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xenn [34]
3 years ago
6

At the end of the quarter, sara knows she got a perfect score on 3 out of 7 of her history quizzes. How many total quizzes did s

he take during the quarter if she has 9 perfect scores?
Mathematics
1 answer:
Karolina [17]3 years ago
3 0

Answer:

11

Step-by-step explanation:

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Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.
Stolb23 [73]
The formula given to us relates circumference with radius but we are given diameter instead. good thing we know that diameter is twice the length of radius so if diameter=28, the radius=14. therefore, using our formula, we can find the circumference:
C = 2(pi)(14)
C = 87.96
and this answer is close to 88 so the answer is A

let me know if you have any questions!!!

8 0
3 years ago
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In this 2x3 grid, each lattice point is one unit away from its nearest neighbors. A total of 14 isosceles triangles(but not righ
pickupchik [31]

The area of a shape is the amount of space it can occupy.

<em>The number of isosceles triangle in the grid is: </em>\mathbf{\frac{2x^2}{u^2}}<em />

The dimension of the grid is given as:

\mathbf{Dimension = x\ by\ x}

Calculate the area

\mathbf{A_1 = x\ \times \ x}

\mathbf{A_1 = x^2}

The area of each isosceles triangle is given as:

\mathbf{A_2 = \frac 12u^2}

The number (n) of the triangle in an x-by-x grid is:

\mathbf{n = A_1 \div A_2}

So, we have:

\mathbf{n = x^2 \div \frac 12u^2}

Express as products

\mathbf{n = x^2 \times \frac{2}{u^2}}

\mathbf{n = \frac{2x^2}{u^2}}

Hence, the number of isosceles triangle in the grid is: \mathbf{\frac{2x^2}{u^2}}

Read more about areas at:

brainly.com/question/16418397

8 0
3 years ago
Me ayudan a resolverlo por favor (3x+8y+8)+(4x+6y-6)
Anna007 [38]

Answer:

7x + 14y + 2

Step-by-step explanation:

(3x+8y+8)+(4x+6y-6)

3x + 8y + 8 + 4x + 6y - 6

3x + 4x + 8y + 6y + 8 - 6

7x + 14y + 2

5 0
3 years ago
The family arcade center charges an entry fee of $11 plus an additional $1 per game played. Which of the following functions des
HACTEHA [7]
You probably made an error while writing the options. 
The correct ans is: 

C(x)= \frac{11+x}{x}

Entry Fee for the player is $11.
Player is charged $1 for each game played. So for x games played, the charges will be $ x.

So, total charges for x games played will be:
T(x) = 11 + x

Average Cost per game played = Total Cost/Total Games played
So,

C(x)= \frac{11+x}{x}
3 0
3 years ago
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For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b?
zalisa [80]

Answer:

The ordered pair is the point (2b,2b+7)

Step-by-step explanation:

we have

f(x)=x+7

For x=2b

Substitute the value of x in the function

so

f(2b)=2b+7

therefore

The ordered pair is the point (2b,2b+7)

6 0
3 years ago
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