A school has 320 girls and 250 boys.
The probability that a girl is left-handed is 0.2
The probability that a boy is left-handed is 0.1
Estimate the number of left-handed students in the school.​

Answers

Answer 1
320 girls x 0.2 lh probability = 64 lhg
250 boys x 0.1 lh probability = 25 lhb
Total is the sum of the two 64+25 = 89

Related Questions

I tried this problem out but I’m not sure if I’m right also this is a test worth 100 points can someone show me if u made any mistake can j explain also ?

Answers

Answer:

Median without outlier should be 40

For the bottom questions, it should go:

Decreases the mean, does not change the median, does not change the mode

It's decreasing the mean because it goes from 44.7 to 39

Median w/ and without outlier is both 40

Mode also stays the same w/ or without the outlier, which is 96

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Answers

Answer:

the answer would be A because that makes a straight line.

a. The ratio of pages read by Liam to
pages read by Amir is 1:5. If Liam read
12 pages, how many pages did Amir
read? Explain your reasoning.
ANSWER QUiCK PLZZ NO WEBSITE

Answers

Step-by-step explanation:

For every page that Liam reads, Amir reads five, so if Liam read 12 pages, then Amir read 12 * 5 = 60 pages

A large candy bar was 102 calories. The smaller candy bar has 18 percent less
calories. How many calories does the smaller candy bar have?

Answers

Answer:

89 I think

Step-by-step explanation:

my bad if I'm wrong I bearly woke up

would n-3/n+3 cancel out?

Answers

Answer:

Let's work this out.

n - 3 / n + 3

n / n + 6

In order to avoid it cancelling out, we only cancelled out one side.

2n = 6

n = 3

They wouldn’t cancel out you can cancel out the n so there for n= 3

Which of the following points has coordinates that are 5 horizontal units from point A?

A. left parenthesis 3 comma 2 right parenthesis
B. left parenthesis 3 comma 7 right parenthesis
C. left parenthesis negative 2 comma 7 right parenthesis
D. left parenthesis 5 comma 2 right parenthesis

Answers

Answer:

A. left parenthesis 3 comma 2 right parenthesis

Step-by-step explanation:

It's correct 100%

What is the y-intercept of the graph of y = 2.5*?

Answers

I’m so sorry if I get this wrong but if the equation is y=2.5, than the y intercept is just 0 because it would be mentioned in the equation. For example, if the equation was y=2.5+5, then the answer would be 5


So once again the answer I believe is 0

Find the midpoint of points A(9, -2) and B(-1,8) graphically.​

Answers

Answer:

the midpoint is (4,3)

Step-by-step explanation:

If the compound interest paid for rupees 4000 is rupees 420 then find the

amount paid at the end of the time period​

Answers

Answer:

[tex]Amount = Rs4420[/tex]

Step-by-step explanation:

Given

[tex]Principal = Rs4000[/tex]

[tex]Interest = Rs420[/tex]

Required

Determine the amount paid

This is calculated as:

[tex]Amount = Principal + Interest[/tex]

[tex]Amount = Rs4000 + Rs420[/tex]

[tex]Amount = Rs4420[/tex]

9
1 point
Karla needs a box to pack her fish tank shown below. How many square feet of cardboard does she need to buy?
5
4 ft
6
2ft
6 ft
7
56 ft2
48 ft2
8
Ο Ο Ο Ο.
32 ft2
88 ft
Next
10
Previous

Answers

Answer:

give the full questions

What is the y-intercept of the line?

A: -2
B: 0
C: 1
D: 1/2

Answers

Answer:

C: 1

this answer is c because the line is one the Y intercept of 1

plss help i’ll give brainliest thank you!

Answers

Answer:

D

Step-by-step explanation:

As,

-10 is always greater than -13

Hence, -13 < -10

the last one. with negatives, the lowest is always a larger number because it’s closest to zero.

A car travels 30 km in 5.5 hours and 400 km in 5.5 hours find the average speed of the car during the entire journey

Answers

Answer:

This is your answer

Answer:  39.09 km per hour average

Step-by-step explanation:

add total distance and divide by total time

(30+400)/(5.5+5.5)

430/11=39.0909

Daniel and Audrey are reading the same book. At the beginning of the month, Daniel was on page 49 and Audrey was on page 22. Daniel will read 17 pages per day and Audrey will read 20 pages per day. Let
D
D represent the page of the book that Daniel is on at the end of
t
t days into the month, and let
A
A represent the page of the book that Audrey is on at the end of
t
t days into the month. Write an equation for each situation, in terms of
t
,
t, and determine what page Daniel and Audrey will be on on the day they are both on the same page.


Can you plz help me because it says that it’s wrong?

Answers

Answer:

202

Step-by-step explanation:

So it has to end in 2 because 20t+22 will always be a 2.

day1:

17x1+49=66

no 2

day2:

17x2+49=83

odd

day3:

D=100

no 2

day4:

odd

day5:

D=134

no 2

etc

keep adding 17 to D until you get one that ends in 2

D=202

A=202

The line segment between (9,6) and (-2,-1) is bisected at (3.5,2.5). Find the y-intercept of the perpendicular bisector.

Ans: y-intercept = (0, _____)

Answers

Answer:

Y-intercept is (0,8)

Step-by-step explanation:

Firstly, we need to get the equation of the line segment

We have the general equation as;

y = mx + b

m is the slope and b is the y-intercept

So for the slope between (9,6) and (-2,-1); we have

m = (y2-y1)/(x2-x1)

m = (-1-6)/(-2-9) = -7/-11 = 7/11

Mathematically, when two lines are perpendicular, their slopes have a product of -1

Let the slope of the second line be m

m * 7/11 = -1

7m = -11

m = -11/7

The equation of the second line is;

y = mx + b

y = -11x/7 + b

The line passes through the point (3.5,2.5)

So,

2.5 = -11/7(3.5) + b

2.5 = -5.5 + b

b = 2.5 + 5.5

b = 8

so the y-intercept of the perpendicular bisector is 8

The daily cost of hiring a plumber, y, to work x hours on a repair project can be modeled
using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of
$45 per hour. The plumber works a maximum of 8 hours per day.
For one day of work, what is the range of the function for this situation?
A0 B 80 C 0 D 45 < < 685

Answers

Answer:

i have the same question

Step-by-step explanation:

i have the same question

4x4+4x3-9x2-x+2 = x-1

Answers

Answer:

x= 13/2

Step-by-step explanation:

multiply   4x4+4x3-9x2-x+2=x-1

calculate   16+12-18-x+2=x-1

move the terms   12-x=x-1

collect like terms calculate   -x-x=-1-12

divide both sides   -2x=-13

solution   x=13/2

Find the diameter of a circle with the given dimensions. 1. d = 6 cm

Answers

But the diamerter equals d, so 6.

Answer:

its 6

Step-by-step explanation:

because your finding the diameter.

A line has an unlimited amount of points on it. Why do you think this is true?

Answers

Answer:

bc  if it has no points  it will go on infinitely

Step-by-step explanation:

Line has at least two point, but it can have unlimited amount of point. Even a short line can have unlimited amount of points.

Find the value of x. Round to the nearest tenth. Assume that segments appearing to be tangents are tangent to the circle.

Answers

Answer:

x=8.4

Step-by-step explanation:

[tex](2x)^{2} +12.6^{2} =21^{2} \\\\4x^{2} +158.76=441\\\\4x^{2}441-158.76\\\\4x^{2} =282.24\\\\x^{2} =70.56\\\\x=8.4[/tex]

hope it helps....

have a great day :)

Which number line represents the solutions to 1-2x1 = 4?
+
4
-10-8-6-4-20
2
6
8
10
f
+ +
-10 -8 -6 -4 -2 0
+
6
+
8
2
4
10
+
O Att
-10-8-6-4-20
+
6
2
4
8
10
+
-10 -8 -6 -4 -2
+
2
+
4
O
6
8.
10

Answers

Answer:

The third number line where x = -2, 2

Step-by-step explanation:

The solution is, the number line represents the solutions is given below.

here, we have,

given equation is,

25x + 200 > 1,200

Subtract 200 from each side

25x + 200-200 > 1,200-200

25x> 1000

Divide by 25

25x/25 >1000/25

x>40

To learn more on number line click:

brainly.com/question/29162579

#SPJ7

PLEASE HELP ME ITS MY LAST QUESTION!!

Write three very large numbers and three very small numbers. Now write them using scientific notation. Then
perform one calculation with the numbers.

Answers

100 = 10^2

1000 = 10^3

10000 = 10^4

0.1 = 10^(-1)

0.01 = 10^(-2)

0.001 = 10^(-3)

Now,

100 × 0.1 = 10^2 × 10^(-1)

= 10

I will mark you brainiest if you can answer this

Answers

Answer:

9 buses

12 cars

(Step-by-step explanation:

x=bus x+y=21 --> y=-x+21

30x+4y=318 --> y= -30x/4 + 318/4

y=car

x= 9

y=12

:) hope this help

(13x + 12x) divided by 4 = 10

What is x

Answers

Answer: x is 8/5

Step-by-step explanation:

Answer:

x = [tex]\frac{8}{5}[/tex]

Step-by-step explanation:

Given

[tex]\frac{13x+12x}{4}[/tex] = 10 ( multiply both sides by 4 to clear the fraction )

25x = 40 ( divide both sides by 25 )

x = [tex]\frac{40}{25}[/tex] = [tex]\frac{8}{5}[/tex]

3x + 2y = -2
2x - 2y = -18

Answers

Answer:

What’s your Question?

Step-by-step explanation:

If I have the coordinats (4, 3) and (2, 2) what is distance do we get

Answers

Answer:

※※※※※※※※※※※※※※※※※

Hi! The answer to your question is [tex]\sqrt{5}[/tex]

Step-by-step explanation:

Use the Distance Formula to determine the distance between two points.

- Brooklynn Deka

❣❣

Can someone help me with these two charts please

Answers

The answer to this question is you need to use the BOFA Method hope this helped

For a polygon with 10 sides, which equation below represents the sum of the interior angles in the polygon?

Answers

Answer:

I mean I don't know your options, but the answer is probably something like y=180x

Step-by-step explanation:

Answer:

1440

Step-by-step explanation:

Sum= (180)(8)=1440

Better:

Sum= (x-2)(180)

x represents the number of sides

So it would be

sum=(10-2)(180)

The answer then would be 1440

It is given that yvaries directly as x. If y= 5 when x= 4 determine the constant of variation,

Answers

Answer:

[tex]k=\dfrac{5}{4}[/tex]

Step-by-step explanation:

Given that,

y varies directly as x. It means,

y = kx

Where

k is the constant of variation

or

[tex]k=\dfrac{y}{x}\\\\k=\dfrac{5}{4}[/tex]

So, the constant of variation is [tex]\dfrac{5}{4}[/tex].

Help brainliest question!!!

Answers

Answer:

The second option

Step-by-step explanation:

Since root 16 is an integer (4), the second option produces the fraction 4/5 which is rational.

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