3 years ago

This is my last question

Mathematics

2 answers:

WARRIOR [948]3 years ago

7 0

Answer:

the first one

Step-by-step explanation:

poizon [28]3 years ago

5 0

Answer:

Step-by-step explanation:

it is going to be answer 2 because he put more in at the end

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= The average score of Karl's first four math tests is 72 points. After the fifth and the sixth tests, his average score increas

mylen [45]

Answer:

83 points

Step-by-step explanation:

-The formula for average is given as:

$\bar X=\frac{1}{n}\sum{x_i}\\\\x_i=Individual \ Test \ scores\\n=number \ of \ scores$

Let a be his 5th score and (a+4) of the 6th

#We subtract the sum of the first 4 tests from the 6, to get the sum of the 5th and 6th tests:

$(6^{th}+5^{th})=\bar X n_6-\bar X n_4\\\\=75\times 6-72\times 4\\\\=162$

#We substitute for the 5th and 6th to solve a:

$5^{th}=a\\6^{th}=a+4\\\\a+(a+4)=162\\\\2a=158\\\\a=79\\\\6^{th}=a+4=79+4=83$

Hence, Karl score 83 points in his 6th test.

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4 years ago

Please help please please

Anestetic [448]

Answer:

100

Step-by-step explanation:

5x2=10x10=100

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Leno4ka [110]

55.8 is the answer

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There are five apples and you take three away. how many apples do you have?

wlad13 [49]

You have 2 apples.

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Answer: C
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