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3 years ago

Plzz help ill mark u brainliest

Mathematics

1 answer:

mart [117]3 years ago

8 0

Answer:

a=2 b=3 c= 180 d=180 is sns

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Can someone please help me out?

Elza [17]

Answer:

Distribute, subtract, additon,divide

Step-by-step explanation:

4(x-7)=2x-6 to get the second problem you distribute the 4 to the 7 and x

4x-28=2x-6 subtract the 2x from 4x

2x-28=-6 then u add the 28 to the negative 6

2x=22 divide

x=11

4 0

3 years ago

Read 2 more answers

Professor Liu gave the same quiz to the students in her morning class and in her afternoon class. The average (arithmetic mean)

natka813 [3]

Answer:

Afternoon class has more students.

Step-by-step explanation:

Let m be the number of students in the morning class and n be the number of students in the afternoon class.

The average score for the students in the morning class was 80, then the sum of their scores is $80m.$

The average score for the students in the afternoon class was 86, then the sum of their scores is $86n.$

The sum of the scores of both classes is

$80m+86n$

and the average score is

$\dfrac{80m+86n}{m+n}$

The average (arithmetic mean) score for the two classes combined was 84, then

$\dfrac{80m+86n}{m+n}=84\\ \\ 80m+86n=84m+84n\\ \\86n-84n=84m-80m\\ \\2n=4m\\ \\n=2m$

This means n is greater, so afternoon class has more students.

7 0

3 years ago

Mutiply the expression 2 (7n-11)

attashe74 [19]

14n-22 is the answer. Use the distributive property.

4 0

3 years ago

Alexander placed four straws on his table.

Diano4ka-milaya [45]

Answer:D (straws 2 and 4)

Step-by-step explanation:

The answer is D becuase those two straws intersect at point and create 90° angle

6 0

3 years ago

Evaluate the expression when a=-6 and c= 2 .<br> a-4c

Harman [31]

Answer:

-14

Step-by-step explanation:

a-4c=(-6)-4(2)=-6-8=-14. Hope this helps!

5 0

3 years ago

Read 2 more answers