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
Leto [7]
3 years ago
8

$24 saved after 3 weeks; $52 saved after 7 weeks. are these ratios equivalent

Mathematics
2 answers:
tankabanditka [31]3 years ago
8 0
Add 24+24=48 then 24/3= 8 add 48+8 = 56
SIZIF [17.4K]3 years ago
4 0
To figure out this question, I first divided 24 into 3, which gives me an answer of 8. then I divided 52 into 7 , which also is 8 . because the two numbers are the same, I know the ratios are equivalent.
You might be interested in
The "cold start ignition time" of an automobile engine is being investigated by a gasoline manufacturer. The following times, in
Nezavi [6.7K]

Answer:

<em>1. Sample Mean = 2.50 </em>

<em>2. Sample Variance = 1.35</em>

<em>3. Standard Deviation = 1.16</em>

Step-by-step explanation:

Note: As this question is not complete, similar can be found on internet where following are asked to calculate and here I will calculate these as well.

1. Sample Mean.

2. Sample Variance.

3. Sample Standard Deviation.

So, for sample mean to calculate from the given data points. We need to apply to following formula to calculate sample mean.

Sample Mean = (X1 + X2 + .... + XN) divided by Total number of data points.

Sample Mean = (0.17 + 1.94 + 2.62 + 2.35 + 3.05 + 3.15 + 2.53 + 4.81 + 1.92) divided by (9).

<em>Sample Mean = 2.50</em>

Likewise, from the answer of sample mean we can calculate sample variance by following steps.

<u><em>Solution: </em></u>

1.      Subtract the obtained mean from each of the data point given.

       (0.17 - 2.50) = -2.33

       (1.94 - 2.50) = -0.56

       (2.62 - 2.50) = 0.12

       (2.35 - 2.50) = -0.15

       (3.05 - 2.50) = 0.55

       (3.15 - 2.50) = 0.65

       (2.53 - 2.50) = 0.03

       (4.81 - 2.50) =  2.31

       (1.92 - 2.50) = -0.58

2.      Square each of the differences obtained in step 1.

            -2.33^{2} = 5.43

            -0.56^{2} = 0.31

               0.12^{2} = 0.01

            -0.15^{2} = 0.02

              0.55^{2}  = 0.30

              0.65^{2}  = 0.42

              0.03^{2} = 0.01

              2.31^{2} = 5.34    

           -0.58^{2} = 0.34    

3.  Sum all of these squares.

(5.43 + 0.31 + 0.01 + 0.02 + 0.30 + 0.42 + 0.01 + 5.34 + 0.34) = 12.18

4. Divide 12.18 by (n-1), where n = 9.

<em>Sample Variance =  12.18/9 = 1.35</em>

Now, by using sample variance, we can calculate standard deviation with easy simple steps.

So, in order to find standard deviation, we just need to take the square root of sample variance that we have already calculated above.

<em>Standard Deviation = </em>\sqrt{1.35}<em> = 1.16 </em>

<em>Good Luck!</em>

6 0
3 years ago
Find the zeros of polynomial function.<br> f(x)=x^2-x-90
Fofino [41]

First step is to factor. With a polynomial function in the form ax² + bx + c = f(x), we have to find what factors of term C have a sum of term B.

So with this, we need factors of -90 add up to become -1. Your factors are - 10 and 9.

f(x) = x² + 9x - 10x - 90

Now we group together and pull out GCFs.

f(x) = (x² + 9x) + (10x - 90)

f(x) = x(x² + 9) - 10(x + 9)

f(x) = (x - 10)(x + 9)

Now, set each factor equal to zero.

x - 10 = 0, x + 9 = 0

For the first equation you are going to add 10 to both sides to get x by itself. Subtract 9 from both sides in the second equation for the same reason.

x = 10, x = -9

Your zeros are at x = -9, 10 or at the ordered pairs (-9, 0) and (10, 0).

7 0
3 years ago
What is the cube root of -256<br> please show steps and keep answer in radical form and not decimals
polet [3.4K]

Answer:

-4∛4

Step-by-step explanation:

Simplify the radical expression

-∛256→ -2²x∛2²

then evaluate the power

-4∛4

It would be greatly appreciated if you gave me brainiest

7 0
3 years ago
Read 2 more answers
. The sum of -8 and a number is at least 9 what is the equation look like​
MA_775_DIABLO [31]

Answer:

-8 + x ≥ 9

Step-by-step explanation:

Let's look at your sentence:

The <u>sum of -8 and a number</u> is <u>at least 9 </u>what is the equation look like​

Sum is the result of adding

At least 9 means that the number is 9 or greater.

So what you have here is an inequality expression:

Sum of -8 and a number

-8 + x

x here is the "number" since we do not know the value we will use "x" to represent that number.

At least 9

At least means that it is equal or greater, so we use this expression ≥

and so we use put that all together

-8 + x ≥ 9

6 0
3 years ago
water flows into a tank 200m by 150m through a rectangular pipe 1.5m by 1.25m at 20kmph. in what time (in minutes) will the wate
DanielleElmas [232]

Answer:

Volume required in the tank (200 × 150 × 2)m3. therefore, required time= (6000/625)= 96 min.

3 0
3 years ago
Other questions:
  • Sally has 6 flowers three of the flower are yellow the rest are red how many are yellow
    9·2 answers
  • X = –6 3x − 2y = –6 solve using substetution <br> NEED FAST
    12·1 answer
  • What is 345.6 in expanded form
    8·2 answers
  • Please help me with this question!
    15·1 answer
  • joes family has compleated 60% of a road trip. if they have traveld 30 miles, how far is the full road trip?
    9·1 answer
  • Find x, assume that any segment that appears to be tangent is tangent.​
    6·1 answer
  • Answer this math problem please
    10·1 answer
  • A=?<br> B=?<br> ({[correct answer marked BRAINLIEST]})
    9·2 answers
  • Given: 9yº Simplify the expression for y= 3. (show your work and explain your reasoning.)
    8·1 answer
  • 20 points.<br><br>Solve for a.​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!