two numbers are in the ratio 5:3.if they deffer by 18,what are the numbers?

Answer:

She will donate P-50/3 each time

Step-by-step explanation:

Now assuming total donation needed to be in the silver category Is P

We can assume also the three additional and equal donations be Q

So

Then 50 + 3Q = P

So we still don't know P

We can get Q by saying

3Q= P - 50

Q = (P - 50) /3

Answer:

It is an example of an observational study.

Step-by-step explanation:

The given number case is example of an observational study.

Observational studies are ones where researchers observe the effect of a risk factor, diagnostic test, treatment or other intervention without trying to change who is or isn't exposed to it. Cohort studies and case control studies are two types of observational studies.

Given:

In a study to support drug discovery for patients with lung cancer, patients were divided into 3 groups based on the severity of the disease.

Smoking and alcohol consumption habits were recorded for all 3 groups.

The above is somehow the example of research which requires an observation which does not change any data.

Learn more about observational study here:

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Answer:

4.

Step-by-step explanation:

7n - 12 = 16

7n = 16 + 12 = 28

Since 7n = 28, n = 28 / 7 = 4.

Answer:

B

Step-by-step explanation:

∠ CBD = ∠ ABE ( vertical angles ), thus

7x - 6 = 5x + 14 ( subtract 5x from both sides )

2x - 6 = 14 ( add 6 to both sides )

2x = 20 ( divide both sides by 2 )

x = 10

Thus

∠ ABE = 5x + 14 = 5(10) + 14 = 50 + 14 = 64° → B

Answer: $14.85

Step-by-step explanation:

given data:

yearly earnings = $38,600

there are 52weeks in a year, so his weekly wages

= $38,600/52

= $742.31

his state tax rate falls under the 2% rate due to his income

= 2/100 * $38,600

= $772/52

= $14.85 is withheld from his weekly wages for the state tax.

Answer:

16

Step-by-step explanation:

8/1=8

8x2=16

Answer: 6

Step-by-step explanation:

{3, 2, 2, 12, 6, 5, 14, 4}

To find the mean,add everything up, the divide it by how many numbers you added up.

So, do :

3 + 2 + 2 + 12 + 6 + 5 + 14 + 4 = 48

Then, because you added 8 numbers together, you would divide 8 from 48.

48 ÷ 8 = 6

So, your mean is  6

Answer:

2x(3x+5)+1(3x+5)

Step-by-step explanation:

The distributive law is the law that states that multiplying a number by a group of numbers is the same as doing each multiplication separately. Eg. A(B+C) =AB+AC

In the case of two sets of parenthesis it would look like:

2x(3x+5)+1(3x+5)

Which would give us:

6x^2 +10x +3x+5

6x^2+13x+5

The general format for 2 bracket ones would be:

(A+B) (C+D) =A(C+D) +B(C+D)

where the two terms in the first bracket go outside the second bracket twice individually because each term must be multiplied by all terms in the other bracket.

Hope this helped!

I'm not good in this but.....

x = years

9x-6x = 16-7

3x = 9

x = 3

That means the tree will grow three feet per year.

Answer:

2/3= 8/12

its simple had the same question in my homework

Answer:4/6, 6/9,8/12

Step-by-step explanation:You can get this by multiplying what ever number you want, as long as you do the same for the other number. Example, 2/3= 10/15, I just multiplied both sides with the same number.

Answer:

i think the answer is B because 3/4 is more than 2/3

Answer:

its b.

Step-by-step explanation:

if you convert them, so they both have the same dominator, nadias recipe ends up needing more flour.

Answer:

Gallons

Step-by-step explanation:

A gallon is a measurement of volume. The rest are all measurements, which are either SI units or measured in the US Customary system.

Answer:

x=11

Step-by-step explanation:

To Solve this equation, you need to understand the rules of complementary angles. In this case, XWY and YWZ make up XWZ. In this case, we would add them

5x+5+2x+8=90

7x+13=90

7x=77

x=11

Answer:

We know that....

c=6

a=2

so c/a = 6/2 = 3

Hope this helps....

Have a nice day!!!!!

Mark my ans as brainliest ang get 3 extra points

Answer: 3

Explanation: Here we're asked to evaluate [tex]\frac{c}{a}[/tex] if c = 6 and a = 2.

[tex]\frac{c}{a}[/tex] means the same thing as c divided by a and since we know that c = 6

and a = 2, we can substitute 6 in for c and 2 in for a and we have [tex]\frac{6}{2}[/tex] which is 3.

Answer:

[tex] \boxed{ \bold{\sf{ { \boxed{ \sf{8 {x}^{5} + 4 {x}^{4} - 12 {x}^{2} }}}}}}[/tex]

Option C is the correct option.

Step-by-step explanation:

[tex] \sf{4 {x}^{2} (2 {x}^{3} + {x}^{2} - 3})[/tex]

Distribute 4x through the parentheses.

[tex] \dashrightarrow{ \sf{4 {x}^{2} \times \: 2 {x}^{3} + 4 {x}^{2} \times {x}^{2} - 4 {x}^{2} \times 3}}[/tex]

[tex] \dashrightarrow{ \sf{8 {x}^{5} + 4 {x}^{4} - 12 {x}^{2} }}[/tex]

Hope I helped!

Best regards! :D

C is the correct option

Step-by-step explanation:

Answer:

[tex]\huge\boxed{\sf x = 5}[/tex]

Step-by-step explanation:

[tex]\sf 3x + 2= 17[/tex]

Subtracting 2 to both sides

[tex]\sf 3x = 17-2\\3x = 15[/tex]

Dividing both sides by 3

[tex]\sf x = 15/3\\x = 5[/tex]

The correct solution to the equation 3x + 2 = 17 is x = 5.

Let's find the correct solution to the equation 3x + 2 = 17:

Step 1: Subtract 2 from both sides to isolate the term with 'x':

3x + 2 - 2 = 17 - 2

3x = 15

Step 2: Divide both sides by 3 to solve for 'x':

3x / 3 = 15 / 3

x = 5

So, the correct solution to the equation 3x + 2 = 17 is x = 5.

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Answer:

i amm also strck in this

Please view the work for this problem in the picture below.

Answer:

[tex]\huge\boxed{\mathrm{False}}[/tex]

Step-by-step explanation:

Length of YM = 1 - (-6)   [This is it's endpoints]

YM = 1 + 7

YM = 8

Length of PW = 9 - 5    [Subtraction of endpoints to get the length]

PW = 4

So, Segment YM is not congruent to segment PW.

Answer:

32

you add everything together and put W X Y Z all pf those numbers where they belong!!

Good luck!!

Answer:

30

Step-by-step explanation:

w^2 +3x +y -z where w = 3, x = 8, y = 2 and z = 5

thus: (3^2) + 24 +2 - 5 = 30

Answer:

Step-by-step explanation:

Let the wallpaper be a rectangle

Area of a rectangle = Length * Width

A = LW

Perimeter P = 2L+2W

If the wallpaper is sold in rolls that are 2 feet wide, then the width is 2 feet, to get the length, substitute W = 2 and P = 60 into the formula for calculating the perimeter of a rectangle.

60 = 2L + 2(2)

60 = 2L + 4

2L = 60-4

2L = 56

L = 56/2

L = 28

The minimum length that will be purchased to cover the wall is 28 feet

Answer:

Coffee(time)

Step-by-step explanation:

A function's output variable will be:

output(input)

So we need to find the input variable and the output variable.

We know that when the time of day changes, we get a certain amount of coffee sold. This means that the amount of coffee sold is directly influenced by the time of day.

The time of day then becomes our input as the coffee sold relies on that number.

That leaves coffee sold as our output!

So the best name for a function in this scenario is Coffee(time).

Hope this helped!

Answer:

a = F/m

Step-by-step explanation:

F = ma divide m by both sides

F/m = a

Answer:

D

Step-by-step explanation:

Answer:

a.

Step-by-step explanation:

Answer:

2-2x?

Step-by-step explanation:

9 - [{x - (7 + x)}

9-(x-7-x)

9-2x-7

2-2x

For this question, you didn't gave enough details.

Read the function given by the question first.

After that substitute x with - 8.

Answer:

2x+8y

Step-by-step explanation:

Answer: 8x^2 - 15^2 + xy

Step-by-step explanation:

expand brackets by multiplying

(4x+5y)(2x-3y)+3xy

8x^2 - 12xy + 10xy - 15y^2 + 3xy

collect like terms

8x^2 - 15y^2 -12xy + 10xy + 3xy

solve

-12xy + 10xy + 3xy

=1xy (note: when writing/typing the answer, don't add 1 in front of the xy.)

final answer: 8x^2 - 15y^2 + xy

Answer:

5

Step-by-step explanation:

5.0990195135928 there is no whole number

Answer:

(3x + 5)(2x + 3)

Step-by-step explanation:

[tex]6 {x}^{2} + 19x + 15 \\ = 6 {x}^{2} + 10x + 9x + 15 \\ = 2x(3x + 5) + 3(3x + 5) \\ = (3x + 5)(2x + 3)[/tex]