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
Marina86 [1]
3 years ago
7

The ratio of boys to girls is 7:8 if there were 42 boys how many girls are there

Mathematics
2 answers:
Flauer [41]3 years ago
6 0
Ratio of boys to girls are 7:8
and there are 42 boys.
42/7 will be the multiplier because you know the amount and the ratio.
so multiplier is 42/7 = 6
now we need to multiply 8x6=48
gladu [14]3 years ago
5 0
x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}  x^{123}
You might be interested in
Again asap and sorry for the mess…
skelet666 [1.2K]

Answer:

185 shrubs

Step-by-step explanation:

ratio plant : 1% = 5 : 1%

if the percent of shrubs in the garden is 37%, according to my ratio. every 1% is 5 plants, therefore, 37% = 37 x 5 = 185

6 0
2 years ago
Help help help!! Does anyone know number 1 and 2?
iren [92.7K]
1. 7 + 15 + 12 + 5 + 5 + 10 = 54
54 x 2.5 = $135
The correct answer is $135

2. A^2 + 9^2 = 22^2
A^2 + 81 = 484
A^2 = 403
Square root of a and 403
A= 20.7
20.7 + 22 + 9 = 51.7
The correct answer is (3)
3 0
3 years ago
Please help, due tomorrow. will give brainlist
Tatiana [17]

Step-by-step explanation:

By Remainder Theorem, f(5) = 91.

=> (5)³ - 4(5) + k = 91

=> 125 - 20 + k = 91

=> 105 + k = 91

=> k = -14.

8 0
3 years ago
A bus travels on an east-west highway connecting two cities A and B that are 100 miles apart. There are 2 services stations alon
melamori03 [73]

Answer:

51/4

Step-by-step explanation:

To begin with you have to understand what is the distribution of the random variable. If X represents the point where the bus breaks down. That is correct.  

X~ Uniform(0,100)

Then the probability mass function is given as follows.

f(x) = P(X=x) = 1/100  \,\,\,\, \text{if} \,\,\,\, 0 \leq x \leq 100\\f(x) = P(X=x) = 0  \,\,\,\, \text{otherwise}

Now, imagine that the D represents the distance from the break down point to the nearest station. Think about this, the first service station is 20 meters away from city A, and the second station is located  70 meters away from city A then the mid point between 20 and 70  is (70+20)/2 = 45 then we can represent D as follows

D(x) =\left\{ \begin{array}{ll}  x  & \mbox{if } 0\leq x \leq 20 \\  x-20 & \mbox{if } 20\leq x < 45\\                70-x & \mbox{if } 45 \leq x \leq 70\\                x-70 & \mbox{if } 70 \leq x \leq 100\\ \end{array}\right.

Now, as we said before X represents the random variable where the bus breaks down, then we form a new random variable Y = D(X), Y is a random variable as well, remember that there is a theorem that says that

E[Y] = E[D(X)] = \int\limits_{-\infty}^{\infty} D(x) f(x) \,\, dx

Where f(x) is the probability mass function of X. Using the information of our problem

E[Y] = \int\limits_{-\infty}^{\infty}  D(x)f(x) dx \\= \frac{1}{100} \bigg[ \int\limits_{0}^{20} x dx +\int\limits_{20}^{45} (x-20) dx +\int\limits_{45}^{70} (70-x) dx +\int\limits_{70}^{100} (x-70) dx  \bigg]\\= \frac{51}{4} = 12.75

3 0
3 years ago
NEED HELP!!!!!<br> Heres the question
Semenov [28]

Answer:

A. 5(-20)

Step-by-step explanation:

Since she repeatedly withdrawals money, the answer would be negative, so you can say that the other answers are definitely wrong.

Hope this helps :)

3 0
3 years ago
Other questions:
  • A box of soup contains four servings each serving has 4 and 1/2 grams of fat and 720 mg of sodium if someone was really hungry a
    14·1 answer
  • ASAP NO WORK JUST ANSWER
    6·2 answers
  • Find the value of this expression if x = 3<br> and y = -1.<br> xy²<br> 5
    9·1 answer
  • 279 for 9 tickets how do I solve this?
    6·1 answer
  • Which polynomial is a perfect square trinomial?
    5·1 answer
  • a cars wheels are 28 inches in diameter. how far in miles will the car travel if its wheels revolve 10000 times?
    7·1 answer
  • camille can ride any bus between 11 and 34 that can be divided evenly by 3,and is an even number,which numbers are the buses she
    8·2 answers
  • Is this right? if it isn't, what IS right?
    6·1 answer
  • Which is a correct first step for solving this equation?<br><br> −3x+2−5x−7=4x+2
    11·1 answer
  • Evaluate the following for f(x) = 3(2)^x<br><br>1. f (2) =<br><br>2. f (-1) =<br><br>3. f (10) =​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!