How many combinations with repetition are allowed if n = 4 and r = 3

a. 20
b. 10
c. 27
d. 9

Answer:

the second option

Step-by-step explanation:

In order to calculate efficiency

Option A

528 ÷ 24 = 22 mi/gal

Option B

690 ÷ 30 = 23 mi/gal

Option C

840 ÷ 42 = 20 mi/gal

Option B, gives the best fuel efficiency because the car can travel further using 1 gallons of fuel than others.

Answer:

24/5  miles/hour    = 4.8 miles /hour

Step-by-step explanation:

(4/5) x6 = 24/5 = 4.8

Answer:

[tex]\frac{24}{5}\ \small (m/h)[/tex]

Step-by-step explanation:

He jogs

4/5 mile in 1/6 hour

then ,He jogs (we multiply both sides by 6)

[tex]6\times \frac{4}{5} m\ \ \ \text{in} \ \ \ 6\times \frac{1}{6} h[/tex]

then ,He jogs

[tex]\frac{24}{5} m\ \ \ \text{in} \ \ \ \frac{6}{6} h\\\\\text then \ he \ jogs\\ \frac{24}{5} m\ \ \ \text{in} \ \ \ 1 h\\[/tex]

The sampling method that ensures the  accuracy and generalizability of findings is a random sampling.

The term random samping is a sampling technique in which the participants are selected in a random manner from the population. The sample is selected in such a way that it is representative of the entire population.

The sampling method that ensures the  accuracy and generalizability of findings is a random sampling.

Learn more about random sampling: https://brainly.com/question/12719656

#SPJ1

Answer:

See below ~

Step-by-step explanation:

Given

Equating x coordinates to find the value of x

Equating y coordinates to find the value of y

Compare coordinates

And

Answer:

5

Step-by-step explanation:

half of 10 is 50 on tenth of 50 is 5

Answer:

Jessiah has 14 pencils

Miles has 28 pencils

Grace has 8 pencils

Step-by-step explanation:

I'm going to assume that you mean Jessaih instead of Jessia because otherwise it would be impossible to solve

Let the # of Jessaih's pencils equal j, # of Grace's pencils equal g, # of Miles' pencils equal m,

j=g+6

m=2j

So m=2(g+6) or 2g+12

Therefore, g+g+6+2g+12, or 4g+18=50, so g = 8

j=8+6, which is 14

m = 2(14), which is 28

Answer:

-135

Step-by-step explanation:

-15*9=-135

Answer:

[tex]\Longrightarrow: \boxed{\sf{5(5a+8)}}[/tex]

Step-by-step explanation:

Use the distributive property.

Distributive property:

⇒ 5*5=25

⇒ 5*8=40

Rewrite the problem.

⇒ 5*5a+5*8

Solve.

Multiply.

⇒ 5*5a=25a

⇒ 5*8=40

Rewrite the expression.

⇒ = 25a+40

I hope this helps! Let me know if you have any questions.

Answer:

as a non percent 3/6 or 50%

Step-by-step explanation:

A number less than 4 would be 1,2 and 3  so you have 3/6 die chance

Vs. 1,2,3,4,5,6 which are all under 47 so rolling a number like that would be 100% or 6/6

Answer:

24 pages per hour :)

Step-by-step explanation:

We need to divide to solve :)

144/6 = 24

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

1 2 3

Step-by-step explanation: 1 times 18, 2 times 9, 3 times 6

Answer:

Solution

A=2(wl+hl+hw)=2·(4.9×10-3·5.2×10-3+9.1×10-3·5.2×10-3+9.1×10-3·4.9×10-3)≈2.3478×10-4m²

Step-by-step explanation:

Answer:

x > -9

Step-by-step explanation:

Hello!

We can solve this equation like any normal equation, just remember to flip the sign when dividing or multiplying by a negative number.

Your solution is x > -9

Hi! I am new here!♡

Hope it helped! Stay healthy!♡

x/3+5>3 => x/3> -3

x> -9

Answer:

Step-by-step explanation:

x=first number; y=second number

x+y=85

y-4=2x

Solve-

y=85-x

(85-x)-4=2x

81=3x

x=27

Plug in-

(27)+y=85

y=58

Irrational number can be written as decimal number that, neither a terminating decimal or repeating decimal. Thus, the option D is the correct option, which is a number that can be written as a decimal that neither repeats nor terminates.

What is a irrational number?

Irrational numbers are the number which is the real number but not the rational number(a/b).The irrational numbers can not be represents in the fractional form.

Irrational numbers are written in the form of root of a number such as,

,    ,     etc.

Irrational number can be written as decimal number that, neither a terminating decimal or repeating decimal.

Lets check all the given options as,

A) A number that can be written as a decimal that repeats and does not terminate- Irrational numbers is a decimal which does not repeats. Thus this is not correct option.

B) A number that can be written as a decimal that terminates and does not repeat- Irrational numbers is a decimal which does not terminate. Thus this is not correct option.

C) A number that can be written as a square root that does not result in a whole number-This does not explain the property of irrational number. Thus this is not correct option.

D) A number that can be written as a decimal that neither repeats nor terminates-Irrational number can be written as decimal number that, neither a terminating decimal or repeating decimal. Thus this is the correct option.

Hence, A number that can be written as a decimal that neither repeats nor terminates the option D is the correct option.

Answer:

1) d

2) a

3) c

4) b

Step-by-step explanation:

Answer:

∠ E = 43°

Step-by-step explanation:

∠ BGE and ∠ FHC are alternate exterior angles and are congruent , then

∠ BGE = 119°

the sum of the 3 angles in Δ BGE = 180°, that is

∠ E + 18° + 119° = 180°

∠ E + 137° = 180° ( subtract 137° from both sides )

∠ E = 43°

Answer:

43

Step-by-step explanation:

so, it gives your angle FHC and angle B. remember B because it is important a little later, so you know that angle FHC=119. and if you remember learning congruent angles, you would know that angle HGA also equals 119 because they are corrisponding angles. so, you know they are corrisponding, how does that help you? well, if you remember learning that vertical angles are congruent, then it tells you that FHC=HGA, also meaning that HGA=119. and remember how you know that angle B=18? this also helps because you know that a triangles angles always equal 180, so you simply add 119+18=137 degrees, and you want the unknown angle being m<E and which to find you simply subtract 180-137=43 so, M<E=43 because subtracting 180-137 gives you the unknown.

Answer:

Step-by-step explanation:

The best way to see the answer to the question is to go the midpoint of AB.You will note that the midpoint of AB looks like T is slightly to the left of the midpoint and down.

Do the same thing with q. Add p and q the way 2 vectors would be added together. So AT is 1/2(p + q)

Starting at A draw 1/2 p. Maintaining the same angle for q, draw 1/2 q at the end of 1/2 p. Hence the answer is vector(AT ) = (1/2 p + 1/2 q)

Answer:

Step-by-step explanation:

3(2x-5) +2x+3=1       Distribute the 3

6x-15+2x+3=1     Combine like terms

8x-12=1   Add 12 to 1

8x=-12  Divide by 8

x=13/8

Answer:

x = [tex]\frac{13}{8}[/tex]

Step-by-step explanation:

3(2x - 5) + 2x + 3 = 1 ← distribute parenthesis and simplify left side

6x - 15 + 2x + 3 = 1

8x - 12 = 1 ( add 12 to both sides )

8x = 13 ( divide both sides by 8 )

x = [tex]\frac{13}{8}[/tex]

Answer:

I thank it is D

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

or 4/12 if not simplified

See analyris

[tex]Hlug\ in\ the\ value\ of \left.\ t.\right\}[/tex]

[tex]The\ infital\ ampunt\ in\ the\ sample:[/tex]

[tex]t=0_{-1}\ \ \ \ \ f(t)=39\omega\bullet(\frac{1}{2})^\frac{0}{14}[/tex]

                        [tex]=3900\ g.[/tex]

[tex]Ater\ bo\ busis.[/tex]

[tex]t=6,\ \ \ \ \ A(t)=2900\times(\frac{1}{2})^\frac{60}{14}[/tex]

                       [tex]=3900\times(\frac{1}{2})^\frac{30}{7}[/tex]

                       [tex]\approx 209.[/tex]

I hope this helps you

:)

Subtraction is a mathematical operation. The best policy to buy is a 20-year term policy.

Subtraction is a mathematical operation that reflects the removal of things from a collection. The negative symbol represents subtraction.

Since we want the policy to last till the younger child is 22 years. And the present age of the younger child is 3 years. Therefore, the period for which the policy must work is 19 years (22-3).

Therefore, the best policy to buy is a 20-year term policy.

Learn more about Subtraction:

https://brainly.com/question/1927340

As you can see, the area of the scarf is equal to the area of the rectangle minus the area of the 2 semi-circles (which form a circle)

Now, we calculate the area of the rectangle : 28 x 15 = 420 in2

The diameter of the circle is 15in -> The radius = 15 : 2 = 7.5in.

We now find the area of the 2 semi-circles : 7.5 x 7.5 x 3.14 = 176.625 in2

So, the area of the scarf is : 420 - 176.625 = 243.375 in2