Someone help me with these 3 problems!!!! Due tomorrow!!!

Answer:

7

Step-by-step explanation:

Using the exact values for

cos45° = \(\frac{1}{\sqrt{2} }\) and tan60° = \(\sqrt{3}\) , then

2(cos²45° + tan²60°)

= 2( (\(\frac{1}{\sqrt{2} }\) )² + (\(\sqrt{3}\) )² )

= 2( \(\frac{1}{2}\) + 3 )  ← distribute

= 1 + 6

= 7

Answer:

5

Step-by-step explanation:

Slope is number by X

Answer:

125℅

Step-by-step explanation:

40/32 x 100℅=125℅

Answer:

x = 103/13

Step-by-step explanation:

Answer:

Rotation

Step-by-step explanation:

Rotation is where you rotate a figure about a point on a graph. Reflection would essentially mirror a figure across and axis, translation would move a figure, and dilation woukd change the size of the figure.

Answer:

9 scoops

Step-by-step explanation:

3 scoops = 45g

3/45 scoops = 1g

3/45*135 scoops = 135g = 9 scoops

Answer:

Step-by-step explanation:

ima a braintlest

Answer:

20%

Step-by-step explanation:

The formula to find percent error is the absolute value of the actual value (60) minus the approximate value (48) divided by the actual value (60) times 100. So first we calculate 60 - 48 which is 12 then divide 12 by 60 which gives us 0.2 and finally multiply by 100 which gives us the answer of 20%

Answer:

if -5n+7<57, then n>-10.

if 6n+2<8, then n<1.

Step-by-step explanation:

-5n+7<57

1. subtract 7 from both sides:

-5n+7 -7< 57 -7

-5n<50

2. divide both sides by -5 (remember to flip the sign whenever you divide by a negative number):

-5n ÷-5<50 ÷-5

n>-10

6n+2<8

1. subtract 2 from both sides:

6n+2 -2<8 -2

6n<6

2. divide both sides by 6:

6n ÷6<6 ÷6

n<1

Answer:

\({ \tt{f(x) = 2}} \\ when \: y = 2 \\ { \bf{x = - 0.5}}\)

Answer:

the answer is B.  The inverse f the given statement is

"If a polygon is not a Pentagon, then it does not have five sides".

Step-by-step explanation:

Answer:

We cant help with this question

Step-by-step explanation:

there is no picture for reference

Answer: 1 13/30 hrs left

Step-by-step explanation:

his class lasts 2 5/6 hrs...and he has already been in there for 1 2/5 hr

so the time he has left can be found by subtracting the time he has been there from the total time of the class

2 5/6 - 1 2/5....

(2 - 1) = 1 : (5/6 - 2/5 = 25/30 - 12/30 = 13/30)

so he has 1 13/30 hrs left

Answer:

13/30 hours

Step-by-step explanation:

11/6 - 7/5 = 55/30 - 42/30 = 13/30

Answer: 30

Step-by-step explanation:

The slope of a beer's law plot represents that one can quantitatively determine the molar absorptivity of a substance, which is essential for accurately determining concentrations of unknown samples using spectrophotometric methods.

In Beer's law, the relationship between the concentration of a substance and its absorbance is described by the equation A = εbc, where A is the absorbance, ε is the molar absorptivity (also known as the molar absorptivity coefficient), b is the path length of the sample, and c is the concentration of the substance.

When plotting a graph of absorbance versus concentration, the slope of the line represents the molar absorptivity (ε). The molar absorptivity is a constant that reflects the substance's ability to absorb light at a specific wavelength. A higher molar absorptivity indicates that the substance has a greater tendency to absorb light and is more sensitive to changes in concentration.

Conversely, a lower molar absorptivity indicates weaker absorption characteristics.

In summary, by measuring the slope of the Beer's law plot, one can quantitatively determine the molar absorptivity of a substance.

To know more about Beer's law, refer here:

https://brainly.com/question/30762062#

#SPJ11

Answer:

< 5 + < 6 = 180°

Step-by-step explanation:

The sum of angles 5 and 6 are 180° because they are adjacent supplementary angles--they have a common arm and a common vertex. The adjacent supplementary angles share the common line segment and vertex with each other. Two angles are also supplementary, if one of its angles is an acute angle and another angle is an obtuse angle. These characteristics match the given figure.

Therefore, < 5 and < 6 are supplementary angles, and have a sum of 180°.

Please mark my answers as the Brainliest if my explanations were helpful :)

The present value of the loan is found to be  approximately $70.28.

To find the present value of a loan, we can use the formula:

Present Value = Future Value / (1 + (interest rate * time))

Given that the future value is $1,321.17, the interest rate is 7.75%, and the time is 230 days, we can plug in these values into the formula:

Present Value = 1321.17 / (1 + (0.0775 * 230))

Calculating the expression in the parentheses first:

Present Value = 1321.17 / (1 + 17.8075)

Simplifying further:

Present Value = 1321.17 / 18.8075

Evaluating the division:

Present Value ≈ $70.28

Therefore, the present value of the loan is approximately $70.28.

Know more about the present value

https://brainly.com/question/30390056

#SPJ11

The volume enclosed by the two curves when revolved about the x-axis is \(\(\frac{6\pi}{5} \ln 3 - \frac{3\pi}{2} \cdot 3^{\frac{4}{5}}\).\) To find the volume when the area enclosed by the graphs of \(\(y = x^2\)\)and \(\(y = \frac{3}{x^3}\)\) is revolved about the x-axis, we can use the method of cylindrical shells.

First, let's find the points of intersection between the two curves by setting them equal to each other:

\(\[x^2 = \frac{3}{x^3}\]\)

To simplify this equation, we can multiply both sides by \(\(x^3\)\):

\(\[x^5 = 3\]\)

Now, taking the fifth root of both sides:

\(\[x = \sqrt[5]{3}\]\)

So the two curves intersect at \(\(x = \sqrt[5]{3}\)\).

To calculate the volume area enclosed by the graphs of \(\(y = x^2\)\)and \(\(y = \frac{3}{x^3}\)\) is revolved about the x-axis, we need to integrate the circumference of each cylindrical shell multiplied by its height. The height of each shell is the difference in the y-values of the two curves, and the circumference is\(\(2\pi x\)\).

Let's integrate from \(\(x = 0\)\) to \(\(x = \sqrt[5]{3}\)\):

\(\[V = \int_0^{\sqrt[5]{3}} 2\pi x \left(\frac{3}{x^3} - x^2\right) \, dx\]\)

Simplifying this expression:

\(\[V = 2\pi \int_0^{\sqrt[5]{3}} \left(\frac{3}{x} - x^3\right) \, dx\]\)

Integrating each term separately:

\(\[V = 2\pi \left[3 \ln|x| - \frac{x^4}{4}\right]_0^{\sqrt[5]{3}}\]\)

Plugging in the limits of integration:

\(\[V = 2\pi \left[3 \ln|\sqrt[5]{3}| - \frac{\sqrt[5]{3}^4}{4}\right] - 2\pi \left[3 \ln|0| - \frac{0^4}{4}\right]\]\)

Since \(\(\ln|0|\)\)is undefined, the second term on the right side is zero:

\(\[V = 2\pi \left[3 \ln|\sqrt[5]{3}| - \frac{\sqrt[5]{3}^4}{4}\right]\]\)

Simplifying further:

\(\[V = 2\pi \left[3 \ln 3^{\frac{1}{5}} - \frac{3}{4} \cdot 3^{\frac{4}{5}}\right]\]\)

Using the properties of logarithms, we can simplify the first term:

\(\[V = 2\pi \left[3 \cdot \frac{1}{5} \ln 3 - \frac{3}{4} \cdot 3^{\frac{4}{5}}\right]\]\)

\(\[V = \frac{6\pi}{5} \ln 3 - \frac{3\pi}{2} \cdot 3^{\frac{4}{5}}\]\)

So the volume enclosed by the two curves when revolved about the x-axis is \(\(\frac{6\pi}{5} \ln 3 - \frac{3\pi}{2} \cdot 3^{\frac{4}{5}}\).\)

Learn more about area here: https://brainly.com/question/16151549

#SPJ11

This is the standard form equation of the circle is \((x - 7)^{2}\) + \((y - 14)^{2}\) = 10

The standard form equation of a circle is \((x - h)^{2}\) + \((y - k)^{2}\) = \(r^{2}\), where (h, k) is the center of the circle and r is the radius.

Given the center of the circle as (7, 14) and a point on the circle as (4, 15), we can use the distance formula to find the radius:

r = \(\sqrt{(4 - 7)^{2} + (15 - 14)^{2} }\) =  \(\sqrt{(-3)^{2} + (1)^{2} }\)= \(\sqrt{9 + 1}\) = \(\sqrt{10}\)

So the standard form equation of the circle is:

\((x - 7)^{2}\) + \((y - 14)^{2}\) = \(\sqrt{(10)^{2} }\)

Which can be written as:

\((x - 7)^{2}\) + \((y - 14)^{2}\) = 10

So the standard form equation of the circle is \((x - 7)^{2}\) + \((y - 14)^{2}\) = 10

To learn more about equation, visit

brainly.com/question/22688504

#SPJ1

The half of the number is 4.5 .

Given in question as  14 is subtracted from 6 times a number.

Let us suppose a number is x.

First find 6 times of a number = 6*x.

6 times can be defined as x + x + x + x + x + x = 6*x.

We have to subtract from 6 times a number.

14 is subtracted from 6 times a number means 6x - 14.

After subtracting 14 is left.

So 6x - 14 = 40.

Add 14 both side of equal sign.

6x-14+14 = 40+14.

6x = 54.

x = 54/6.

x = 9.

Half of the number x is 9/2 = 4.5.

To know more about numbers, here:

https://brainly.com/question/17429689

#SPJ4

P = 8 + 10 + 8 + 10

P = 36

..................................

Answer:

the answer is d the other solution to function fisvī-51

The other solution to function f is √7 - 5i.

The correct option is (2).

A polynomial function with one or more variables, where the largest exponent of the variable is two, is referred to as a quadratic function. In other terms, a "polynomial function of degree 2" is a quadratic function.

Since the function is quadratic, it has two solutions.

The complex roots come in pairs.

If one solution is √7 + 5i,

then the other solution must be the conjugate of √7 + 5i, which is √7 - 5i.

Therefore, the correct statement is:

The other solution to function f is √7 - 5i.

To learn more about the quadratic function;

https://brainly.com/question/11485644

#SPJ7

One solution to a quadratic function, f, is given below.

√7 + 5i

Which of the following statements is true about the given function?

1) The other solution to function f is -√7 + 5i.

2) The other solution to function f is √7 - 5i.

3) Function f has no other solutions.

4) The other solution to function f is -√7 - 5i.

Let's say that out of 100 individuals surveyed, 40 have fewer than three children. The probability of an individual in this survey having fewer than three children would be 40/100 or 0.4.

To calculate the probability of an individual in the survey having fewer than three children, we would need to know the total number of individuals surveyed and how many of those individuals have fewer than three children. Let's say that out of 100 individuals surveyed, 40 have fewer than three children. The probability of an individual in this survey having fewer than three children would be 40/100 or 0.4.

To calculate the probability of an individual in the survey having at least one child, we would need to know how many individuals in the survey have no children. Let's say that out of the 100 individuals surveyed, 20 have no children. The probability of an individual in this survey having at least one child would be (100-20)/100 or 0.8.

To calculate the probability of an individual in the survey having five or more children, we would need to know how many individuals in the survey have five or more children. Let's say that out of the 100 individuals surveyed, only 2 have five or more children. The probability of an individual in this survey having five or more children would be 2/100 or 0.02.

To determine the probability of an individual in this survey having fewer than three children, at least one child, or five or more children, you will need specific data or information about the distribution of children per family in the survey. Once you have that information, you can calculate the probabilities by dividing the number of individuals meeting each condition by the total number of individuals in the survey.

Visit here to learn more about  probability : https://brainly.com/question/30034780
#SPJ11

the ratio of the number of men to the total number of persons is 7:18.

The ratio of the number of men to the total number of persons can be calculated by dividing the number of men by the total number of persons.

Number of men: 112

Total number of persons: 288

Ratio of men to total persons = Number of men / Total number of persons

                            = 112 / 288

To simplify the ratio, we can divide both the numerator and denominator by their greatest common divisor, which is 16 in this case.

112 / 288 = (112 ÷ 16) / (288 ÷ 16)

          = 7 / 18

To know more about number visit:

brainly.com/question/3589540

#SPJ11