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2 years ago

Please help me with this question.

Mathematics

2 answers:

olga nikolaevna [1]2 years ago

7 0

Answer:

3/8 or 37.5% chance

Step-by-step explanation:

There are 8 possibilities on the spinner, 3 of them are A.

So, there is a 3/8 chance that the spinner will land on A.

hope this helps!

777dan777 [17]2 years ago

5 0

There are 8 options in which it could land on and there are 3 A’s meaning the equation is 3/8 making the probability 37%

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A survey was taken of children between the ages of 10 and 17 about how many siblings they have and whether they have a pet. The

Karo-lina-s [1.5K]

Let's fill the table:

1. 34+18=52;

2. 97-57=40;

3. 34+57+x+6=125,

x=125-97,

x=28;

4. 28+15=43;

5. 6+2=8;

6. 18+40+15+2=75.

Then the table is:

$\begin{array}{cccccc} & \text{0 Siblings} & \text{1 Siblings} & \text{2 Siblings} & \text{3 or more Siblings} & \text{Total} \\ \text{Has a pet} & 34 & 57 & 28 & 6 & 125 \\ \text{Does not have a pet} & 18 & 40 & 15 & 2 & 75 \\ \text{Total} & 52 & 97 & 43 & 8 & 200 \end{array}$

Let's see the options:

A. Out of the 125 children who do not have a pet, 18 of them have 2 siblings.

This option is false, because 125 children have a pet, not as in statement.

B. Out of the 97 children who have 1 pet, 40 of them do not have any siblings.

This option is false, because 97 children have 1 Sibling, not 1 pet.

C. Out of the 125 children who do not have any siblings, 34 of them have a pet.

This option is false, because 125 children have a pet, not do not have siblings.

D. Out of the 97 children who have 1 sibling, 40 of them do not have a pet.

This option is true, you can see from the table that among 97 children that have 1 Sibling, exactly 40 do not have a pet.

Answer: correct choice is D.

3 0

3 years ago

Read 2 more answers

Line parallel to y-1=4(x+3) and passes through (4,32)

Lady_Fox [76]

Answer:

y - 32 = 4(x - 4)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y - 1 = 4(x + 3) ← is in point- slope form

with slope m = 4

Parallel lines have equal slopes.

Using m = 4 and (a, b) = (4, 32), then

y - 32 = 4(x - 4) ← equation of parallel line

6 0

3 years ago

Mrs.Kim wants to share the stickers equally with each of her students. there are 32 students in here class

expeople1 [14]

Answer:

Ok... what's the question

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

You have one type of nut that sells for $2.80/lb and another type of nut that sells for $9.60/lb. You would like to have 20.4 lb

max2010maxim [7]

Answer:11.396Ibs of nuts that cost $9.60/Ib and 9.014Ibs that cost $2.80/Ib

Step-by-step explanation:

First we find the cost of the supposed mixture we are to get by selling it $6.60/Ib which weighs 20.41Ibs

Which is 6.6 x 20.41 = $134.64

Now we label the amount of mixture we want to get with x and y

x = amount of nuts that cost $2.8/Ib

y = amount of nuts that cost $9.6/Ib

Now we know the amount of mixture needed is 20.41Ibs

So x + y = 20.41Ibs

And then since the price of the mixture to be gotten overall is $134.64

We develop an equation with x and y for that same amount

We know the first type of nut is $2.8/Ib

So for x amount we have 2.8x

For the second type of nut that is $9.6/Ib

For y amount we have 9.6y

So adding these to equate to $134.64

2.8x + 9.6y = 134.64

So we have two simultaneous equations

x + y = 20.41 (1)

2.8x + 9.6y = 57.148 (2)

We can solve either using elimination or factorization method

I'm using elimination method

Multiplying the first equation by 2.8 so that the coefficient of x for both equations will be the same

2.8x + 2.8y = 57.148

2.8x + 9.6y = 134.64

Subtracting both equations

-6.8y = -77.492

Dividing both sides by -6.8

y = -77.492/-6.8 =11.396

y = 11.396Ibs which is the amount of nuts that cost $9.6/Ib

Putting y = 11.396 in (1)

x + y = 20.41 (1)

x +11.396 = 20.41

Subtract 11.396 from both sides

x +11.396-11.396 = 20.41-11.396

x = 9.014Ibs which is the amount of nuts that cost $2.8/Ibs

8 0

3 years ago

If y varies inversely as x and y is 2.5 when x is 6, what is y when x is 4? a. 3.75 b. 1.67 c. 0.1 d. 7.5 Please select the best

REY [17]

Because y varies inversely as x, therefore
$y= \frac{k}{x}$
where k = constant.

When x = 6, y = 2.5. Ther efore
$\frac{k}{6} = 2.5$
Cross multiply.
k = 6 x 2.5 = 15

The equation is
$y = \frac{15}{x}$

When x = 4, obtain
$y = \frac{15}{4}= 3.75$

Answer: a. 3.75

8 0

3 years ago

Read 2 more answers

Please help me with this question. ​

Please help me with this question.