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galina1969 [7]
3 years ago
6

16.2.2 A student received grades of 82, 87, 89, 91, and 75 on math quizzes. Find the mean.

Mathematics
2 answers:
rewona [7]3 years ago
7 0

Answer:

84.8 is the mean

Step-by-step explanation:

Add the grades from the quizzes which gives you 424, then divide by 5 which then gives you your answer of 84.8

My name is Ann [436]3 years ago
7 0

Answer:

84.4

Step-by-step explanation:

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What is the perimeter of a rectangle with length x+4 and a width of 5x-7
AlladinOne [14]

Answer:

12x-6

Step-by-step explanation:

perimeter= 2l+2w

=2(x+4)+2(5x-7)

=2x+8+10x-14

=12x-6

8 0
3 years ago
PLEASE HELP WORTH 99 POINTS AND CORRECT ANSWER WILL GET BRAINLIEST
Soloha48 [4]

Hello!

I believe the answers are:

A) The vertex is (1, −6)

C) The graph has a minimum.

I hope it helps!

7 0
3 years ago
Read 2 more answers
Write a expression that is equivalent of 4+3(5+x)
Serggg [28]

Answer:19+3x

Step-by-step explanation:

4+3(5+x)

Open bracket

4+15+3x

19+3x

3 0
4 years ago
The circumference of a circle is 47.1 feet. What is the diameter of the circle? 7.5 ft 15 ft 147.9 ft 30 ft
MAVERICK [17]
Hi Zack! Thanks for asking a question here on Brainly.

█ Explanation <span>█
</span>
<span>✦ We are looking to find the diameter of the circle.
</span>✦ Do the following formula to find the diameter.
✦ 47,1/ \pi =47.1/3.14
<span>✦ = 15 ft 
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Answer: 15 ft 

<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
6 0
3 years ago
Read 2 more answers
If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?
scZoUnD [109]

Answer:

Option B m<ZA+m<ZB = 155° is correct option.

Step-by-step explanation:

We know that sum of angles of triangle is equal to 180°

And Isosceles triangle, 2 angles are same

So, let  Angle 1 = x

Angle 2 = x

Angle 3 = 130°

Finding values of angle x

x+x+130=180

2x=180-130

2x=50

x=25

So, Angle 1 = 25 °

Angle 2 = 25°

As, angle B is greater than 90°, the sum of angles added must be greater than 90°

So, Option A, C and D can't be correct, as their sum is less than 90°

Option B m<ZA+m<ZB = 155° is correct option.

Verify:

m<ZA = 25° (as found earlier)

m<ZB = 130° (given)

So, m<ZA+m<ZB = 155°

25°+130° = 155°

8 0
3 years ago
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