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3 years ago

1. The ratio of girls to boys to parents at the concert is 10:5:4. If there are

Mathematics

1 answer:

Maru [420]3 years ago

8 0

Answer:

1. 228 parents

Step-by-step explanation:

I will do number 1 for you. I'll let you or someone else do the others.

Let 10x = no. of girls

5x = no. of boys

4x = no. of parents

Now, 10x + 5x + 4x = 1083

19x = 1083

x = 57

(10)(57) = 570 girls

(5)(57) = 285 boys

(4)(57) = 228 parents

1083 total

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the area of a rectangular picture frame is 30 3/1 square inches. The length of the frame is 6 1/2 inches. Find the width of the

Rudiy27

I hope this helps you

Area=length ×width

30 1/3=30.3+1/3=91/3

6 1/2=6.2+1/2=13/2

91/3=13/2.width

width =7.13.2/3.13

width =14/3

width = 4 2/3

3 0

3 years ago

I go bowling every week and keep track of how many strikes i get: 2,0,4,7,7,0,1,0 Find the mode median and mean of this set of d

natima [27]

Answer:

Mode is 0
Median is 1
Mean is 2.625

Step-by-step explanation:

To find the mode, or modal value, it is best to put the numbers in order. A number that appears most often is the mode.
0, 0, 0, 1, 2, 4, 7, 7 = mode is 0

To find the Median, place the numbers in value order and find the middle number.
0 , 0 , 0 , 1 , 2 , 4 , 7 , 7 = median is 1

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
0 + 0 + 0 + 1 + 2 + 4 + 7 + 7 / 8 = mean is 2.625

5 0

3 years ago

Hi, teacher I was absent these days and I didn’t understand anything about this lesson and I need help this is not count as a te

motikmotik

Given:

There are given that the cos function:

$cos210^{\circ}=-\frac{\sqrt{3}}{2}$

Explanation:

To find the value, first, we need to use the half-angle formula:

So,

From the half-angle formula:

$cos(\frac{\theta}{2})=\pm\sqrt{\frac{1+cos\theta}{2}}$

Then,

Since 105 degrees is the 2nd quadrant so cosine is negative

Then,

By the formula:

$\begin{gathered} cos(105^{\circ})=cos(\frac{210^{\circ}}{2}) \\ =-\sqrt{\frac{1+cos(210)}{2}} \end{gathered}$

Then,

Put the value of cos210 degrees into the above function:

So,

$\begin{gathered} cos(105^{\circ})=-\sqrt{\frac{1+cos(210)}{2}} \\ cos(105^{\operatorname{\circ}})=-\sqrt{\frac{1-\frac{\sqrt{3}}{2}}{2}} \\ cos(105^{\circ})=-\sqrt{\frac{2-\sqrt{3}}{4}} \\ cos(105^{\circ})=-\frac{\sqrt{2-\sqrt{3}}}{2} \end{gathered}$

Final answer:

Hence, the value of the cos(105) is shown below:

$cos(105^{\operatorname{\circ}})=-\frac{\sqrt{2-\sqrt{3}}}{2}$

4 0

1 year ago

What is -35,840-(-14,764)

earnstyle [38]

21076 is the answer

it's like saying -35840 + 14764

3 0

3 years ago

Select the correct answer. Which function has a domain of all real numbers? A.y=(x+2)^ 1/4 B.y=-x^ 1/2+5 C.y=-2(3x)^1/6 D.y=(2x)

BaLLatris [955]

Answer:

The answer is probably A

Step-by-step explanation:

Its domain is the only one of these that contain -2, which is a real number.

EMERGENCY CORRECTION: THIS IS WRONG AND I'M TOO ST*PID TO FIGURE OUT THE REAL ANSWER I'M SORRY

7 0

3 years ago