When Ricardo was 9 years old, he was 56
inches tall. Ricardo is now 12 years old and
he is 62 inches tall. Find the percent of
increase in Ricardo's height to the nearest
centh.

Answer:

28.21 = 4x + 4.61

Step-by-step explanation:

Since x equals the bags of apples and he bought 4 of them, we would multiply x by 4 like this: 4x

$4.61 were already added to the total cost of $28.21

If we wanted to find out how much each bag cost, we subtract 4.61 from both sides

28.21 = 4x + 4.61

- 4.61.         - 4.61

23.6 = 4x

Then, divide both sides by 4

23.6/4 = 4x/4

x = 5.9

Each bag of apples cost $5.90

Answer:

X = 7

Step-by-step explanation:

E___D___F

ED = DF

6x +4 = 4x+18

6x – 4x = 18 – 4

2x = 14

x =14/2

x = 7

I hope I helped you^_^

510,000,000 million km²

Let us represent the total surface area of the earth as = x

We are told in the question that:

Water covers 70.8%, or about 3.61 × 10⁸ km², of the Earth's surface.

70.8% = 0.708

Hence,

0.708 × x = 3.61 × 10⁸

x = 3.61 × 10⁸/0.708

x = 361000000/0.708

x = 509,887,005.65km²

Therefore, the total surface are the earth approximately to the nearest million = 510,000,000 million km²

This is the number "510 million"

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

Work Shown:

The times 10⁸ means "times 100 million"

3.61 x 10⁸ = 3.61 * 100 million = 361 million

S = surface area of the earth

70.8% of S = water coverage area

70.8% of S = 361 million square km

0.708S = 361 million square km

S = (361/0.708) million square km

S = 509.887 million square km

S = 510 million square km

S = 510,000,000 square km

The mistake Matt made in calculating the distance the mouse travelled each hour was that Matt should have divided the numerator but not the denominator of 3/24 by 3

The distance the mouse travelled per hour is calculated by comparison

If the mouse covers 3/24 miles in in 3 hours then in an hour the mouse will cover

3/24 = 3

? = 1

cross multiplying

3 * ? = 1 * 3/24

? = 3/24 ÷ 3

? = 3/24 * 1/3

? = 1/24

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Answer:

D

Step-by-step explanation:

type in my calclater it's

d

Answer:

Option D will be your answer

Step-by-step explanation:

hope it helps you

have a great day

The height of the building is approximately 227 feet.

In the given question, a man wants to measure the height of a nearby building. He places a 7 ft pole in the shadow of the building so that the shadow of the pole is exactly covered by the shadow of the building.

The total length of the building's shadow is 162 ft, and the pole casts a shadow that is 5.5 ft long. We have to determine the height of the building.The given situation can be explained with the help of a diagram.

As shown in the figure above, let AB be the building and CD be the 7 ft pole. The height of the building is represented by the line segment AE, which is to be determined. Let the length of the shadow of the pole be CD and that of the building be BD.

Therefore, the length of the total shadow will be BC or CD + BD.According to the question, the shadow of the pole is exactly covered by the shadow of the building. This implies that the two triangles AEF and CDF are similar. Hence, the corresponding sides are proportional. Therefore, we have:AE/EF = CD/DF

On substituting the values from the given data, we get:

AE/(EF + 5.5) = 7/5.5.... (1)

Similarly, we can write from the given data:

BD/DF = 162/5.5.... (2)

From equations (1) and (2), we can write:

AE/(EF + 5.5) = BD/DF => AE/(EF + 5.5) = 162/5.5.... (3)

On solving the above equation for AE, we get:

AE = (7/5.5) × (162/5.5 - 5.5)≈ 226.6 ft

Therefore, the height of the building is approximately 227 feet.

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Answer:

the correct answer is \(7\sqrt{5}\)

Answer:

43

Step-by-step explanation:

hope that helps!

Answer:

I think it's A .....................

Answer:

$7.18

Step-by-step explanation:

16.50 x 0.6 = 9.9 (multiplying by percent to find the total amount off)

16.50 - 9.9 = 6.6 (subtracting the amount of money you would get off from the original price)

6.6 x 0.0875 =  0.58 (rounded) (multiplied by the tax percentage to find how much tax would cost)

6.60 + 0.58 = 7.18 (add the sale price and sales tax)

$7.18 (final answer)

Answer:

No

1/1000

Step-by-step explanation:

The place digits is .713.

The seven is the tenths.

The one is the hundredths.

The three is the thousandths.

So the three would be in the thousandths place

False, In the exponential decay function ƒ(x) = a • bx, the b is between 0 and 1.

What is exponential decay function?

In mathematics, the term "exponential decay" refers to the process of a constant percentage rate decline in a value over time.

                     It can be written as y=a(1-b)x, where y represents the final amount, a represents the initial amount, b represents the decay factor, and x is the amount of time that has passed.

How do you calculate an exponential function?

The equation f(x) = ax, in which the input variable x appears as an exponent, describes an exponential function. Both the exponential function and the value of x are dependent on the exponential curve.

                               The exponential function, which has the form, is a significant mathematical function. f(x) = ax.

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Answer:

D, g(x) = 1/4 x^2

Step-by-step explanation:

You can try plugging in the x and y values into each equation. The answer to this would be D, where if you plug in 2 as the x value, you get 1/4 * 4 which equals 1. This also makes sense because 2x would have a narrower curve while 1/2x would have a wider curve.

Answer:

what numbers do you need answering??

Step-by-step explanation:

The calculated value of the rate of the graph is 0.8

from the question, we have the following parameters that can be used in our computation:

The graph

Where, we have

(0, -16) and (20, 0)

The rate of the graph is calculated as

Rate = Change in y/x

using the above as a guide, we have the following:

Rate = (0 + 16)/(20 - 0)

Evaluate

Rate = 0.8

Hence, the rate is 0.8

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The slant height of the square base pyramid is calculated as l = 17 using the Pythagoras rule.

The Pythagoras rule states that in a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. 

we can observe the right triangle with hypotenuse l, height = 15, and base = 8 {half the pyramid base of 16}

the slant height is calculated as follows:

l² = 15² + 8²

l² = 225 + 64

l² = 289

l = √289 {take square root of both sides}

l = 17.

Therefore, the slant height of the square base pyramid is calculated as l = 17 using the Pythagoras rule.

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The ratio of the amount of money Alice has to the amount Bob has is approximately 3.36 : 1.

According to the problem, two equations can be set up:

If Alice receives n dollars from Bob, then she will have 7 times as much money as Bob. This gives us the equation:

A + n = 7(B - n)

If Alice gives n dollars to Bob, then she will have 2 times as much money as Bob. This gives us the second equation:

A - n = 2(B + n)

We can rearrange these equations to make them easier to solve:

8n = 7B - A

3n = A - 2B

Setting these equal to each other, since they are both equal to 24n, gives:

21B - 3A = 8A - 16B

37B = 11A

A / B = 37 / 11

= 3. 36

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Answer:

c) Trinomial Seeing Structure (Substitution method)

Explanation:

The initial expression is

(a + b)² - (a + b) - 6

So, if we replace (a+b) by x, we get:

x² - x - 6

Now, we can factorize it by finding two numbers that multiply to -6 and add to -1. These numbers are -3 and 2, so it is equal to

(x - 3)(x + 2)

Finally, we can replace x = a + b, so

(a + b - 3)(a + b + 2)

The expression x² - x - 6 looks like a trinomial. It means that the best method for the given expression is

c) Trinomial Seeing Structure (substitution method)

\(3d=n\)

\(10d+5n=325\)

\(10d+15d=325\)

\(25d=325\)

\(d=13\)

\(n=39\)

Hope this helps.

頑張って!

The length of the side of the square is 4√2 miles

From the question, we have the following parameters that can be used in our computation:

Diagonal = 8 miles

The relationship between the side length of a square and its diagonal is

Diagonal = Side√2

Substitute the known values in the above equation, so, we have the following representation

Side√2 = 8

Divide both sides by √2

Side = 8/√2

Evaluate

Side = 4√2

Hence, the side length is 4√2 miles

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Answer:

direction

shape

scatter plots

shape and outliers

Step-by-step explanation:

Correlation is defined as the degree of correspondence between two variables.

When the values increase together, correlation is positive and when one value decreases as the other increases, correlation is negative .

Calculating a correlation can help describe a relation between two quantitative variables' direction and shape. However, it is not sufficient to use a correlation coefficient to describe two variables.  The addition of scatter plots can provide other helpful details such as shape and outliers

SOLUTION

The principle behind the Exterior Angle Theorem is that:

the sum of two interior angles is equal to one exterior angle.

In this question, we have that :

X + ( X - 48 ) = X + 50

Collecting like terms, we have that:

2 X - 48 = X + 50

2X - X = 50 + 48

X = 98 Degrees.

CONCLUSION: The value of X = 98 Degrees.

Answer:

x < 40

Step-by-step explanation:

x/5-3<5

=5×x/5 -3×5 < 5×5

=x - 15 < 25

NOTE 5 will cancel 5 living x.

=x < 25 + 15

x < 40.

Therefore x is 40.

At a temperature of 20°C, the mouse would burn approximately 1,567.44 calories each day.

According to the given model C = 0.37219T + 1,560, where C represents the number of calories an idle mouse burns each day and T represents the temperature of its environment in °C.

To find the most comfortable temperature for an idle mouse, we need to determine the temperature at which the mouse burns the least amount of calories per day.

To find this temperature, we can minimize the equation C = 0.37219T + 1,560. To do so, we take the derivative of C with respect to T and set it equal to zero:

dC/dT = 0.37219 = 0

Solving this equation, we find that the derivative is a constant value, indicating that the function C = 0.37219T + 1,560 is a linear equation with a slope of 0.37219. This means that the mouse burns the least calories at any temperature, as the slope is positive.

Therefore, there is no specific "most comfortable" temperature for an idle mouse in terms of minimizing calorie burn. However, if we consider the range of temperatures mice typically encounter, we can find a temperature where the calorie burn is relatively low.

For example, if we take a temperature of 20°C, we can calculate the calorie burn:

C = 0.37219 * 20 + 1,560

C = 7.4438 + 1,560

C ≈ 1,567.4438 calories per day

Therefore, at a temperature of 20°C, the mouse would burn approximately 1,567.44 calories each day.

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Answer:

The Z-statistic value is

                  Z = -2.33

Step-by-step explanation:

Step(i):-

Random sample size     'n' = 64

mean of the sample  'x⁻ ' = 8.93 volts

standard deviation of the sample  = 0.2 volts

mean of the Population"μ" = 9 volts

Step(ii):-

Z -statistic

             \(Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }\)

             \(Z = \frac{8.93 -9}{\frac{0.2}{\sqrt{64} } } = -2.33\)

Conclusion:-

The Z-statistic value is  = -2.33

Answer:

answer is in the img below

Step-by-step explanation:

brainliest plzzz

Answer:

A) x= -7 or x = 6

Step-by-step explanation:

e2021

Answer:

the product of the decimal equivalents of all discount in the series

Answer:

26.92%

Answer choice “A”

Explanation:

14 cards of hearts in a deck out of 52.

14/52 = 26.92%

The probability of drawing a heart card from a full deck of cards is 26.92%

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.

Probability(Event) = Favorable Outcomes/Total Outcomes = x/n

Experiment: A trial or an operation conducted to produce an outcome is called an experiment.

Sample Space: All the possible outcomes of an experiment together constitute a sample space. For example, the sample space of tossing a coin is head and tail.

Favorable Outcome: An event that has produced the desired result or expected event is called a favorable outcome. For example, when we roll two dice, the possible/favorable outcomes of getting the sum of numbers on the two dice as 4 are (1,3), (2,2), and (3,1).

Trial: A trial denotes doing a random experiment.

As, we know there we have 14 cards of hearts in a deck out of 52.

So,

probability of drawing a heart card from a full deck of cards

=14/52

= 26.92%

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Answer:

5pls give brainiest

Step-by-step explanation:

10=2x

10/2=5