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
grin007 [14]
3 years ago
10

45% of all 1st graders at Sierra Elementary School are female students. This year there are 54 female 1st graders at Sierra Elem

entary School. How many 1st graders are there at Sierra Elementary School this year?
Mathematics
2 answers:
myrzilka [38]3 years ago
5 0

Answer:

number of first grader at Sierra elementary school = 120  

Step-by-step explanation:

The question says 45% of 1st graders at Sierra Elementary school are female student . This year there are 54 female 1st graders at Sierra Elementary school .The number of 1st graders at Sierra elementary school can be calculated below .

Let

the number of 1st grader = a

45 % of a = female population

This year the female 1st graders at the Sierra elementary school are 54. This can represented as follows

45% × a = 54

45/100 × a = 54

45a/100 = 54

cross multiply

45a = 5400

divide both sides by 45

a = 5400/45

a = 120

number of first grader = 120  

Anit [1.1K]3 years ago
3 0

Answer:

There are 120 1st graders at Sierra Elementary School this year

Step-by-step explanation:

Let n represent the total number of 1st graders at Sierra Elementary School

Since 45% of all 1st graders at Sierra Elementary School are female students and this year there are 54 female 1st graders, 45% of n is equal to 54

→ n(\frac{45}{100}) = 54

→ 45n = 5400

→ n = 120

You might be interested in
What is the period of the graph of y=2 cos( pi 4 x)+3?<br><br> A. 4/pi<br> B. pi/4<br> C. 8<br> D. 2
mojhsa [17]

Answer:

Your answer is C. 8.

Step-by-step explanation:

Amplitude: 2

Period: 8

Vertical Shift: 3

8 0
2 years ago
Will someone help I'm up early trying to do this
zimovet [89]
D. 3g -2/3 Have a good day :D


7 0
3 years ago
Read 2 more answers
Count from 170 through 410 U team tens and hundreds circle at least one benchmark number
mario62 [17]
I might not be understanding what you mean but I think it is by counting 10s. 170,180,190,200,210,220,230,240,250,260,270,280,290,300,310,320,330,410.
5 0
3 years ago
PLEASE HELP ME . how can the converse of the Pythagorean theorem help you determine whether the roped off area is in the shape o
trapecia [35]

Step-by-step explanation:

From the Pythagorean theorem we have:

a^2+b^2=c^2           <em>subtract b² from both sides</em>

a^2=c^2-b^2\to a=\sqrt{c^2-b^2}

Same:

b=\sqrt{c^2-a^2}

4 0
3 years ago
A sweater is on sale for 40% off the original price of $44. What is the sale price of
kati45 [8]

Answer:

the answer is B.$17.60

8 0
3 years ago
Read 2 more answers
Other questions:
  • Tan (25pi/2) = ___<br><br> A). 1<br> B). 0<br> C). -1<br> D). Undefined
    13·2 answers
  • Which table represents a linear function?
    13·2 answers
  • Please help thanks !
    11·1 answer
  • If angleA and angleB are vertical angles, and angleA = 38°, find the measure of angleB. A. B = 7° B. B = 57° C. B = 38° D. B = 1
    15·2 answers
  • Find the mean of this data set: (Thank You all in advance!!!!!!!!!!!!!)
    8·2 answers
  • In science class, Sarah calculates the mass of a planet to be 918,000,000,000,000,000,000 kg. What is the mass of the planet in
    10·1 answer
  • Find the equation of the line.
    14·1 answer
  • 1.485 x 106 and 4.95 x 102
    15·1 answer
  • Solve the following....<br><img src="https://tex.z-dn.net/?f=-16y%20%3D%2022%20%2B%206x%5C%5C-11y%20-%204x%20%3D%2015" id="TexFo
    10·1 answer
  • Select the correct answer.In triangle ABC, AB = 12, BC = 18, and m B = 75° what are the approximate length of side AC and measur
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!