David spent $13 of the $20 that is in his wallet. What percentage is equivalent to the amount David spent?

Answer:

Step-by-step explanation:

1.25/.8=a

[tex]\frac{5}{4} /\frac{4}{5}[/tex]

1.25/4/5

Answer:

Hey mate.....

Step-by-step explanation:

This is ur answer.....

Variable costs are costs that change as the quantity of the good or service that a business produces changes. Variable costs are the sum of marginal costs over all units produced. They can also be considered normal costs. Fixed costs and variable costs make up the two components of total cost. 

Hope it helps you!

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Answer:

25h + 45

Step-by-step explanation:

4(h+6) 7(3h+3)

4h + 24  21h + 21

25h + 45

Answer:

Step-by-step explanation:

The Cauchy integral formula states that the values of a holomorphic function inside a disk are determined by the values of that function on the boundary of the disk. More precisely, suppose f : U → C f: U \to \mathbb{C} f:U→C is holomorphic and γ is a circle contained in U.

Answer:

-3x - 14 < -5

-3x < 9 (14 - 5)

x < 9: (-3)

x < -3

=> x = { -4, -5, -6, ...}

Step-by-step explanation:

Answer:

  D.  All of the above

Step-by-step explanation:

Insurance costs are influenced by any factor that can reasonably be tied to the cost of claims made against an insurance policy. These costs are carefully analyzed by insurance companies to determine correlations that may be influential.

__

In general, women have different driving habits than men, so gender has an influence on insurance costs.

Some areas of a city have different statistics related to vandalized or stolen vehicles, so may influence insurance costs. Certain areas may have different accident statistics, or may experience different kinds of accidents, so repair costs may differ by where you live or where you drive.

Some cars are more expensive to repair than others. Any car with custom features (stereo, upholstery, paint) will likely cost more to repair (and may be subject to more vandalism).

So, all of the above influence insurance costs.

Answer:

I need help right now with math

Step-by-step explanation:

Answer:

4 2/5 × 1/2= 2 1/5 / 2.2 miles

Step-by-step explanation:

hope this helps.

Step-by-step explanation:

collect the like terms 12x+4=9x+8

12x-9x=8-4

3x=4

X=1.333

Answer:

8

Step-by-step explanation:

➝12x+4+9x+8=180

➝12x+9x+4+8=180

➝21x+12=180

➝21x=180-12

➝21x=168

➝x=168/21

➝x=8

Answer:

angle 3 is 30 and 4 is 150 because total angle is 180 between 3 and 4

Answer:

Step-by-step explanation:

From the given information:

We are to find the following:

1)

Directional hypothesis: The directional hypothesis is the groups with different bedroom lightning conditions having a different proportion of eyesight proportions.

2)

The non directional hypothesis is each group having the same proportion of eyesight problems regardless and independent of the condition of the bedroom lightning.

3)

Control group: Children that slept in darkness

4)

Experimental groups: Children that slept in night light and those that slept with lamp.

5)

Independent variable: Light condition of the bedroom

Dependent variable: Eye sight problem.

Answer:

It would be graphed at 0.

Step-by-step explanation: The answer would be graphed at 0 on a number line because 0 is its opposite.

Hope this helps!

Answer:

24

Step-by-step explanation:

Area of a triangle

A = 1/2 bh

b=12

h=4

A= 1/2 * 12 * 4

A = 24

Answer:

Total paint left over = [tex]\frac{13}{12}L[/tex]

Step-by-step explanation:

Given - To paint a house, 5/4 L of white paint and 1/2 L of blue paint

             were mixed. In the end only 2/3 L of the mixture were used.

To find - How many liters of paint were left over ?

Proof -

Given that,

5/4 L of white paint and 1/2 L of blue paint were mixed.

So, total mixture = [tex](\frac{5}{4} + \frac{1}{2})L[/tex]

                          = [tex]\frac{5 + 2}{4}L[/tex]

                          = [tex]\frac{7}{4}L[/tex]

⇒Total mixture =  [tex]\frac{7}{4}L[/tex]

Now,

Given that ,

In the end only 2/3 L of the mixture were used.

So, total mixture left = [tex](\frac{7}{4} - \frac{2}{3})L[/tex]

                                = [tex]\frac{21 - 8}{12}L[/tex]

                                = [tex]\frac{13}{12}L[/tex]

∴ we get

Total paint left over = [tex]\frac{13}{12}L[/tex]

Answer:

question 1(2)

answer 4

question 2(3)

answer 1

question 3(4)

(a)6; factored

(b)7; factored

c(8); factored

Answer:

[tex]\boxed{12u^3+8u^2-6u+9}[/tex]

Step-by-step explanation:

[tex](8u^3+8u^2+6)+(4u^3-6u+3) = 8u^3+8u^2+6+4u^3-6u+3[/tex]

Once

[tex]8x+4x = 12x, \text{ as } x = u^3[/tex]

[tex]8u^3+8u^2+6+4u^3-6u+3 = 12u^3+8u^2+6-6u+3 = \boxed{12u^3+8u^2-6u+9}[/tex]

You don't need to factor.

Step-by-step explanation:

Yeah, 10°+15°+18°=43°

Also, they individually are less than 90° so yes

Answer:

48

Step-by-step explanation:

Area of a triangle is 1/2(base*height)

Plug in:

1/2(6*16)

1/2(96)

48

Answer: 1,600 cm

~ i really hope that this is correct, have a gr8 day my friend!~

Step-by-step explanation:

The studies in which the results may have been skewed by bias.

Others are:

A study on the average life span of a type of plant, where 50% of the data fell above the population mean.

A skewed or (biased) result, is known to often occur even if there was an accurate that is unbiased algorithm that is said to be seen as skewed (biased) data.

Note that when you If you wrongly remove or include some participants in your research, you can be able to get skewed data results.

Learn more about bias from

https://brainly.com/question/24491228

#SPJ2

Answer:

f(x) = 417(3.15) x the second option which is the only one with correct units from the question

Answer:

second one

Step-by-step explanation:

Answer:

37:31 or any other way of writing 37 to 31

Step-by-step explanation:

Write the ratio the same way the question asks, there are 37 girls and 31 boys. This cannot be simplified.

Given:

Number of strawberry candy = [tex]\bold{8\ pieces}[/tex]

Number of rhubarb candy = [tex]\bold{7 \ pieces}[/tex]

Find the number of ways for equally distributing candy to all 5 children

Using formula:

[tex]\to \bold{_{n} C_{r}=\frac{n !}{r!(n-r) !}}[/tex]

Calculating the distributing way for strawberry candy:

[tex]\to \bold{_{8} C_{5}=\frac{8 !}{5!(8-5) !}}[/tex]

           [tex]\bold{=\frac{8 !}{5! \ 3 !}}\\\\\bold{=\frac{8 \times 7 \times 6 \times 5!}{5! \ 3 \times 2\times 1}}\\\\\bold{=\frac{8 \times 7 \times 6 }{ 6}}\\\\\bold{=8 \times 7}\\\\\bold{=56}[/tex]

Calculating the distributing way for rhubarb candy:

[tex]\to \bold{_{7} C_{5}=\frac{7 !}{5!(7-5) !}}[/tex]

           [tex]\bold{=\frac{7 !}{5! \ 2 !}}\\\\\bold{=\frac{7 \times 6 \times 5!}{5! \ 2\times 1}}\\\\\bold{=\frac{ 7 \times 6 }{ 2}}\\\\\bold{=7 \times 3}\\\\\bold{=21}[/tex]

Adding both distributing ways:

[tex]\to \bold{56+21=77}[/tex] ways

Learn more:

probability: brainly.com/question/23044118

Answer:

Positive

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

if half of the trail mix is split in to 4, let's say the same for the other half. then there will be 8 bags.