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
Anni [7]
3 years ago
7

There are 4 boys for every 10 students in Ms. Day´s math class. If there are 30 girls in her class, how many boys are there? ( w

ith explanation )
Mathematics
2 answers:
Furkat [3]3 years ago
7 0

Answer:

12

Step-by-step explanation:

4/10 x 30

Multiply

12 boys

kogti [31]3 years ago
7 0

Answer:

20

Step-by-step explanation:

30=60%

30÷6=5(10%)

5*4= 20

40%=20

You might be interested in
Mrs. Calvino's classroom has 6 rows of desks. Each row has 4 desks. Explain how to use skip counting to find how many desks ther
natali 33 [55]

Answer:

24 desks

Step-by-step explanation:

You can go 6, 12 ,18, 24

or you can go 4,8,12,16,20,24

either way works

counting by 4 6 times or counting by 6 4 times

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

6 0
4 years ago
Read 2 more answers
American households increasingly rely on cell phones as their exclusive telephone service. It is reported that 50.4% of American
OLga [1]

The variance of the binomial distribution of the number of households with landline service is 2.

<h3>What is the binomial probability distribution?</h3>

It is the probability of <u>exactly x successes on n repeated trials, with p probability</u> of a success on each trial.

The variance of the distribution is given by:

V(X) = np(1 - p)

In this problem, the parameters are given as follows:

n = 8, p = 0.504.

Hence the variance is given by:

V(X) = 8 x 0.504 x 0.496 = 2.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

5 0
2 years ago
What is the y intercept
quester [9]

Answer:

-2

Step-by-step explanation:

line crosses the y- coordinate (0,-2)

7 0
3 years ago
1 5 (25−5a)=4−a solve for a
Vitek1552 [10]

Answer:

5.01 is your answer.

Step-by-step explanation:

What you do is you have to get a by itself.

<em>15 (25 - 5a) = 4 - a</em>

<em>375 - 75a = 4 -a</em>

<em>-74a + 375 = 4</em>

<em>-74a = -371</em>

<em>a = 5.01 rounded to the nearest hundreth</em>

5.01 is your answer.

5 0
3 years ago
Read 2 more answers
50 points!!
snow_lady [41]

Answer:

(x-8) (x+7)

Step-by-step explanation:

x^2 -x-56

We want to factor this problem.

What two numbers multiply to negative 56 and add to -1

-8 *7 = -56

-8+7 = -1

We can use -8 and 7

(x-8) (x+7)

Check:

FOIL

first: x*x =x^2

outer: 7x

inner:-8x

last: -8*7 = -56

Add this together

x^2 +7x-8x -56 = x^2 -x-56

3 0
3 years ago
Other questions:
  • If I have a pint of blueberries what is 10% of that? Please answer ASAP thank u very much!
    14·1 answer
  • 56÷38472<br><img src="https://tex.z-dn.net/?f=56%20%5Csqrt%7B38472%20%3D%20%7D%20" id="TexFormula1" title="56 \sqrt{38472 = } "
    15·1 answer
  • Sarina throws a ball up into the air, and it falls on the ground nearby. The ball's
    11·2 answers
  • I need help with this question. PLZZ HELP!!!
    8·1 answer
  • 7.4 Factoring with a Leading Coefficent Greater Then One
    6·1 answer
  • If b is inversely proportional to c, and b is 5 when c is 12, find b when c = 20
    11·1 answer
  • Hi please help :)))))))
    13·2 answers
  • Fertilizer comes in 15 pound bags and costs $16.11. Each bag will cover 3,500 square feet. Your lawn is 1/3 acre. What will it c
    9·1 answer
  • HELP ASAP HELP I NEED HELP WILL MARK BRAINLIST
    15·2 answers
  • Suppose a polynomial of degree 4 with rational coefficients has the given numbers as zeros. Find the other zero
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!