Please explain this.​

Answer:

15%

Step-by-step explanation:

0.15 x 100 = 15%

The volume of plaster Darla needs for the miniature stairs is 418³.

The volume is the space occupied by a three-dimensional object.

Volume is the product of the multiplication of length, width, and height.

We first calculate the total volume for this situation, assuming that the stairs have not cut portions.

Secondly, calculate the volume of the cut portions and subtract the result from the total volume to get the volume of the stairs, which represents the quantity of plaster required by Darla.

Length of the miniature stairs = 12 cm

Width of the miniature stairs = 11 cm

Height of the miniature stairs = 4 cm

The volume of the stairs with the cut portion = 528 cm³ (12 x 11 x 4)

The length of the cut portion of the stairs = 12 cm

The width of the cut portion of the stairs = 11 cm

The height of the cut portion of the stairs = 2 cm (4 - 2)

The volume of the cut portion of the stairs = 110 cm³ (11 x 5 x 2)

The volume of the stairs without the cut portion = 418 cm³ (528 - 120)

The total volume of plaster can also be computed separately as the volume of the larger object plus the volume of the smaller object.

418 cm³= (7 cm x 4 cm x 11 cm) + (5 cm x 2 cm x 11 cm)

= (308 cm³ + 110 cm³)

Thus, the quantity (volume) of plaster Darla needs is 418 cm³.

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reertttAnswer:

treryeryutruytruw

Step-by-step explanation:

tryutrytry

Answer:

The outcomes that have more than 1 female are -

MFF, FMF, FFM, FFF

Step-by-step explanation:

Given - Kias mom is having triplets. Each baby could either be male or female.

To find - Which outcome would be included in the compound event "more than one female"

Solution -

The sample space outcomes are -

{MMM, MMF, MFM, MFF, FMM, FMF, FFM, FFF}

Now,

The outcomes that have more than 1 female are -

MFF, FMF, FFM, FFF

Answer:

D)2^3 x 3^2

Step-by-step explanation:

2 x 2 x 2 = 8

3 x 3 = 9

8 x 9 = 72

Answer:

Tarea:

Ana compró una cartera cuyo precio es x dólares con el 10% de descuento y un perfume con precio original en dólares con un descuento del 15%. ¿Cuánto gastó Ana en total?

- Solución:

El precio estará en lenguaje algebraico, ya que no nos dan el dato de cuánto costó cada artículo.

• Hallamos el precio de la cartera con el descuento:

El precio original es x, entonces:

Regla de tres:

100 % --------> x

10 % -----------> ?

10 . x : 100 = ?

10x/100 = ?

El 10% del precio de la cartera es 10x/100.

Entonces el precio de la cartera es (x-10x/100).

• Hallamos el precio del perfume con el descuento:

El precio original es y, entonces:

Regla de tres:

100% -------> y

15 % --------> ?

15.y/100

El 15% del perfume es 15y/100.

Entonces el precio del perfume con el descuento es (y-15y/100).

Entonces lo que gastó en total es:

(x - 10x/100) + (y - 15y/100)

Step-by-step explanation:

pls give me brainless

To get an explicit value for this convergent series is not straightforward and may not be possible using elementary methods. Therefore, I can't provide you with the exact value if convergent.

To determine whether the series ∑n=1[infinity] 1/n(n+5) converges or not, we can use the comparison test. The comparison test states that if 0 ≤ a_n ≤ b_n for all n and the series ∑b_n converges, then the series ∑a_n also converges. Conversely, if the series ∑b_n diverges, then the series ∑a_n also diverges.
Your series is: ∑n=1[infinity] 1/n(n+5)
Let's compare it with the series: ∑n=1[infinity] 1/n^2
First, note that 0 ≤ 1/n(n+5) ≤ 1/n^2 for all n. Since the series ∑n=1[infinity] 1/n^2 is a p-series with p=2, which is greater than 1, it converges. Therefore, by the comparison test, the series ∑n=1[infinity] 1/n(n+5) also converges.
Converges (y/n): y

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Answer:

The slope is -6

Step-by-step explanation:

12x+2y=24

We want to find the slope of a line that is parallel to this line.

Parallel lines have the same slope, so we need to find the slope of this line.

We can get this equation in slope intercept form to find the slope

y = mx+b  where m is the slope

Subtract 12x from each side

2y = -12x+24

Divide each side by 2

y = -12x/2 +24/2

y = -6x+12

The slope is -6

Submarine 1 : at 4,863 feet and is ascending 81.1 feet per minute

Submarine 2: at 3,645 feet and is ascending 76.9 feet per minute

so, step 1:

The third statement is the true

Step 2:

For the same depth

-4,863 + 81.1 m = -3,645 + 76.9 m

solve to find m

so,

81.1 m - 76.9 m = 4863 - 3645

4.2 m = 1,218

m = 1,218/4.2 = 290 minutes

==============================================================================

Answer:

Left box:  1/2n

Right box = 2n - 22

Step-by-step explanation:

Since we want one-half the number and n represents the unknown number, we have 1/2n on the left-hand side of the equation.

Thus, you want to put 1/2n in box on the left.

Twice the number and 22 less than this is given by:  y: 2n - 22 less than this means we subtract.  Thus, we have 2n - 22 as the numerator on the right hand side of the equation.

Thus, you want to put 2n - 22 in the box on the right.

Answer:

I think its 44.9

Step-by-step explanation:

Henry opens a savings account with an annual interest rate of 4.5 percent. After a year, he gets $75,000 in payment. He made a deposit into the savings account of $72,831.68.

Here are the steps on how to calculate the amount Henry invested:

Convert the annual interest rate to a monthly rate.

\(\begin{equation}4.5\% \div 12 = 0.375\%\end{equation}\)

Calculate the number of years.

\(\begin{equation}\frac{18 \text{ months}}{12 \text{ months/year}} = 1.5 \text{ years}\end{equation}\)

Use the compound interest formula to calculate the amount Henry invested.

\(\begin{equation}FV = PV * (1 + r)^t\end{equation}\)

where:

FV is the future value ($75,000)

PV is the present value (unknown)

r is the interest rate (0.375%)

t is the number of years (1.5 years)

\(\begin{equation}\$75,000 = PV \cdot (1 + 0.00375)^{1.5}\end{equation}\)

\$75,000 = PV * 1.0297

\(\begin{equation}PV = \frac{\$75,000}{1.0297}\end{equation}\)

PV = \$72,831.68

Therefore, Henry invested \$72,831.68 in the savings account.

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The equation of the line in point-slope form and in​ slope-intercept form are both y = 1/2x.

1. Point-Slope Form: y - y1 = m(x - x1), where m is the slope of the line and (x1, y1) is a point on the line.

2. Slope-Intercept Form: y = mx + b, where m is the slope of the line and b is the y-intercept.

3. Standard Form: Ax + By = C, where A and B are coefficients that define the slope and y-intercept of the line.

If a line has a slope of 1/2 and passing through the origin, then:

m = 1/2

(x1, y1) = (0,0)

Plug in the values in the point-slope form and in​ slope-intercept form.

point-slope form

y - y1 = m(x - x1)

y - 0 = 1/2(x - 0)

y = 1/2x

slope-intercept form

y = mx + b

y = 1/2x + b

Substitute the values of x and y and solve for the y-intercept, b.

0 = 1/2(0) + b

b = 0

y = 1/2x + 0

y = 1/2x

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add all the angles and make them equal to 360

88 + 108 + (3x-6) + 2x = 360

196 + 5x -6 = 360

190 + 5x = 360

5x = 170

x = 34 = answer

Answer:

x = 34

Step-by-step explanation:

Answer:

f(x)= 25(1 + 0.20)^t

Step-by-step explanation:

The formula- f(x)= a(1+r)^x

a= initial amount (25)

r= growth rate (20%... 0.20)

x= # of times (we don't have that in here)

When you plug in the values, you get

f(x)= 25(1 + 0.20)\({t}\)

hope this helps!!

The 4 tests for similar triangles are:-

AAA: Three pairs of equal angles.

SSS: Three pairs of sides in the same ratio.

SAS: Two pairs of sides in the same ratio and an equal included angle.

ASA: Two angles and the side included between the angles of one triangle are equal

What is AAA,SAS,ASA,SSS?

According to the SSS rule, two triangles are said to be congruent if all three sides of one triangle are equal to the corresponding three sides of the second triangle. 

According to the SAS rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the corresponding two sides and angle between the sides of the second triangle.

According to the ASA rule, two triangles are said to be congruent if any two angles and the side included between the angles of one triangle are equal to the corresponding two angles and side included between the angles of the second triangle.

According to the  AAA rule, "if in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio (or proportion), and hence the two triangles are identical."

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The number of choice out of 7 that consumer have are 42.

The term permutation alludes to a numerical computation of the quantity of ways a specific set can be sorted out. Set forth plainly, a change is a word that depicts the quantity of ways things can be requested or organized. With stages, the request for the course of action matters.

Number of choices of side dishes does a customer have,

total dishes(n)=7 , r = 2

ⁿP₂

⁷P₂

7×6 = 42

Thus required number of ways are 42.

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Answer:

10 quarters is the answer thx for the points

Answer:

To complete the first set of data so that it has six values and a mean of 21, you can add the following values: 20, 20.5, 20.5, 21.5, 21.5, 21.

The mean of this set is calculated as follows: (20 + 20.5 + 20.5 + 21.5 + 21.5 + 21) / 6 = 21.

To complete the second set of data so that it has six values and a mean of 21, you can add the following values: 20, 21, 21, 21, 21, 22.

The mean of this set is calculated as follows: (20 + 21 + 21 + 21 + 21 + 22) / 6 = 21.

The amount of money in Davinder's account after five years is equal to £236.

Mathematically, simple interest can be calculated by using this formula:

S.I = PRT or S.I = A - P

Where:

Substituting the given parameters into the simple interest formula, we have;

S.I = 200 × 4.5/100 × 5

S.I = 200 × 0.045 × 4

S.I = £36.

Next, we would calculate the future value as follows;

Future value, A = S.I + P

Future value, A = £36 + £200

Future value, A = £236.

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The time at which Eliza woke up as per given duration of her sleep is equal to 18:20 (or 6:20 PM).

To determine the time Eliza woke up,

Add the duration of her sleep (8 hours and 45 minutes) to the time she went to sleep (9:35).

First, let's convert the duration of sleep to minutes,

8 hours

= 8 × 60

= 480 minutes

45 minutes = 45 minutes

Now, let's add the minutes of sleep to the minutes of the sleep start time,

9:35 + 480 minutes + 45 minutes

Adding the minutes, we get,

9:35 + 525 minutes

To convert the minutes back into hours and minutes,

divide 525 by 60 to get the additional hours and remainder as the additional minutes,

525 minutes ÷ 60

= 8 hours with a remainder of 45 minutes.

Adding the additional hours and minutes to the sleep start time,

9 hours + 8 hours = 17 hours

35 minutes + 45 minutes = 80 minutes

Since 80 minutes is equivalent to 1 hour and 20 minutes, adjust the time accordingly,

17 hours + 1 hour = 18 hours

80 minutes - 60 minutes = 20 minutes

Therefore, time at which Eliza woke up is  18:20 (or 6:20 PM).

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The minimum sample size required to ensure that the estimate has an error of at most 0.15 at the 99% level of confidence = 426

Here, the population variance is σ² = 1.44

The mean is \(\bar{x}\) = 6

And the margin of error is  E = 0.15

The standard deviation is given by,

⇒ σ = \(\sqrt{1.44}\)

⇒ σ = 1.2

Here, the confidence level is 99%

So, the level of signoficance would be,

⇒ α = (100 - 99)%

⇒ α = 0.01

From the normal distribution table the critical value would be,

\(z_{\alpha /2}\) = 2.58

Now we find the sample size :

\(n=(\frac{z_{\alpha /2}\times \sigma}{E} )^2\\\\n=(\frac{2.58 \times 1.2}{0.15} )^2\)

n = 426

Therefore, the sample size is 426

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585 miles per 9 hours

Step-by-step explanation:

715miles per 11 hours

/11 to determine miles per hour

65 miles per 1 hour

× 9 to determine miles per 9 hours

585 miles per 9 hours

Answer:

(Top right) 4

(middle) 9

(bottom left) 3/1 (milk to eggs)

Step-by-step explanation:

I'll just do the workings,

First Vertical Row

6/2 (as you need to put the milk over the eggs) = 3/1 (simplify the fraction, both can be divided by 2)

= 3/1

Second Vertical Row

= x/3 = 3/1 (x is basically milk for the second vertical row)

= x = 3/1 x 3

= x = 9

Milk = 9

Third Vertical Row

x is the egg,

= 12 / x = 3/1 (3/1 is the same as 3)

= x= 12 / 3

= x = 4

Egg = 4

Answer:

21x+4

Step-by-step explanation:

X’s: 21x

#’s: 4

So it will be 21x+4

Answer:

720 minutes

Step-by-step explanation:

Total phone bill = $127.95

Service plan fee = $19.95

Total cost per minute = 127.95 - 19.95

= $108.00

No. of minutes used = Total cost per minute / Rate per minute

= 108.00 / 0.15

= 720 minutes

Answer:

The probability is 1/26

Step-by-step explanation:

Here, we have two different sample spaces to work with and we want to calculate a compound probability.

Firstly in a deck of cards which contain a total of 52 cards, there are 4 cards labeled 9. Thus the probability of selecting a 9 is 4/52 = 1/13

Secondly in a flip of coin the probability of the coin landing on head is 1/2

Thus the probability of selecting a 9 and the coin landing on head = probability of selecting a nine * probability of the coins landing on head= 1/13 * 1/2 = 1/26

Answer:

A) 315/1005

Explanation:

Total choices: 120 + 255 + 35 + 60 + 200 + 110 + 75 + 150 = 1005

Favorable choices: 255 + 60 = 315

probability:

favorable choices/total choices

315/1005

21/67

Answer:

Pr(Cb) & Pr(cost $15) = 15(Ncb)/(T1×T3)

Step-by-step explanation:

Classification of the book in to 3

First let's assign terms to each probability

Let:

T1= total number of type of Reader's group

T2 = total number of Type of book

T3 = total number of type of Cost

Probability of child's book and cost $15= Pr(Cb) & Pr(cost $15)

Then find probability of child's book and cost separately:

Pr of child's book = Pr(Cb)

Pr(Cb) = (number of child's book)/ total number of type of group

Ncb = number of child's book

Pr(Cb) = Ncb/T1

Pr (cost $15) = $15 book/total number of cost

Pr (cost $15) = 15/T3

probability of child's book and cost $15 = Pr(Cb) × Pr (cost $15)

= Ncb/T1 × 15/T3

Pr(Cb) & Pr(cost $15) = 15(Ncb)/(T1×T3)

Answer:

C. 20

Step-by-step explanation:

20 is the only value that makes x true. Basically x = 20.

We find this by doing the "good ol' Isolate the variable by dividing each side by factors that don't contain the variable."

Hope this helps and have a nice day!