At a youth club there are 3 boys for every 4 girls if there 12 boys at the club , how many girls are there
Answers
Answer:
16
Step-by-step explanation:
i use tally marks
Answer:
16 girls.
Step-by-step explanation:
There are two ways,
The Relationship between each ratio is multiplying by 4.
Or cross multiply;
12×4=48
48÷3=16
Hope you're having a splendiferous day or evening.
Related Questions
translate this into an equation, use n for the number: "the different of 3 times a number and 6 is twice the number."
Answers
Answer:
6
Step-by-step explanation:
6 * 3 = 18
18 - 6 = 12
12 is twice of 6, the number
HELP ME ILL GIVE BRAINLIEST!! BUT YOU HAVE TO SHOW WORK
A box measures 3 1/2 ft by 2 1/4. What is the volume of the box? Show your work.
Answers
We can't find volume through given information.
Lets find the area
L=3-1/2=7/2ftB=2-1/4=9/4ft[tex]\\ \sf\longmapsto Area=LB[/tex]
[tex]\\ \sf\longmapsto Area=\dfrac{7}{2}\times \dfrac{9}{4}[/tex]
[tex]\\ \sf\longmapsto Area=\dfrac{63}{6}[/tex]
Through (2, 1) with slope of -3/2
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Graph:
Sara says, "If you subtract 12 from my number and multiply the difference by - 3, the result is
- 45." What is Sara's number?
Answers
Answer:
3
Step-by-step explanation:
Answer:
[tex]27[/tex]
Step-by-step explanation:
Let Sara's number be [tex]x[/tex]. Now, we can build an equation.
We have that [tex]-3(x-12)=-45[/tex]. Aha! Now we have a path to the solution!
We can divide both sides of the equation by [tex]-3[/tex] to get [tex]x-12=15[/tex].
Lastly, we add [tex]12[/tex] to both sides to get [tex]x=27[/tex].
So, Sara's number is [tex]\boxed{27}[/tex].
Write and inequality to compare the fractions. 24/18 and 25/15
Answers
Answer:
25/15 > 24/18
Step-by-step explanation: Both of these fractions can be reduced so that the denominator is 3. This will make it much easier to compare the two fractions. For 24/18, if you divide both the numerator and the denominator by 6, then the fraction simplifies to 4/3. For 25/15, if you divide the numerator and denominator by 5, then the fraction simplifies to 5/3. Since these fractions have a common denominator, the fraction with the larger numerator is going to be the larger fraction. So, 25/15 is greater than 24/18.
PLEASE HELP PLEAAE HURRY ANS NO LINKS PLEASE I REALLY NEED THE ANSWER
Answers
Answer:
-2
Step-by-step explanation:
Answer:
[tex]2 - 4 = - 2 \times ( - 5) = 10 \div 2 = 5 + 4 = 9 \times ( - 2) = - 18[/tex]
Need help I will give you brainless please
Answers
Answer:
B 5000
Step-by-step explanation:
0.15x + 500 = 0.10x+750
0.15x = 0.10x + 250
0.05x = 250
x = 5000
(5x + 15)
(3x – 3)
<
1
4. What is the value of x?
O 24
O 9
O 21
O 14
Answers
Answer:
x=-9
Step-by-step explanation:
How do I solve systems of equations?
y=5x-8 5y=2x+6
Answers
Answer:
y=5x-8 , 5y=2x+6
y=5x-8 , y=2x+6-5
y=5x-8 , y=2x+1
y=3x , y=3x
Step-by-step explanation:
we checkout the equation and put the common factors then solve
The sum of 12 and 30 multiplied by 6
Answers
Answer:
Step-by-step explanation:
12*30=360
360/6=60
What is the hcf of 144, 20 and 12
Answers
Grace sold 4062 ml of fruit juice in January.
She sold 1053 ml less fruit juice in January than in February.
How much fruit juice did Grace sell in February?
Leave your answer in litres and millilitres.
Answers
Answer:
she sold 5,115 ml of fruit juice and in liters is 5.115 liters
Write the equation of the line in fully simplified slope Intercept form.
Answers
Answer:
y = -0.83x - 2
Step-by-step explanation:
Slope intercept form is y = mx+b.
M is the slope: In this case the slope (rise/run) is 10/12. However, the slope is decreasing is that would make it negative.
Now we have: y = -0.83x + b
B represents the y-intercept. The y-intercept here is -2. So our final equation is:
y = -0.83x - 2
Factor the trinomial
X^2+7x+10
Answers
Answer:
(x+2)(x+5)
Step-by-step explanation:
The fastest a human has ever run is 27 miles per hour. How many miles per minute did the human run?
Answers
Answer:
0.45 miles per minute
Step by Step Explanation:
Look at the units: miles per hour is miles/hour
If we multiply
miles hour miles
----- * ------- = ---------
hour minute minute
(27 miles/hour)(1/60 hours/minute) = 27/60
= 9/20 = 0.45 miles per minute
It currently takes users a mean of 25 minutes to install the most popular computer program made by RodeTech, a software design company. After changes have been made to the program, the company executives want to know if the new mean is now different from 25 minutes so that they can change their advertising accordingly. A simple random sample of 51 new customers are asked to time how long it takes for them to install the software. The sample mean is 26.2 minutes with a variance of 16 minutes. Perform a hypothesis test at the 0.01 level of significance to see if the mean installation time has changed. What kind of problem is this
Answers
Testing the hypothesis in this problem which is a two-tailed test, we can conclude that there is not sufficient evidence to conclude that the mean time of installation has changed, since the p-value of the test is 0.0364 > 0.01,
At the null hypothesis, we test if the mean is of 25 minutes, that is:
[tex]H_0: \mu = 25[/tex]
At the alternative hypothesis, we test if the mean has changed, that is, if it is different than 25 minutes.
[tex]H_1: \mu \neq 25[/tex]
We have the standard deviation for the sample, thus, the t-distribution is used. The value of the test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which:
X is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.In this problem:
25 is tested at the null hypothesis, thus [tex]\mu = 25[/tex].Sample mean of 26.2 minutes, thus [tex]X = 26.2[/tex].Sample of 51, thus [tex]n = 51[/tex].Variance of 16, thus [tex]s = \sqrt{16} = 4[/tex].The value of the test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{26.2 - 25}{\frac{4}{\sqrt{51}}}[/tex]
[tex]t = 2.14[/tex]
The p-value of the test is found using a two-tailed test(test if the mean is different of a value), with t = 2.14 and 50 degrees of freedom.Using a t-distribution calculator, this p-value is of 0.0364.Since the p-value of the test is 0.0364 > 0.01, there is not sufficient evidence to conclude that the mean time of installation has changed.
A similar problem is given at https://brainly.com/question/23777908
A letter use to represent a number value is called
Answers
Answer:
A variable
Step-by-step explanation:
help-
i dont remember how to do this or what the answer would be
Answers
Answer:
I'm no 100% sure but,
A triangle is 360⁰
So 65 +47 =112
180-112=68
two opposite angles are always equall so
x=68⁰
Sorry if I'm wrong!
2^2 x 5^2 is the prime factorization of what number
Answers
Answer:
100 is the correct answer.
Step-by-step explanation:
=2×2×5×5
=4×25
=100
Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot. :)
Answer:
2^2 × 5^2
2× 2 × 5×5
4 × 25
100
explain how to calculate a unit rate such as 300 miles per hour 4 hour
i need help I'm kind of stuck
Answers
Answer:
75
Step-by-step explanation:
divide 4 by 300 and then you will get the answer of 75. I'm so sorry if this is wrong
How do I post pictures?
Answers
Answer:
Use the "Brainly" App
Step-by-step explanation:
Download the "Brainly" app, then log into your account, and enable your camera to have your questions searched into their system.
What is 504,622 + 715,336?
Answers
Answer:
1,219,958
Step-by-step explanation: You add 2+6=8 + 10+3=13 + 19+3=22 + 26+5=31 + 31+1=32 + 5+7=13, add them all and its equal to 1,219,958.
I have 2 cupcakes but Jake has 7/4 as many as I do
Answers
you would do your amount of cupcakes multipled by 7/4 which gets you 3.5!
Natalie uses a 15% off coupon when she buys a camera. The original price of the camera is $45.00. How much money does Natalie save by using the coupon
Answers
Answer:
6.75
Step-by-step explanation:
First, I just gave you the answer.
Second, just use it.
um....
.........
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Answers
Find (f^-1)'(7) without finding the inverse function where f(x) = 5 – 2x^3.
Answers
Step-by-step explanation:
the derivative of an inverse function is
1/f'(f^-1(x))
f'(x) = -6x²
f^-1(7) is solving the original function equation for x under the knowledge that y = 7
7 = 5 - 2x³
2 = -2x³
-1 = x³
=>
x = -1
f'(-1) = -6×(-1)² = -6×1 = -6
so,
(f^-1)'(7) = -1/6
What is the length of the line segment with endpoints (12.7, −6.5) and (−13.5, −6.5) ?
Answers
Answer:
Its 26.2
Step-by-step explanation:
I just took the test
Yw :DD
Answer:
The answer is 26.2
Step-by-step explanation:
I took this test, got it wrong, then it explained it so that I could completely understand the question.
Three cell phone towers form a triangle,
APQR. The measure of ZQ is 10° less than the measure of ZP. The measure of ZR
is 5° greater than the measure of ZQ. Which two towers are closest together?
Answers
Answer:
answer mga dalog points
Step-by-step explanation:
mga Gago mga mini o
unsa Pana dha
mga hangol og points answer na
7x + 10x + 20 = what
Answers
Answer:
the answer is 17x+20
Step-by-step explanation:
7x+10x+20
17x+20
hope it helps
mark me brainliest pls
Answer:
17x+20
Step-by-step explanation:
like terms= 7x and 10x so add= 17x
unlike term 20 it remains as it is.
so 17x+20 further cannot be simplified as both are unlike terms
: 11 = 1 /3 : 6
plz help
Answers
[tex]x:11 = \frac{1}{3} :6[/tex]
Divide the numbers[tex] \frac{x}{11} = \frac{ \frac{1}{3} }{6} \\ \frac{x}{11} = \frac{1}{18} [/tex]
Multiply all terms by the same value to eliminate fraction denominators[tex]11 \times \frac{x}{11} = 11 \times \frac{1}{18} [/tex]
Cancel multiplied terms that are in the denominator[tex]x = 11 \times \frac{1}{18} [/tex]
Multiply the numbers[tex]x = \frac{11}{18} [/tex]
Solved ✔︎