Can someone please help me? ​

Answer:

The answer is A. 10b = c

Step-by-step explanation:

Well if it's $10 per book and the total cost is C. Then you would multiply the amount of books with the cost per book and have it equal the the total C.

Answer:

-528/25

Step-by-step explanation:

The curve with parametric equations x = \(e^{- t}\) + t, y = \(e^t\) − t, − 2 ≤ t ≤ 2 can be plotted on a graph. The arrow shows the direction where t increases in the interval (-2,2).

The length of a curve of the provided parametric equations is indicated by the arrow pointing in the direction wherein the curve is traced given data.

Think about the equations for the parameterized curve in the x-y plane.

x = x( t )

y = y( t )

where the argument is t. The graph of the curve is created by charting the series of points as the variable t changes (x,y).

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The question is -

Select the curve generated by the parametric equations. Indicate with an arrow the direction in which the curve is traced as t increases. x = \(e^{- t}\) + t , y = \(e^t\) − t , − 2 ≤ t ≤ 2

x = 1

\(2x + \dfrac{1}{4} = \dfrac{1}{4}x + 2\)

1. subtract (1/4)x from both sides

\(\dfrac{7}{4}x + \dfrac{1}{4} = 2\)

2. subtract 1/4 from both sides

\(\dfrac{7}{4}x = \dfrac{7}{4}\)

3. multiply both sides by the reciprocal of x's coefficient

The reciprocal of \(\frac{\bold{7}}{\bold{4}}\) is \(\frac{\bold{4}}{\bold{7}}\).

\(\left(\dfrac{\not4}{\not7}\right)\left(\dfrac{\not7}{\not4}x\right) = \left(\dfrac{\not7}{\not4}\right)\left(\dfrac{\not4}{\not7}\right)\)

\(\boxed{x = 1}\)

Answer:

c =2.5

Step-by-step explanation

1.5×1.5=2.25

2×2=4

4+2.25=6.25

√6.25=2.5

c=2.5

Therefore, after using three-fourths of the rice in the box, 4 and 1/4 cups of rice remained.

To find the number of cups of rice that remained in the box, we need to calculate three-fourths (3/4) of the total amount of rice in the box.

The total amount of rice in the box is given as five and two-thirds cups. To work with a fraction, we can convert the mixed number to an improper fraction:

5 and 2/3 = (5 * 3 + 2) / 3 = 17/3 cups

Now, we can find three-fourths (3/4) of 17/3:

(3/4) * (17/3) = (3 * 17) / (4 * 3) = 51/12 = 4 and 3/12 = 4 and 1/4 cups

Therefore, after using three-fourths of the rice in the box, 4 and 1/4 cups of rice remained.

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1.

The exact degree measure for angle a) is 60°.

The exact degree measure for angle b) is 72°

The exact degree measure for angle c) is 15°.

2.

The exact radian measure for angle a) is π/36.

The exact radian measure for angle b) is π/9.

The exact radian measure for angle c) is 2π/3.

1.
a) To convert from radians to degrees, we use the formula:
degree measure = radian measure x (180/π)

So, for angle a) π/3, we have:
degree measure = (π/3) x (180/π) = 60°


For angle b) 2π/5, we have:
degree measure = (2π/5) x (180/π) = 72°


For angle c) π/12, we have:
degree measure = (π/12) x (180/π) = 15°


2.
a) To convert from degrees to radians, we use the formula:
radian measure = degree measure x (π/180)

So, for angle a) 35°, we have:
radian measure = 35 x (π/180) = π/36


For angle b) 20°, we have:
radian measure = 20 x (π/180) = π/9


For angle c) 120°, we have:
radian measure = 120 x (π/180) = 2π/3
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Answer:

1/ 8 ^2

Step-by-step explanation:

When we are dividing exponents with same base all we do is subtract the denominator by the numerator (the exponent)

In this scenario we have  8^3 / 8^5

We are saying 8 * 8 * 8 / 8 * 8 * 8 * 8 * 8   When we cancel out the 8's were left with 1 / 8^2

or we could just subtract if that method is too long

Answer: what do you mean by part C

Step-by-step explanation:

The expressions which demonstrates the identity property of multiplication is; 25(1) = 25 option B

Identity Property of Multiplication states that any number multiplied by 1 does not change, that is, it is constant or remains the same

Check all options

25(0) = 25

0 = 25

Not true

25(1) = 25

25 = 25

True (identity property of multiplication holds)

25 + 0 = 25

25 = 25

True (Not identity property of multiplication)

25 + 1 = 25

26 = 25

Not true

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Answer:

5x+4

Step-by-step explanation:

Answer:

Step-by-step explanation:

It could be 32m. Maybe, I'm not positive though.

Answer:

Hope you like the answer

Step-by-step explanation:

Mark me as Brilliant if you like the answer

Answer:

15% off

Step-by-step explanation:

You take your 975 and divide it

Answer:

The percentage markdown is 15 % .

Answer:

24 inches

Step-by-step explanation:

2 x 12 = 24

Mean of rt = 0.02,

Variance of rt = 0.02,

Lag-1 Autocorrelation (ρ1) = -0.01,

Lag-2 Autocorrelation (ρ2) = Unknown,

1-step ahead forecast = -0.005,

2-step ahead forecast = 0.02,

The standard deviation of forecast errors = √0.02.

We have,

To find the mean and variance of the return series, we can substitute the given model into the equation and calculate:

Mean of rt:

E(rt) = E(0.02 + 0.5rt-2 + et)

= 0.02 + 0.5E(rt-2) + E(et)

= 0.02 + 0.5 * 0 + 0

= 0.02

The variance of rt:

Var(rt) = Var(0.02 + 0.5rt-2 + et)

= Var(et) (since the term 0.5rt-2 does not contribute to the variance)

= 0.02

The mean of the return series rt is 0.02, and the variance is 0.02.

To compute the lag-1 and lag-2 autocorrelations of rt, we need to determine the correlation between rt and rt-1, and between rt and rt-2:

Lag-1 Autocorrelation:

ρ(1) = Cov(rt, rt-1) / (σ(rt) * σ(rt-1))

Lag-2 Autocorrelation:

ρ(2) = Cov(rt, rt-2) / (σ(rt) * σ(rt-2))

Since we are given r100 = -0.01 and r99 = 0.02, we can substitute these values into the equations:

Lag-1 Autocorrelation:

ρ(1) = Cov(rt, rt-1) / (σ(rt) * σ(rt-1))

= Cov(r100, r99) / (σ(r100) * σ(r99))

= Cov(-0.01, 0.02) / (σ(r100) * σ(r99))

Lag-2 Autocorrelation:

ρ(2) = Cov(rt, rt-2) / (σ(rt) * σ(rt-2))

= Cov(r100, r98) / (σ(r100) * σ(r98))

To compute the 1- and 2-step-ahead forecasts of the return series at

t = 100, we use the given model:

1-step ahead forecast:

E(rt+1 | r100, r99) = E(0.02 + 0.5rt-1 + et+1 | r100, r99)

= 0.02 + 0.5r100

2-step ahead forecast:

E(rt+2 | r100, r99) = E(0.02 + 0.5rt | r100, r99)

= 0.02 + 0.5E(rt | r100, r99)

= 0.02 + 0.5(0.02 + 0.5r100)

The associated standard deviation of the forecast errors can be calculated as the square root of the variance of the return series, which is given as 0.02.

Thus,

Mean of rt = 0.02,

Variance of rt = 0.02,

Lag-1 Autocorrelation (ρ1) = -0.01,

Lag-2 Autocorrelation (ρ2) = Unknown,

1-step ahead forecast = -0.005,

2-step ahead forecast = 0.02,

The standard deviation of forecast errors = √0.02.

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Answer:

\(\huge\boxed{\sf x = -100}\)

Step-by-step explanation:

\(\displaystyle -\frac{x}{5} -8=12\\\\Add \ 8 \ to \ both \ sides\\\\-\frac{x}{5} = 12+ 8\\\\-\frac{x}{5} = 20\\\\Multiply \ both\ sides \ by \ 5\\\\-x = 20 \times 5\\\\-x = 100\\\\Multiply\ both \ sides \ by\ -1\\\\x = -100\\\\\rule[225]{225}{2}\)

The required function when the parent function is stretched comes to be \(f(x)=x^{3} +4\).

The parent function is:

\(f(x)=x^3\)

If a function f(x) is vertically translated by k units f(x) becomes f(x)+k where k is positive.

Given function \(f(x)=x^3\) is vertically shifted by 4 units

So, f(x) will become f(x)+4

\(f(x)+4 = x^{3} +4\)

So, the required function is \(f(x)=x^{3} +4\)

Therefore, the required function when the parent function is stretched comes to be \(f(x)=x^{3} +4\).

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Answer:

A

Step-by-step explanation:

edge, 2022

Answer:

(9,-7)

Step-by-step explanation:

Answer:

9, -7 if i'm correct

Step-by-step explanation:

The rate of constant for the above-given first-order reaction is b.) 8.77 × 10–3 h–1.

The half-life of a first-order reaction can be calculated using the equation t1/2 = ln(2)/k, where t1/2 is the half-life and k is the rate constant.

In this case, we know that the reaction goes to half completion in 79 hours. Therefore, the half-life is also 79 hours.

Plugging this into the equation, we get:

79 = ln(2)/k

Solving for k, we get:

k = ln(2)/79

Using a calculator, we can evaluate this expression to get:

k = 8.77 × 10–3 h–1

Therefore, the correct answer is b) 8.77 × 10–3 h–1.

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Step-by-step explanation:

Nearest thousandth is the third digit after the decimal point.

Or in other words :writing this number till reaching the third digit after the point (3rd digit in decimal part)

48.175

19.926

5.572

Hope this helps you.. Good Luck!

Answer: The triangle inequality states that each side of a triangle must be shorter than the sum of 2 other sides.

Step-by-step explanation: Please make me Brainliest.

Answer:

33 R 19.8

1.6 goes into 52.8, 33 times, so write 33 while including the tens place.

↓ Subtract 52.8 by 33. ↓

\(52.8-33=19.8\)

Therefore, the answer is 33.

Answer: 8y -3

Step-by-step explanation:

3(2y -1) + 2y

6y -3 + 2y

8y -3

Answer:

8 y - 3

Step-by-step explanation - I got it from google so its right 100%

Answer:

(a) r = -0.947928522

(b) strong, negative

Step-by-step explanation:

The Product Moment Correlation Coefficient (r) measures the strength of the linear correlation between two variables.

The PMCC is always between +1 and -1.

The closer the value of r is to +1 or -1, the stronger the correlation between the two variables.

Inputting the data from the table into a calculator and using the statistical function:

r = -0.947928522

As the value of r is close to -1, the best description for the correlation would be strong, negative

Explanation

The unit rate os obtained as shown as follows:

Answer is A. The unit rate is equal to $17.

Answer:

I’m pretty sure it’s Triangle ABC is congruent to Triangle DEF.

Step-by-step explanation:

If you rotate Triangle DEF to where the 90 degree angle is on the bottom right, you can the compare the two triangles. You can divide 300/25, 240/20, and 180/15. They all result in 12 meaning they are congruent and similar in that way. (I’m only 90% this is right btw)

Answer:

b

Step-by-step explanation:

writing two equations for length and width of rectangle : L + W + L + W = 200 ft  ⇒(L + W) = 100 ft .........(1)

Area of the rectangular garden is given by: A = L x W=1275 = L x W⇒L = 1275/W .......(2). Substituting L = 1275/W in equation (1) :(1275/W) + W = 100 ft, W² + 1275/W - 100 = 0 . Multiplying throughout by W²: W⁴ + 1275W² - 100W² = 0W⁴ + 1175W² = 0W²(W² + 1175) = 0 , W = 0 (Rejected) or W = √1175 W = 34.26 ft (Approximately), Putting the value of W in (1), we get: L = 1275/34.26 ≈ 37.20 ft.

Therefore, the length (larger dimension) of the garden is approximately 37.20ft, while the width (smaller dimension) is approximately 34.26ft.

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The volume of the solid is (a⁴ π)/2. The given paraboloid of revolution is x² + y² = az, the xy-plane and the cylinder is x² + y² = 2ax.

Therefore, the solid can be bounded by curves in polar coordinates, the volume of the bounded solid can be expressed asV = ∫(0 to 2π)∫(0 to a)∫(r²/a to 2r cos θ) r dz dr dθ, where r² = x² + y² and r cos θ = x.

So, the limits of integration are: 0 ≤ r ≤ a, 0 ≤ θ ≤ 2π and r²/a ≤ z ≤ 2r cos θ.

Volume of the solid can be given as,

V = ∫(0 to 2π)∫(0 to a)∫(r²/a to 2r cos θ) r dz dr dθ= ∫(0 to 2π) ∫(0 to a) [r² cos θ] | r²/a to 2r cos θ | dr dθ=∫(0 to 2π) ∫(0 to a) (2r³ cos θ)/a - r³ dr dθ= ∫(0 to 2π) [(a⁴ cos θ)/4 - (a⁴ cos³ θ)/24] dθ= [(a⁴)/4] ∫(0 to 2π) [cos θ - (cos³ θ)/6] dθ= [(a⁴)/4] [(sin θ + sin³ θ/3)/3] from 0 to 2π= (a⁴ π)/2.

Hence, the volume of the solid is (a⁴ π)/2.

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