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cricket20 [7]
3 years ago
6

John can create 3 apps in 6 weeks while Ben can do the same job in 2 weeks. How many weeks would it take them to create 10 apps

together?
Mathematics
1 answer:
BARSIC [14]3 years ago
3 0

Answer:

5 weeks.

Step-by-step explanation:

John can create 3 apps in 6 weeks, so his rate is (3 apps / 6 weeks) =  1/2 app per week.

Ben can do same job i.e. 3 apps in 2 weeks, so his rate is (3 apps / 2 weeks) = 3/2 app per week.

Their combined rate is (1/2 + 3/2) = 4/2 = 2 apps per week.

It means they together can create 2 apps in 1 week.

So, they together can create 10 apps in 5 weeks.

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The table below represents the function F. 3 7 F(x) 4 15 5 31 7 127 8 255 The equation that represents this function is?​
timurjin [86]

The table is an exponential function, and the equation that represents this function is f(x) =2^x -1

<h3>The equation of the table</h3>

The table is given as:

x   F(x)

4    15

5    31

7    127

8    255

Rewrite the table as:

x   F(x)

4    16 - 1

5    32 - 1

7    128 - 1

8    256 - 1

Express as a base of 2

x   F(x)

4    2⁴ - 1

5    2⁵- 1

7    2⁷ - 1

8    2⁸ - 1

Notice that the function is 1 subtracted from 2 raised to the power of the input.

This is represented as:

f(x) =2^x -1

Hence, the equation of the table is f(x) =2^x -1

Read more about exponential functions at

brainly.com/question/9608962

#SPJ1

4 0
2 years ago
Find the mean of the data in the dot plot below.
salantis [7]

The mean of the following dot plot:

Mean: 3

Step-by-step explanation:

0 x 1 = 0

3 x 1 = 3

6 x 1 = 6

(we only add the numbers that only has a dot on the number in the dot plot)

So:

Mean: 0 + 3 + 6 = 9/3 = 3

Read more on Brainly.com - brainly.com/question/16754217#readmore

this was my previous answer from your other question

7 0
3 years ago
Read 2 more answers
Use the vertex formula to find the vertex of the quadratic function ​f(x)=−x2+6x−10.
enyata [817]

Answer:

3,-19

Step-by-step explanation:

5 0
3 years ago
The brain volumes ​(cm cubed​) of 20 brains have a mean of 1111.2 cm cubed and a standard deviation of 125.3 cm cubed. Use the g
valentina_108 [34]

Answer:

Yes, the value 1411.8 cm³ is significantly high.

Step-by-step explanation:

Consider the provided information.

The brain volumes ​(cm cubed​) of 20 brains have a mean of 1111.2 cm cubed and a standard deviation of 125.3 cm cubed.

The range rule of thumb to identify the limits separating values that are significantly low or significantly high is:

The range rule of thumb identifying significant values are as.

Significantly low values are μ-2σ

Substitute the μ = 1111.2 and σ = 125.3 in above formula.

1111.2-2(125.3)=860.6

Significantly high values are μ+2σ

Substitute the μ = 1111.2 and σ = 125.3 in above formula.

1111.2+2(125.3)=1361.8

The value is significantly high due to the value 1411.8 cm³ is not lie between the values 860.6 cm³ and 1361.8 cm³.

Hence, Yes, the value 1411.8 cm³ is significantly high.

3 0
3 years ago
Use the intersect method to solve the equation x^2-1=-x^2+7
olga55 [171]

Answer:

The solutions of the equation x^2-1=-x^2+7 are (-2,3) and (2,3)

Step-by-step explanation:

Please, see the attached file.

Thanks.

4 0
3 years ago
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