A number is selected randomly from the integer from 10to30 what is the probability of picking a multiple of 4or5​

Answers

Answer 1

Answer:

[tex]\frac{3}{7}[/tex]

Step-by-step explanation:

Start by finding how many integers there are from 10-30...

30-10+1=20+1=21

Note we have to add 1 since it is inclusive.

Now, let's find how many multiples of 4 or 5 there are from 10-30...

4*3=12

4*4=16

4*5=20

4*6=24

4*7=28

5*2=10

5*3=15

5*4=20

5*5=25

5*6=30

5+5-1=9

Note we have to subtract 1 since 20 is counted twice.

The probability would be...

[tex]\frac{Multiples\ of\ four\ and\ five\ from\ 10-30}{Amount\ of\ integers\ between\ 10-30}=\frac{9}{21}=\frac{3}{7}[/tex]


Related Questions

Question
Is it possible to construct a triangle with side lengths of 3, 6, and 9 units? If not, explain why not

Answers

Answer:

No

Step-by-step explanation:

No.

The triangle inequality theorem says that ANY two sides of a triangle MUST be greater than the third side.

In this case 3+6 is equivalent to 9 (it wouldn't be a triangle; just be a straight line), NOT greater, therefore is is not possible to construct a triangle with the given side lengths.

Find the surface area of the sphere. Use 3.14 for π. Round your answer to the nearest tenth.
r=8

Answers

3.14 x 8 = 25.12 is the answer

Look at the three trees and the paths between them.Vani walks from Tree 1 to Tree 2 and then to Tree 3 - covering 335 metres in all. Raj walks from Tree 2 to Tree 3, then to Tree 1, and finally returns to Tree 2 - covering 540 metres in all.How far is Tree 1 from Tree 3?

Options

205 metres

875 metres

(we can't say)

215 metres

Answers

The distance from tree 1 to tree 3 is about 205 meters.

Equation

An equation is an expression used to show the relationship between two or more variables and numbers.

Let a represent the distance from tree 1 to 2, b from 2 to 3 and c from tree 3 to 1.

Hence:

a + b = 335

Also:

b + c + a = 540

a + b + c = 540

335 + c = 540

c = 205 meters

The distance from tree 1 to tree 3 is about 205 meters.

Find out more on Equation at: https://brainly.com/question/2972832

What is the decimal that represents 37 1/2%

Answers

Answer:

37.5%

Step-by-step explanation:

5 × 2^4 ÷ (7 + 3)
Show all steps! Thanks!
Use the Order Of Operations!

Answers

Answer:

Step-by-step explanation:

First exponent: 2^4= 16
5 x 16/(7+3)

Next parenthesis: (7+3)= 10
5 x 16/10

Then multiply: 5 x 16= 80
80/10

Finally, Divide: 80/10= 8

So your answer is 8.

Hope this helps! :D

Rex took out a loan for $5000 and planned to pay it back in 4 years. If he paid $600 in interest for those 4 years, what was the simple interest rate?.

Answers

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$600\\ P=\textit{original amount deposited}\dotfill & \$5000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &4 \end{cases} \\\\\\ 600=5000(\frac{r}{100})(4)\implies \cfrac{600}{5000(4)}=\cfrac{r}{100}\implies \cfrac{3}{100}=\cfrac{r}{100}\implies \boxed{3=r}[/tex]

Number 22. Please help!!!

Answers

Answer:

-3 ≤ x ≤ 13

Step-by-step explanation:

Brainliest would be appreciated :)

volume of cylinder is 240m find volume of the cone have same base and height


Answers

Answer:

80 cubic m

Step-by-step explanation:

If they have the same base and height, a cone always has 1/3 of the volume of a cylinder.

Help me plssssssssss

Answers

Answer:

4 quarters, 10 dimes

Step-by-step explanation:

x + y = 14 --> x = 14 - y

$0.10x + $0.25y = $2.00, or 10x + 25y = 200

- we can plug this value for x from the first equation into the second:

10(14 - y) + 25y = 200

140 - 10y + 25y = 200

140 + 15y = 200

15y = 60

y = 4 --> 4 quarters ($0.25 x 4 = $1.00)

if y = 4, then x = 14 - y --> x = 10 --> 10 dimes (0.10 x 10 = $1.00)

matches the second equation where these add up to $2.00

Answer:

1 way is 10 dimes and 4 quartes

I can only come up with one way

wait hold on guys i am so freaking sorry im so bad at math um does anyone by any chance know what 4+8+8y–7 is? please im so sorry im bad at this

Answers

Answer:

8y + 5

Step-by-step explanation:

4 + 8 + 8y - 7

12 + 8y - 7

5 + 8y

8y + 5

Helppp please show work

Answers

Step-by-step explanation:

Given that:-

Side AC measures 6 unitsSide BC measures 9.5 unitsSide AB measures 11 units

To find:-

The cosB as a decimal rounded to the nearest hundredth

We know that,

[tex]{ \bigstar \: { \underline{ \boxed{ \cos( \theta ) \: = \sf\frac{adjecent \: side}{hypotenuse} }}}}[/tex]

Solution:

[tex] \longrightarrow \rm \cos(B) = \dfrac{BC}{AB} [/tex]

[tex]\longrightarrow \rm \cos(B) = \dfrac{9.5}{11} [/tex]

[tex]\longrightarrow \rm \cos(B) = \dfrac{95}{110} [/tex]

[tex]\longrightarrow \rm \cos(B) = 0.8 63[/tex]

[tex]\longrightarrow \rm \cos(B) \approx \: 0.9[/tex]

Therefore:

Cos B equals 0.9

Simplify Complex numbers 30 points

Answers

Answer:

o 1.

[tex] \frac{8 - 4i}{5i} \\ \\ \\ \frac{8 - 4i}{5i} \times \frac{ - 5i}{ - 5i} \\ \\ \frac{ - 40i + 20 {i}^{2} }{ - 25 {i}^{2} } = \frac{ - 40i - 20}{25} \\ \\ \frac{ - 20 - 40i}{25} = \frac{ - 20}{25} - \frac{40}{25} i \\ \\ = - \frac{4}{5} - \frac{8}{5} i \\ \\ = - 0.8 - 1.6i[/tex]

__o__o___

o 2.

[tex] \frac{2i}{ - 3 + 4i} \\ \\ \frac{2i}{ - 3 + 4i} \times \frac{ - 3 - 4i}{ - 3 - 4i} \\ \\ \frac{ - 6i - 8 {i}^{2} }{9 - 16 {i}^{2} } = \frac{ - 6i + 8}{9 + 16} \\ \\ \frac{8 - 6i}{25} = \frac{8}{25} - \frac{6}{25} i \\ \\ = 0.32 - 0.24i[/tex]

__o__o__

o 3.

[tex] \frac{2 - 3i}{1 - 2i} \\ \\ \frac{2 - 3i}{1 - 2i} \times \frac{1 + 2i}{1 + 2i} \\ \\ \frac{2 + i - 6 {i}^{2} }{1 - 4 {i}^{2} } = \frac{2 + i + 6}{1 + 4} \\ \\ \frac{8 + i}{5} = \frac{8}{5} + \frac{1}{5} i \\ \\ = 1.6 + 0.2i[/tex]

__o__o__

o 4.

[tex] \frac{3 + 2i}{4 + i} \\ \\ \frac{3 + 2i}{4 + i} \times \frac{4 - i}{4 - i} \\ \\ \frac{12 + 5i - 2 {i}^{2} }{16 - {i}^{2} } = \frac{12 + 5i + 2}{16 + 1} \\ \\ \frac{14 + 5i}{17} = \frac{14}{17} + \frac{5}{17} i[/tex]

Can someone please solve this for me :)

Answers

Step-by-step explanation:

4x^2 + 15 = -9

4x^2 = -24

x^2 = -12

x = 2√3i

PLSSS HELP IF YOU TURLY KNOW THISS

Answers

Answer:

6

Step-by-step explanation:

15×2= 30

5×?

?= 30/5

? = 6

Answer:

Missing numerator = 6

Step-by-step explanation:

Let us assume that,

→ Missing numerator = x

Now we have to,

→ Find the required value of x.

Forming the equation,

→ 2/5 = x/15

Then the value of x will be,

→ 2/5 = x/15

→ 2 × 15 = x × 5

→ 30 = 5x

→ 5x = 30

→ x = 30/5

→ [ x = 6 ]

Hence, the value of x is 6.

Please help! with explanation please

Answers

Answer:

a = 12

b = 6

Step-by-step explanation:

You have a 30°-60°-90° triangle which is a special right triangle. We memorize the ratios of the sides and can find the sides given just one side, by using the relationships between the sides, so we don't have to use trig ratios.

Generally, the LONGEST side (hypotenuse) is twice the shortest side. Or, the SHORTEST side is half the longest side (hypotenuse). The LONGER LEG is the short leg × sqrt(3).

Or the SHORT LEG is the

longer leg/sqroot(3)

You are given the long leg here. You have:

Long leg = 6sqroot(3)

So the short leg must be 6.

bc, longer leg IS Short leg×sqroot(3)

short leg =6

Then the LONGEST side (hypotenuse) has to be twice that.

LONGEST side = 12

Where it says "Prove side c" maybe that is like doing a check.

6^2 + (6sqrt3)^2 = 12^2

36 + 108 = 144

144=144

CHECK!

Please help me I need help

Answers

Answer:

huh

Step-by-step explanation:

This is the same dilation that you used in Question 3. What scale factor was used to create the dilated Triangle M'S'V'? In your answer, give the scale factor that was used and explain how you calculated it.
M'S'V': M' (-2, 2), S' (4, 2), V' (2, -2)
MSV: M (-3, 3), S (6, 3), V (3, -3)​

Answers

The  scale factor was used to create the dilated Triangle M'S'V' is 2/3

How to determine the scale factor of coordinates

Given the following coordinate point M (-3, 3), S (6, 3), V (3, -3)​ which was dilated to get the coordinate point M' (-2, 2), S' (4, 2), V' (2, -2)

You can see that the scale factor is the ratio of the x coordinate of the image to that of the preimage as shown:

Determine the scale factor

Scale factor M'/M = -2/-3 =4/6 = 2/3

Hence the  scale factor was used to create the dilated Triangle M'S'V' is 2/3

Learn more on scale factor here: https://brainly.com/question/25722260

A regular hexagon is divided into four triangles. Which of the following is correct?

a) ΔABF≅ ΔEDF


b) ΔFDC≅ ΔFCB


c) ΔABF≅ ΔFBC


d) ΔFDC≅ ΔBCF
Pleasee answer fastt

Answers

Answer:

b)

...............

Having drawn and labeled a diagram, like you should have.
The six sides of the regular hexagon are each 4 (24 / 6)
The sides of the the triangle are 12 (they have been trisected with a 4 unit side one of sections.
Since the area of the triangle and the area of hexagon are readily determined,
what is the total area of the little triangles?
The area of an equilateral triangle of side x is x2√3 / 4, in this case 4√3
What is the area of all three?

Please help I will give brainliest

Answers

Answer:

B) Infinitely many solutions.

Step-by-step explanation:

-x + 4y = 24

4y = x + 24

y = 1/4x + 6

It is the same equation twice.

pls help me do it its for my homework

Answers

Question:

Add 9 to y

Answer :

9 + y

A number cannot be added to variable so final product will be above expression formed!

Answer:

9+y

Step-by-step explanation:

+++++++++in the graph

an alphabet can't be added to a number

the scatter plot shows how much a puppy weighs within a certain time period.

what is the correlation between days and weight?

About how much did the puppy gain during this time period? HELP PLEASE!!!! ​

Answers

Answer:

There is a positive correlation and the puppy gained about 1.5 kg

Step-by-step explanation:

→ Find initial weight

4.5

→ Find final weight

6.0

→ Subtract

1.5

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Cheyenne ran a 6.86-kilometer race in 49 minutes. What was her speed in kilometers per hour?​

Answers

Answer:

i didnt mean to press answer

Step-by-step explanation:

For each inequality, show it on the number line and write all one-digit integers that satisfy it. k>0

Answers

The one-digit integers that satisfy the inequality k>0 are 1, 2, 3, 4, 5, 6, 7, 8, and 9.

What is a number line?

A number is a line that is made up of positive and negative numbers with the distance between the preceding and succeeding unit to be 1.

The negative values on the number line are -1, -2, -3...-9 while the value greater than zero are 1, 2, 3, 4,...9

Hence the one-digit integers that satisfy the inequality k>0 are 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Learn more on number line here: https://brainly.com/question/26480824

Help plsssssssssssssss​

Answers

Answer:

55: 62.44

26 :29.52

62.44 - 29.52 = 32.92

Step-by-step explanation:

Have a good day!

Answer:

£81

Step-by-step explanation:

£55+£26=£81

What is area of shaded

Answers

Answer:225

Step-by-step explanation:

we start by finding the area of the unshaded triangles and subtracting them from the total area of the box.

The total length of the top is 20 and the total length of the bottom side is 18

20-18=2 so the small unshaded part on the bottom side is 2. with this we can find the left triangle. triangle area is base times height over 2 so the area of the unshaded triangle on the left is 15*2/2=15.

We know the small unshaded bit on the right side is 6 as it is shown on the diagram. again, we can use base times height over 2 to get the area of the top unshaded triangle. 6*20/2= 60.

We can do base times height to find the total area of the rectangle

15*20=300

300-15-60=225

A gumball machine has 110 red gumballs. If the red gumballs are 25% of the total number of gumballs, how many gumballs are in the gumball machine?

Answers

Answer:

25% = 110

Therefore, 110 x 4 = 440 (100%)

Step-by-step explanation:

440 gumballs

In a classroom,
1
6
of the students are wearing blue shirts , and
2
3
are wearing white shirts. There are 18 students in the classroom. How many students are wearing shirts other than blue shirts or white shirts?

Answers

Answer:

3 students in blue and 12 in white

Step-by-step explanation:

set 1/6 and 2/3 of it and you need to find that of 18

so you take 2/3*18 and get 12 students

and 1/6*18 and get 3 students

!!!20 POINTS!!!


Q1: A factory produces candy bars, with mean weight 5 grams. After the machines were updated with new tech, a worker worries the candy bars are now lighter on average. To test this theory, the worker collects a random sample of candy bars and measures their mean weight. Identify the null and alternative hypotheses in this situation.

Answers

The null hypothesis in this situation is the mean weight of the candy bars is not lighter.

The alternative hypothesis in this situation is the mean weight of the candy bars is lighter.

What is a hypothesis?

A hypothesis is an idea that gives a temporary explanation to a phenomena which would be proved or disapproved by carrying out an experiment .

The null hypothesis states that there is no relationship between the population parameters. It is known as the true hypothesis. The alternative hypothesis states that there is a relationship between the population parameters.

To learn more about null hypothesis, please check: https://brainly.com/question/18306091

Show work please :)
2. 1/9 x 3/4
4. 5/7 divided by 2/3
5. 7.89 - 3.9

Answers

As per questions,

2.

[tex] \frac{1}{9} \times \frac{3}{4} [/tex]

As 3 and 9 can be cancelled, we get,

[tex] \frac{1}{3} \times \frac{1}{4} [/tex]

Now multiplying denominators and numerators,

[tex] \frac{1}{12} [/tex]

Hence, the required answer is [tex] \frac{1}{12} [/tex]

4.

[tex] \frac{ \frac{5}{7} }{ \frac{2}{3} } [/tex]

When the base denominator (2/3) is reciprocaled,

[tex] \frac{5}{7} \times \frac{3}{2} [/tex]

As we can't directly divide, so we can multiply them,

[tex] \frac{5 \times 3}{7 \times 2} [/tex]

[tex]→ \frac{15}{14} [/tex]

Hence, the required answer is [tex] \frac{15}{14} [/tex]

5)

[tex]7.89 - 3.9[/tex]

Direct subtraction, (Check solution in attached image)

[tex]→3.99[/tex]

What is the final cost of a $42
flower bouquet with 6% sales
tax?

Answers

$44.52 is the final cost of a flower bouquet.
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