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3 years ago

Explain the error in the students work.

Mathematics

1 answer:

Usimov [2.4K]3 years ago

8 0

They didn't distribute the 3 before doing the addition in the second step. They should've added 15 to both sides because 3*5 = 15

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Point E is located at (−2,4) and point F is located at (5,10) . What are the coordinates of the point that partitions the direct

lina2011 [118]

Solution:

Coordinates of Point E and F are (-2,4) and (5,10).

Suppose the Point M(x,y), divides the Line Segment Joining E (-2,4) and F (5,10) in the 7:3 ratio.

So, EM: MF= 7:3

Formula for internal Division

$x=\frac{mx_{2}+nx_{1}}{m+n}, y=\frac{my_{2}+ny_{1}}{m+n}$

$x=\frac{3 \times (-2) +7 \times 5}{3 +7},\\\\ x=\frac{-6 +35}{10}\\\\x=\frac{29}{10}\\\\ y =\frac{3 \times 4 +7 \times 10}{3+7}\\\\ y=\frac{12+70}{10}\\\\ y=\frac{82}{10}$

So,we get

x= 2.9

and , y= 8.2

6 0

4 years ago

Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

zepelin [54]

There are two prime numbers shown: They are 2 and 3

The value 1 is not prime.

We have two values we want out of four total, so 2/4 = 1/2 = 0.50 = 50%

<h3>Answer: A) 50%</h3>

7 0

3 years ago

Read 2 more answers

A bag og of grass seed weigh 5.8 pounds. how many<br> pounds would 2.5 weighs?

Softa [21]

Answer:

the answer is 8.3 it weigh

8 0

2 years ago

Sammie competes in 14 chess matches. Of those matches, she wins 8. What percent of the matches did Sammie win?

weeeeeb [17]

Answer:

57.1428%

Step-by-step explanation:

8 divided by 14 = 0.57142857142 then turn it to a fraction which you move the period two times to the right thus the answer is

57.1428....

5 0

3 years ago

AB and DE are chords that intersect at point F inside circle C as shown. If the measure of arc EA= 50 degrees and the measure of

defon

Answer:

Part 1) $m\angle AFE=55^o$

Part 2) $m\angle EFB=125^o$

Step-by-step explanation:

Part 1) what is the measure of angle AFE

we know that

The measure of the interior angle is the semisum of the arches that comprise it and its opposite.

<u>Note:</u> In this problem the correct measure of arc EA is 40 degrees (see the picture)

$m\angle AFE=\frac{1}{2}(arc\ EA+arc\ DB)$

substitute the given values

$m\angle AFE=\frac{1}{2}(40^o+70^o)=55^o$

Part 2) what is the measure of angle EFB?

we know that

$m\angle AFE+m\angle EFB=180^o$ ---> by supplementary angles (form a linear pair)

substitute the given value

$55^o+m\angle EFB=180^o$

$m\angle EFB=180^o-55^o=125^o$

8 0

4 years ago