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Bogdan [553]
4 years ago
8

A student has gotten the following grades on his tests. What is the minimum grade he must get on the last test in order to have

an average of 82​? 85​, 90​, 79​, 72
Mathematics
2 answers:
Stolb23 [73]4 years ago
7 0

Answer:

84

Step-by-step explanation:

Because average is basically the mean, so i used a mean calculator and put in the four grades (numbers) and got an average of 81.5, so then i kept putting an additional other number in and wasn't getting 82, until i put in 84 and all of those numbers together gave me an average of 82.

valentina_108 [34]4 years ago
3 0

Answer:

84

Step-by-step explanation:

The average is found by adding all the scores together and dividing by the number of scores

Let the unknown score be x

(85+90+79+72+x) /5 = 82

Multiply each side by 5

(85+90+79+72+x) /5*5 = 82*5

(85+90+79+72+x)  = 410

Combine like terms

326+x = 410

Subtract 326 from each side

326+x-326 = 410 -326

x =84

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a right triangle has a leg length of 14 yards and a hypotenuse of length 43 yards. Find the length of the other leg. Provide an
Makovka662 [10]

By applying the Pythagorean theorem, we will find that the length of the other leg of the right triangle is 40.7 yards.

If for right triangle we define A and B as the length of the two legs, and H as the length of the hypotenuse, the Pythagorean theorem says that:

A^2 + B^2 = H^2

Here we know that:

A = 14 yd

H = 43 yd

And we want to find the other leg, then we can replace that in the equation to get:

(14yd)^2 + B^2 = (43yd)^2

B = √( (43yd)^2 - (14yd)^2) = 40.7 yd

So the other leg length is 40.7 yards.

If you want to learn more about right triangles, you can read:

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8 0
3 years ago
Complete the table of ordered pairs for the linear equation
Alekssandra [29.7K]

Answer:

Step-by-step explanation:

See attachment.

6 0
3 years ago
4. Reid is building a fence around a square portion of his
tiny-mole [99]

The point that best represents the length of one side of the fence of the square portion of the garden area is: B. Point B.

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Area of a square = s², where s is the side length of the square.

Area of the square portion of his yard = 200 square feet

Side length of one side of the fence = √200 = 14.1 feet.

From the number line given, point B best represents 14.1 feet. Therefore, the side length is best represented by: B. Point B.

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6 0
2 years ago
What is 16% of 43 minutes
snow_tiger [21]
The correct answer would be 6 minutes and 52 seconds.
3 0
3 years ago
I need help in this please! thank you so much!
Anna35 [415]

Answer:

C) p(x) has a zero between x=2 and x=4

Step-by-step explanation:

For a polynomial p(x), p(a)=R means that, when p(x) is divided by x-a, the remainder is R.

This is called the remainder theorem

Therefore p(2)=1, p(4)=-1 means that when p(x) is divided x-2 and x-4 is 1 and -1 respectively.

Also the Intermediate value theorem says that, if p(a) and p(b) have opposite signs then there is a certain c on (a,b) where f(c)=0 i.e there is a zero between a and b

Therefore the correct answer is C

5 0
3 years ago
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