Some paint is made by mixing 2 cans of white paint for every 5 cans of red

Four batsmen on a cricket team had a mean of 42.5 runs the other 7 batsmen had a mea of 18 what was the mean number of scored by

Ira Lisetskai [31]

Answer:

The mean score of the entire team is 26.909.

Step-by-step explanation:

Given that four batsmen had a mean of 42.5.

Let $\textbf{B}_{\textbf{i}$ , where $i = 1, 2, 3, \hdots, 11$ denote the batsmen.

From the first statement, we have:

$\frac{B_1 + B_2 + B_3 + B_4}{4} = 42.5$

$\implies B_1 + B_2 + B_3 + B_4 = 42.5 \times 4 = \textbf{170}$

Therefore, the sum of the scores of the first four batsmen is 170.

Now, from the second statement we have:

$\frac{B_5 + B_6 + B_7 + B_8 + B_9 + B_{10} + B_{11}}{7} = 18$

$\implies B_5 + B_6 + B_7 + B_8 + B_9 + B_{10} + B_{11} = 18 \times 7 = \textbf{126}$

That is, the sum of the scores of the remaining 7 batsmen is 126.

Now, to calculate the average(mean) of the entire team, we add the individual scores and divide it by 11.

$\implies \frac{B_1 + B_2 + B_3 + B_4 + B_5 + B_6 + B_7 + B_8 + B_9 + B_{10} + B_{11}}{11} = \frac{170 + 126}{11}$

$= \frac{296}{11}$

$= \textbf{26.90}$ which is the required answer.

8 0

3 years ago

If the percent transmittance for a sample is 50 at 350 nm what is the value of a

LenaWriter [7]

Answer: The value of absorbance is 0.3010

Step-by-step explanation:

Transmittance,(T)= 50%

Absorbance, (A)= ?

$A=-\log(\frac{T\%}{100})$

Transmittance and absorbance are inversely related:

$A=-\log\frac{50}{100}=0.3010$

Hence,the value of absorbance is 0.3010 when transmittance was 50%.

6 0

4 years ago

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Solve the inequality and graph the solution set?

Leto [7]

Answer:

0 < x < 8

Step-by-step explanation:

| x-4| < 4

There are two solutions one positive and one negative. Remember to flip the inequality on the negative solution

x-4 <4 and x-4 > -4

Add 4 to each side

x -4+4 <4+4 and x-4+4 > -4+4

x < 8 and x > 0

0 < x < 8

open circles at 0 and 8 and a line connecting them

6 0

3 years ago

I know it's not a lot of points but yeah :(

tatuchka [14]

Answer:

2) A, 3) Shawn is looking for a good book, he reads 12 books and then decides to read 1/4 of the amount he already read. How many books has Shawn read in total? 4) A, C, E. 5) 4

Step-by-step explanation:

2) Elena already walked 12 miles, she then walks another 1/4 of those 12 miles. The answer is A.

3) Shawn is looking for a good book, he reads 12 books and then decides to read 1/4 of the amount he already read. How many books has Shawn read in total?

4) to find the answers figure out how much they multiply one number by and multiply the other number by that amount. For example, the ratio 2:5 can be the same as 4:10 because you are multiplying the original ratio by 2 to get the new ratio.

5) The diameter of a circle is the length of one side to another. to find the length of the outer edge you need to find the circumference. To find the circumference of a circle you must use $\pi$ *Diameter. To find the answer we must use 180/ $\pi$ D. Since pi can not be defined we will use 3.14 as a rough estimation. 3.14*12=37.68. 180/37.68=4.777070064. Since it doesn't make much sense to do .8 of a invitation then we must round down. The answer is 4.

3 0

3 years ago

How would I write an algebraic equation for the following question--How much would you save if you bought a laptop for $599 and

Anestetic [448]

X=tx0.85. T being the $599 and x being the totak. 0.85 is the discount

4 0

3 years ago

Read 2 more answers