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2 years ago

In the 2016 Rio Olympic games, the total of gold, silver and bronze medals won by China was 70.

Mathematics

1 answer:

Oksana_A [137]2 years ago

3 0

26 gold metals

Explanation: 70 - 18 silver = 52 metals left

52/2= 26 … so 26 + 26= 52 52 + 18=70

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If the endpoints of `bar(AB)` have the coordinates A(9, 8) and B(-1, -2), what is the midpoint of `bar(AB)`?

alina1380 [7]

To solve this problem you must apply the proccedure shown below:

1. You have the following points given in the problem above:

$A(9,8)\\ B(-1,-2)$

2. To find the midpoint, you must apply the formula that is used for calculate it. This is:

$m=(\frac{x1+x2}{2}, \frac{y1+y2}{2} )$

Where:

$x1=9\\ x2=-1\\ y1=8\\ y2=-2$

3. Now, you must substitute these values into the formula for calculate the midpoint, as following:

$m=(\frac{9+(-1)}{2} ,\frac{8+(-2)}{2} )\\ m=(4,3)$

Therefore, the answer is: $m=(4,3)$

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3 years ago

Leroy is 22 years old. His car averages 31 miles

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Answer:

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Step-by-step explanation:

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3 years ago

If Jenny’s salary is $350 per week and she works 40 hours, what does she earn per hour?

diamong [38]

Answer:

$8.75 an hour

Step-by-step explanation:

Just do 350 / 40 and you get 8.75

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3 years ago

Read 2 more answers

Divide 18 in two parts so that sum of their reciprocals is 2/5

inn [45]

Answer:

3.6

Step-by-step explanation:

I think that is the answer but im not 100 percent sure

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2 years ago

What is the measure of ZA?<br> What is the measure of ZB?

slamgirl [31]

Answer:

$m\angle A = 72\degree \\m\angle B = 108\degree$

Step-by-step explanation:

ABCD is a parallelogram.

Since, opposite angles of a parallelogram are congruent.

$\therefore m\angle A = m\angle C\\\therefore (5y-3)\degree = (3y+27)\degree \\\therefore 5y - 3= 3y +27\\\therefore 5y-3y = 27+3\\\therefore 2y = 30\\\\\therefore y = \frac{30}{2} \\\\\therefore y = 15\\\because m\angle A = (5y-3)\degree \\\therefore m\angle A = (5\times 15-3)\degree \\\therefore m\angle A = (75-3)\degree \\\huge{\red {\boxed {\therefore m\angle A = 72\degree}}} \\\\\because m\angle A + m\angle B = 180\degree(opposite \: \angle 's\: of\:a\: \parallel ^{gm}) \\\therefore m\angle B = 180\degree - 72\degree \\\huge{\purple {\boxed {\therefore m\angle B = 108\degree}}}$

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3 years ago