what's the answer


a.2 1/4
b. 1 3/4
c. 3 1/4
d. 3/4

Answer: A) 6 A

Step-by-step explanation:

I = V/R

I = 9 / 1.5

I = 6 A

Answer:

From the question we are told that

  The  equation is  [tex]2x sin^2(y) dx - (x^2 + 11) cos(y) dy = 0[/tex]

Generally the goal of this solution is to prove that the implicit solution of the differential  equation above is  [tex]ln(x^2 + 11) + csc(y) = C.[/tex]

First Step  

    Differentiate the solution with respect to  x  

   [tex]0  = \frac{2x}{ x^2 + 11}  + [-cot * csc(y) ]\frac{dy}{dx}[/tex]

=> [tex]0 = \frac{2x}{ x^2 + 11} + [-\frac{cos(y)}{ sin(y) }* \frac{1}{sin(y)} ]\frac{dy}{dx}[/tex]  

=>  [tex]0 = \frac{2x}{ x^2 + 11} + [-\frac{cos(y)}{ sin^2(y) }]\frac{dy}{dx}[/tex]

=>  

multiply through by  [tex]sin^2(y)[/tex] , [tex] x^2 + 11[/tex], [tex]dx[/tex]

So

=> [tex]2 x (sin^2(y) dx + [-cos(y) (x^2 + 11)]dy = 0[/tex]

Looking at the equation obtained we see that it is equivalent to the differential  equation hence  the implicit solution of [tex]2x sin^2(y) dx - (x^2 + 11) cos(y) dy = 0[/tex] is   [tex]ln(x^2 + 11) + csc(y) = C.[/tex]

Step-by-step explanation:

Answer:

37.5 hours

Step-by-step explanation:

12.5 for every 5 days

Question asks for 15 days

5 x 3 = 15

12.5 x 3 = 37.5 hours

Answer:

37.5 hours I think is the correct answer

Answer:

△QPS≅△RPK by reason ASA, SAA

PS = PK , AC = BD , m∠ABC=m∠BAD, ΔAOK ≅ ΔBOL are proved.

Congruent triangles are those of the same size and shape. This means that the corresponding sides are equal, as are the corresponding angles. We can determine whether two triangles are congruent without testing all of their sides and angles.

1) in ΔPQR we have ,

             PQ = PR

IN,       ∠PRQ = ∠PQR (Isosceles triangle)

180° - ∠PQR = 180° - ∠PQR

         ∠PQR = ∠PSQ

IN ΔPSQ = PRK

        ∠SPQ = ∠RPK

            ∠Q = ∠R IS GIVEN IN QUESTION SO,

       ∠SPQ = ∠RPQ

so, by ASA congruence  we have ,

     ΔPSQ ≅ ΔPRK

    So, PS = PK

hence proved .

2) There are several ways two triangles can be congruent.

AC = BD congruent by SAS

ABC ≅ BAD congruent by the corresponding theorem

In ΔAOC and ΔBOD, we have the following observations

AO = DO ( O is the midpoint of line segment AD)

BO = CO ( Because O is the midpoint of line segment BC)

∠AOB = ∠COD (vertical angles are congruent)

  ∠AOC = ∠BOD ( vertical angles are congruent)

Using the SAS (side-angle-side) postulate, we have:

AC = BD

Using the corresponding theorem,

ΔABC ≅ ΔBAD

The above congruence equation is true because:

2 sides of both triangles are congruent

1 angle each of both triangles is equal

Corresponding angles are equal

Hence Proved.

3) There are several ways two triangles can be congruent.

ΔAOK ≅ ΔBOK

are congruent by SAS

In ΔAOL and ΔBOK, we have the following observations

AO = BO ( O is the midpoint of line segment AB)

∠AOL = ∠BOK ( vertical angles are congruent)

LO = KO ( O is the midpoint of line segment KL)

Using the SAS (side-angle-side) postulate, we have:

ΔAOK ≅ ΔBOK

The above congruence equation is true because:

2 sides of both triangles are congruent

1 angle each of both triangles is equal

Hence proved

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Answer:

\

Step-by-step explanation:

its to blurry what does it say so i can help

Answer:

its too blurry

Step-by-step explanation:

Answer:

the bigger angle is 119

the smaller one is 61

Answer:

it would be all positive #s (real #s)

Step-by-step explanation:

The domain can be All positive real numbers

Real numbers are numbers that include both rational and irrational numbers. Rational numbers such as integers (-2, 0, 1), fractions(1/2, 2.5) and irrational numbers such as √3, π(22/7).

Given:

y = 0.75x

where y is number of purchasing post cards and x is the number of post cards purchased.

as, x is number of postcard purchased.

So, number of postcard purchased cannot be negative, only positive real number are allowed.

Hence, the possible domain is All positive real numbers

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Answer:

m = 4

Step-by-step explanation:

solve for m 3+5m = 8m-9

3+5m = 8m-9

  -5m   -5m

3 = 3m-9

+9       +9

12 = 3m

/3    /3

4 = m

m = 4

Answer:

[tex]Digit = 7 * 10 +4 * 1 + \frac{0}{10} + \frac{5}{100} + \frac{2}{1000}[/tex]

Step-by-step explanation:

Given

[tex]Digit = 74.052[/tex]

Required

Expand

[tex]Digit = 74.052[/tex]

Split into individual digits

[tex]Digit = 7 * 10 +4 * 1 + 0 * 0.1 + 5 * 0.01 + 2 * 0.001[/tex]

Convert all decimals to fraction

[tex]Digit = 7 * 10 +4 * 1 + 0 * \frac{1}{10} + 5 * * \frac{1}{100} + 2 * * \frac{1}{1000}[/tex]

[tex]Digit = 7 * 10 +4 * 1 + \frac{0}{10} + \frac{5}{100} + \frac{2}{1000}[/tex]

Answer:

There are significant differences among the mean tensile strengths for different temperatures.

Step-by-step explanation:

A one-way ANOVA is used to test whether there is significant difference between the means for more than two groups.

The hypothesis can be defined as follows:

H₀: There is no difference between the means, i.e. [tex]\mu_{1}=\mu_{2}=\mu_{3}=\mu_{4}[/tex].

Hₐ: There is a significant difference between the means, i.e.at least one of the mean is different.

Use MS-Excel to perform the analysis of variance.

Go to Data → Data Analysis → Anova: Single Factor.

A dialog box will open.

Enter the data and enter Alpha as 0.05.

Press OK.

The output is attached below.

The F-value is, 8.40458.

The p-value of the test is, 0.00139.

Decision Rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected.

p-value = 0.00139 < α = 0.05

The null hypothesis will be rejected at 5% level of significance.

Concluding that there are differences among the mean tensile strengths for different temperatures.

Answer

​​  -4/3

Step-by-step explanation:

Answer:

D) Inequality

Step-by-step explanation:

Got it right on edge

Answer:

a

   [tex]\mu=E(y) = 7.9[/tex]

b

  [tex]\sigma = 2.17[/tex]

c

 [tex]P(4 < X < 12) = 0.96[/tex]

Step-by-step explanation:

From the question the data given is  

     y      3         4       5       6       7       8      9      10        11      12      13

    p(y)  0.03  0.05  0.07  0.10  0.14  0.20  0.18  0.12  0.07  0.03  0.01

Generally the mean is mathematically represented as

      [tex]\mu =E(y) = \sum_{n=3}^{13} x_i * P(x_i)[/tex]

=>   [tex]\mu =E(y) = 3 * 0.03 + 4 * 0.05 + \cdots +13 * 0.01[/tex]

=>   [tex]\mu=E(y) = 7.9[/tex]

Generally the standard deviation is mathematically represented as

     [tex]\sigma = \sqrt{ [var(y)]}[/tex]

Here [tex][var(y)][/tex] is the variance which is mathematically represented as

       [tex][var(y)] = [\sum_{n=3}^{13} x_i^2 * P(x_i)] -[ E(y)]^2[/tex]

=>     [tex][var(y)] =[ (3^2 * 0.03 ) + (4^2 * 0.05)+ \cdots + (13^2 * 0.01)] -[ 7.9]^2[/tex]

=>     [tex][var(y)] =67.14 - 62.41[/tex]

=>     [tex][var(y)] =4.73[/tex]

Thus  

     [tex]\sigma = \sqrt{ 4.73}[/tex]  

      [tex]\sigma = 2.17[/tex]

Generally the interval given is   µ ± 2σ  i.e  [  µ - 2σ ,  µ +2σ]

substituting values  

             [tex][7.9 - 2(2.17) ,7.9 - 2(2.17) ][/tex]

            [tex][3.56 ,12.24 ][/tex]

Now approximating this interval to a whole number

          [tex][4 ,12][/tex]

Hence the probability  that the value of Y falls in the interval µ ± 2σ is mathematically represented as

     [tex]P(4 < X < 12) = P(x__4} ) + \cdots + P(x__{12}})[/tex]

      [tex]P(4 < X < 12) = 0.05 + \cdots +0.03[/tex]

     [tex]P(4 < X < 12) = 0.96[/tex]

Answer:

n = 16

Step-by-step explanation:

8n/9 = 6.4/0.45

Cross multiply.

0.45 * 8n = 9 * 6.4

3.6n = 57.6

n = 16

Answer:

Step-by-step explanation:

8n  =   6.4

9        0.45

simplify:

8n  =  14.222

9      

cross multiply:

8n = 14.222 (9)

n = 128

        8

n = 16

Answer:

[tex]sqrt{-64} =8i\\\\sqrt{-15} =isqrt{15} \\sqrt{-100} =10i\\sqrt{-25} =2i\sqrt{6}[/tex]

Step-by-step explanation:

I hope this helps

Answer:

60n+36

Step-by-step explanation:

12*5n+12*3=60n+36

Hey there!

(5n+3)12 is the same as

12(5n+3)

because we multiply 12 times 5n and 3:

60n+36

And we can't simplify this any further, because 60n and 36 aren't like terms.

Hope everything is clear.

Let me know if you have any questions!

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Answer Given By:

An ~Emotional helper ~

Answer:

  (3x -10)(x -2)

Step-by-step explanation:

You want to start by finding two factors of 3·20 = 60 that have a total of -16.

  60 = (-1)(-60) = (-2)(-30) = (-3)(-20) = (-4)(-15) = (-5)(-12) = (-6)(-10)

The last of these factor pairs (-6, -10) have a total of -16, so these are what you need to rewrite the middle term:

  3x² -6x -10x +20

Now, you can factor by pairs:

  = 3x(x -2) -10(x -2)

  = (3x -10)(x -2) . . . . your factored trinomial

Answer:

a. 19%

Step-by-step explanation:

The percent of the initial set-up and operation costs that Sam needs to finance with a lender or investor is A. 19%.

A percentage is a number or ratio that can be expressed as a fraction of 100. A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used. A percentage is a dimensionless number; it has no unit of measurement.

here, we have,

to illustrate the percentage:

From the information given,

Sam is planning to start a pool cleaning business from his home.

he has developed a cost analysis for the set-up and operation for the first year of his business.

He has $9,000 in savings and $23,000 in credit that he can use for the business.

so, we get,

Here, the percent of the initial set-up and operation costs that Sam need to finance with a lender or investor is simply 19%.

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Answer:

Factors of 15 include 3 and 5; multiples of 15 include 30, 45, 60, etc.

Step-by-step explanation:

Factors and multiples are different things. But they both involve multiplication. Factors are what we can multiply to get the number. Multiples are what we get after multiplying the number by an integer

Answer:

the answer 18.0008

Step-by-step explanation:

Answer:

Step-by-step explanation:

1st step, we use the distance formula. After plugging in we simplify.

2-7 = 5 / 6-18 = 12.

Then we are left with 5^2 and 12^2

5x5 = 25 and 12x12 is 144

we added them up and get 169

The square root of 169 is the answer to the distance.

Answer:

17.70-2.90=14.80

14.80/1.85=8

He could buy a maximum of 8 chip bags.

bags of chips = x

17.70-2.90/1.85≥x

Answer:

D

Step-by-step explanation:

Slope of BC

= - 1/3

Altitude to BC

= 3

The required slope of the AD altitude to BC is given by option D. 3

AD is the altitude to BC

Altitude is defined as the perpendicular line to the line from the opposite vertex of the triangle.

for ΔABC, AD is the altitude to BC

Since, the slope of the perpendicular line is equal to the negative inverse of the slope of the line over which its is perpendicular.
so,
slope of AD= -1/slope of BC

slope of BC = -1-2/3+6
= -3/9
slope of BC = -1/3
Hence,
slope of AD = -1/-1/3
= 3

Thus, The required slope of the AD altitude to BC is given by 3.

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Answer:

0.1588

Step-by-step explanation:

Multiply total hours worked by pay rate:

20.5 x $13.75 = $281.88

Answer:

It is impossible to find two points that are both 1 inch and 1.5 inches from the point A simultaneously as shown in the following proof

From segment addition postulate given a point C that is between the points of a segment AB, we have;

AC + CB = AB

Therefore, where AC = 1 inch and CB = 1.5 inches, we have;

AC + CB = 1 inch + 1.5 inches = 2.5 inches ≠ AB = 3 inches

However it is possible to find two points in which one of the points is 1 inch from the point A while the other point is 1.5 inches from the point B

Step-by-step explanation:

Answer:

 b

Step-by-step explanation:

Answer:

The answer is B

Answer:

16 rows

Step-by-step explanation:

448 rows

28 flowers in each

448/28=16

Answer:

16 rows

Step-by-step explanation:

448 :28 =16 rows