Please help. I don't understand this.​

Answer:

306 m

Step-by-step explanation:

distance between her house and the third point:

280 - 10 = 270 m

distance between the third point  and the beach:

164 - 20 = 144 m

We have a right triangle ,then we can apply the Pythagorean theorem:

\(\text{the distance between her house and the beach} =\sqrt{\left( 270\right)^{2} +\left( 144\right)^{2} } = 306\ m\)

Answer

50 gallons of water

Step-by-step explanation:

for every 2 gallons of water there is 1 quart of ice

268 divided by 134 equals 2 which means 134 x 2 = 268

meaning 1 quart of ice = 2 gallons of water

then i multiply 25 by 2 which equals 50 meaning 25 quarts of ice is keeping 50 gallons of water cold

ANSWERS

1. Domain: all real values

2. Zeros: 0 (with multiplicity 2) and 3

3. Not periodic. Symmetric about the point (1, 2)

4. Positive for x < 3; negative for x > 3

5. f → ∞ as x → -∞; f → -∞ as x → ∞

6. none

EXPLANATION

1. The domain of a function is the set of all the x-values for which the function exists. In this case, we have a polynomial function and, therefore, the domain is all real values.

2. To find the zeros of the function, we have to solve,

First, factor x² and -1 out. To do so, we have to divide each term by x² and by -1 - or, in other words, divide by -x²,

So, we have,

In this equation, we can see that if x = 0, then the equation is true. Also, if x = 3 the equation is true. So, these are the two zeros, with the particularity that x = 0 has multiplicity 2. This is because the factor related to that zero is x squared.

Hence, the zeros are 0 and 3. 0 has multiplicity 2.

3. As mentioned before, this is a polynomial function, which means that it is not a periodic function. A cubic function is an odd function, and it is symmetric about the origin. However, this function is not the parent function, x³, but it is symmetric about the point (1, 2).

4. We know that the function is zero at x = 0 and at x = 3. For x < 0, the function is positive,

For 0 < x < 3, the function is also positive. This is because x = 0 with multiplicity 2.

Then, since the function crosses the x-axis at x = 3 and that zero has multiplicity 1, we can conclude that the function is negative for x > 3.

Hence, is the function is positive for x < 3 and negative for x > 3.

5. As mentioned in part 4, the function is positive for all values of x less than 3, which means that the function goes to infinity as x goes to negative infinity.

Since for x > 3 the function is always negative, it goes to negative infinity as x goes to infinity.

6. A polynomial function has no restrictions in the domain and, therefore, has no asymptotes.

Answer:

x = 30°

Step-by-step explanation:

All three angles of a triangle must add up to 180°.

53 + 97 + x = 180

150 + x = 180

x = 30

I hope this was helpful to you. If it was, please feel free to rate and give thanks to this answer. Have a beautiful day!

Answer:

2d

Step-by-step explanation:

Since Pete has double what Leo has, we need to multiply Leo's number of stamps by 2. But because we don't know how many he actually has, and the amount is represented by "d", we multiple "d" by 2

Answer:

Step-by-step explanation:

The difference is

Pete had d more stamps than Leo

Answer:6

Step-by-step explanation:

4(2)^4 − 2(7)^2 + 40

4(16)-2(7)^2+40

64-2(49)+40

64-98+40

-34+40

6

Answer:

6

Step-by-step explanation:

4a^4 - 2b^2 + 40

Put a = 2 and b = 7

4(2)^4 - 2(7)^2 + 40

Solve the powers first.

4(16) - 2(49) + 40

Multiply.

64 - 98 + 40

Add and subtract.

= 6

Answer:

120 feet

Step-by-step explanation:

1 unit = 60 ft thus 2 Units = 120 ft

Answer:

B

Step-by-step explanation:

It passes the vertical line test. Going up and down it doesn't touch the line at two separate points at any time.

The expression for f'(x) is f'(4) = 28.

To find the derivative of f(x), we need to use the power rule of differentiation. According to this rule, if \(f(x) = ax^n\), then\(f'(x) = anx^(n-1)\). Applying this rule to f(x) = 3x^2 + 4x + 3, we get:

\(f'(x) = 6x + 4\)

To find f'(4), we just need to substitute x = 4 in the expression for f'(x):

\(f'(4) = 6(4) + 4 = 28\)

Therefore, f'(4) = 28.

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Answer:Yes

Step-by-step explanation:

Carmela:3/4/3=1/4 per mile

Hari:1/2/2=1/4 per mile

Answer:

I think it's  13. The side that is equal to 13 is also equal to x.

Answer:

sorry I don't know the answer

Answer:

a) 7540

b) 43.39

Step-by-step explanation:

a)

\(\frac{245*20^2}{13} =\\\\\frac{245*400}{13}=\\\\\frac{98000}{13}=\\\\7540\)

(to the nearest 10.)

b)

\(\sqrt{58-29}+38=\\\sqrt{29}+38=\\5.39+38=\\43.39\\or\\43.38\)

(to the nearest hundredth)

43.38 is rounding down, 43.39 is rounding up. (43.385)

Answer:

y= -4

Step-by-step explanation:

x+y=42.   We know that x plus y equals 42.

x=2y .   We also know that x equals twice y.

2y+y=42.   Since we know that x=2y, we're going to replace x with 2y from the original equation, simplified would be 3y=42.

y=14.   3y=42 simplified is y=14, this is because we divided both sides by 3 (since 3 and 42 are both divisible by 3) (btw divisible by 3 simply means that it can be divided by 3)

x+14=42.   Now that we know what y equals, let's replace y with 14 from the original equation.

x=28.  Now that we know that x=28 and y=14, we know that y is always x/2.

When x=-8, we divide it by 2 and get, -4.

Not absolutely positive as this was all mental math, but hope this helps! :)

The value of the variable y at x = -8, will be negative 49.

A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.

The numbers x and y are inversely proportional. Then we have

y ∝ 1/x

y = k/x    ...1

When the sum of x and y is 42. Then the equation will be

x + y = 42   ...2

x is twice y. Then the equation will be

x = 2y   ...3

From equations 2 and 3, we have

2y + y = 42

3y = 42

y = 14

Then the value of x will be

x = 2(14)

x = 28

Then the value of k will be

14 = k / 28

k = 392

Then the equation will be

y = 392 / x

Then the value of the variable y at x = -8, will be

y = 392 / (-8)

y = -49

Thus, the value of the variable y at x = -8, will be negative 49.

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Rounding decimals on a calculator is a useful skill for solving math problems that involve estimation. Rounding involves reducing the precision of a number to a specified number of decimal places.

To round a decimal on a calculator, follow these steps:

Enter the decimal you want to round on your calculator.

Find the decimal place to which you want to round.

If the next decimal place to the right of the specified decimal place is less than 5, keep the digits in the specified decimal place and all the decimal places to its left unchanged.

For example,

if you want to round the decimal 2.746 to the nearest hundredth, you would look at the third decimal place, which is 4. Since 4 is less than 5, you would round down and keep the number 2.74.

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Step-by-step explanation:

127? I hope this is right!

Answer:

Thank you <3

about 15 thanks on your profile

Step-by-step explanation:

112 questions

127 thanks total

Average of 1 thank on each questions

that means 112 questions have 1 thank each

So 112 thanks

subtract the total thanks from the question thanks

127 - 112

15

You have received around 15 thanks on your profile, as its an average of 1 thank on each question which means it could always be more or less.

The solution for x is 621.5424 M \(s^{-1}\), with units of molar per second (M \(s^{-1}\)).

To solve for x in the equation x = (6.4×10^3 M^(-2) s^(-1))(0.46M)^3, we can simplify the expression and calculate the result. Let's break it down step by step: x = (6.4×10^3 M^(-2) s^(-1))(0.46M)^3

First, let's simplify (0.46M)^3: (0.46M)^3 = (0.46^3)(M^3) = 0.097336M^3

Now, substitute this back into the equation:

x = (6.4×10^3 M^(-2) s^(-1))(0.097336M^3)

Next, multiply the terms: x = 6.4×10^3 × 0.097336 M^(-2) s^(-1) M^3

When multiplying the terms with the same base, we add the exponents:

x = 6.4×10^3 × 0.097336 M^(-2 + 3) s^(-1)

Simplifying the exponent: x = 6.4×10^3 × 0.097336 M^(1) s^(-1)

Now, multiply the numerical values: x = 621.5424 M s^(-1)

Therefore, the solution for x is 621.5424 M s^(-1), with units of molar per second (M s^(-1)).

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The sample space in the tree diagram regarding the probability will be HR, HY, HB, TR, TY, TB.

It should be noted that probability simply means the likelihood of the occurence of an event.

In this case, the sample space in the tree diagram will be HR, HY, HB, TR, TY, TB where,

H= head

T = tail

B = blue

r = red

y = yellow

The number of outcomes are in the event "Toss a tails, spin yellow will be 1.

The probability of tossing tails and spinning yellow will be:

= 1/2 × 1/3

= 1/6

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The correct roots of the equation are (a) 9 and 1

From the complete question, their mistakes are:

Anu

Aji

A quadratic equation is represented as:

\(ax^2 + bx + c = 0\)

Where:

\(\alpha\beta = \frac ca\) --- product of roots

\(\alpha + \beta = -\frac ba\) --- sum of roots

Anu made a mistake in the constant term, so we consider the sum of roots

\(Sum = 8 + 2\)

\(Sum = 10\)

Aji made a mistake in the coefficient, so we consider the product of roots

\(Product = -9 \times -1\)

\(Product = 9\)

The possible equations from the above sum and products are:

Of all the above equations, the most likely equation is \(x^2 - 10x + 9 =0\), and it has a root of 9 and 1

Hence, the correct roots are (a) 9 and 1

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Answer:

Step-by-step explanation:

9)

60/40 =                             divide both side by 10

6/4 =                                  divide both side by 2

3/2

10)

28/63 =                            divide both side by 7

4/9

11)

45/120 =                             divide both side by 15      

3/8          

Infinitely many solutions is for equal lines, no solutions is for parallel lines, and one solution is for intersecting lines.

I assume you are asking about systems of linear equations. Where the general system of linear equations is:

y = a*x + b

y = c*x + d

There are 3 possible options for these.

"Infinitely many solutions"

This happens when both equations describe the same line, so if a = c and b = d, then there are infinite solutions.

"no solutions"

This happens when the lines are parallel lines, this happens if both lines have the same slope and different y-intercept. So this happens when a = c and b ≠ d.

"One solution"

This happens when the lines intersect at one point. The only requirement is that the slopes must be different, so a ≠ c.

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Answer:

a) 2.5 x 10^5

b) 8.1 x 10^4

c) 9.06 x 10^8

d) 1.034 x 10^10

Answer:

k = 14

hope it's helpful ❤❤❤❤❤

THANK YOU.

I believe it is 11/5

Hopefully it's right anyways gl

The increase in auxin resulting from directional blue light stimulus leads to the expansion of shoot elongation zone membranes.

When plants are exposed to directional blue light, it triggers a series of physiological responses, including the elongation of shoot tissues. One of the key mechanisms behind this response involves the hormone auxin. Auxin is a plant hormone that plays a crucial role in various aspects of plant growth and development. In the presence of directional blue light, the levels of auxin in the shoot elongation zone increase.

The shoot elongation zone is a region in the plant stem where cell division and elongation take place, contributing to the upward growth of the plant. Membranes within this zone are responsible for the transport of various substances, including auxin. When the concentration of auxin increases due to the directional blue light stimulus, it promotes the expansion of shoot elongation zone membranes.

The increased auxin concentration triggers a cascade of molecular events, leading to cell elongation and the loosening of cell walls in the shoot elongation zone. This expansion of the membranes allows for the uptake of water and other nutrients, facilitating the elongation of shoot tissues. Consequently, the plant exhibits directional growth towards the source of the blue light stimulus.

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The value of the piecewise function for f(3) is 4

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

f(x) = 2x if x < 1

f(x) = 1/2x + 5/2 if x >= 1

The function f(3) implies that we make use of the function

f(x) = 1/2x + 5/2

This is because it is valid for x >= 1

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

f(3) = 1/2 * 3 + 5/2

Evaluate

f(3) = 4

Hence, the piecewise function for f(3) is 4

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Answer: i got 0 i dunno if my math wrong sorry if wrong

Step-by-step explanation:

Answer:

- 0.12!

Step-by-step explanation:

hope this helps i worked it out l, so if its wrong please tell me! ㋛︎

Answer:

the number of children = 156

the number of adults = 183

Step-by-step explanation:

let x be the number of children

    y be the number of adults

We have to solve this system:

\(\begin{cases}x+y=339&\\ 1.75x + 2.50y = 730.50&\end{cases}\)

\(\Longleftrightarrow \begin{cases}y=339-x&\\ 1.75x + 2.50(339-x) = 730.50&\end{cases}\)

\(\Longleftrightarrow \begin{cases}y=339-x&\\ -0.75x + 847.5 = 730.50&\end{cases}\)

\(\Longleftrightarrow \begin{cases}y=339-x&\\ -0.75x =-117&\end{cases}\)

\(\Longleftrightarrow \begin{cases}y=339-156=183&\\ x =156&\end{cases}\)