R(0, - 9) and S(- 9, - 6)
    7·1 answer
  • What is 12.5% of 72?<br> A. 9<br> B. 10<br> C. 12.5<br> D. 90
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!