Algebra 2 please help!!

Answer:

no solutions

Step-by-step explanation:

Substitute -2/5(x) - 1 for y in 2x + 5y = 20

Therefore, the answer is no solutions.

Answer:

The speed of the flying carpet in still air is 15.2 mph

Step-by-step explanation:

Answer:

15.2

Step-by-step explanation:

Do the math

Answer:

6

4

12

72

Step-by-step explanation:

Base is 6 in

Height is 4 in

To get the area of a triangle is 1/2 Base × Height

Being 1/2(6)(4) = 12

To get the area of a rectangle is Length × Width being 9 × 8 = 72

Range is the difference between the highest score and lowest score.

To find the range the teacher needs to know the highest and lowest grades in the test.

Using Dz and D'z to denote partial derivatives of z with respect to x and y respectively, the equation becomes (D^2 -1)z=0 or (D-1)(D+1)z=0. Put (D+1)z = u(x,y). Then we have (D-1)u =0. The general solution of this equation is u(x,y)=A(y).e^x, where A(y) is an arbitrary function of y, because we have integrated a partial derivative of u with respect to x, and we have to take an arbitrary function of y instead of an arbitrary constant.

Now the original equation becomes

(D+1)z=A(y)e^x and we integrate it with respect to x, giving ze^x = Int[e^x.A(y).e^x.dx] + B(y), (for another arbitrary function B(y)) = (1/2)e^(2x).A(y) +B(y) or

z(x,y) = B(y)e^(-x)+[A(y)e^x]/2 or

z = B(y)e^(-x) + C(y)e^x. Hence putting x=0,

e^y = B(y)+C(y) and Dz= -e^(-x)B(y) + e^x.C(y). Again putting x=0, we get 1 = -B(y) + C(y). Solving the two equations in B(y) and C(y), we have C(y) = (1+e^y)/2, and B(y) = (e^y -1)/2. Hence the required solution is

z = [(e^y -1).e^(-x)]/2 + [(e^y +1).e^x]/2 =

z = (e^y)cosh(x) + sinh(x).

Answer:

Step-by-step explanation:

0.32, give her brainliest

I assume you're given the binary number, 11111₂. Expanding the digits in base 10, this is the same as

1•2⁴ + 1•2³ + 1•2² + 1•2¹ + 1•2⁰

= 16 + 8 + 4 + 2 + 1

= 31

Answer:

3.336

Step-by-step explanation:

I am 15% I think I did the wrong calculation.

Answer:

y = 5.5x - 17

Step-by-step explanation:

(4,5)(2,-6)

Answer:

1

9=thousands

6=hundreds

0=tens

7=tens of thousands

5=hundreds of thousands

2

8=hundreds of thousands

6=millions

4=thousands

7=tens

0=tens of thousands

1. Place value of 9 = Thousands

Place value of 6 = Hundreds

Place value of 0 = Tens

Place value of 7 = Ten thousands

Place value of 5  = Hundred thousands

2. Place value of 8 = Thousandths

Place value of 6 = Hundredths

Place value of 4 = Hundred thousandths

Place value of 7 = Ten millionths

Place value of 0 = Ten thousandths

The place value is the position of each digit in a number. The place value of digits is determined as ones, tens, hundreds, thousands, ten-thousands and so on, based on their position in the number.

Given

1. 579,601

Place value of 9 = Thousands

Place value of 6 = Hundreds

Place value of 0 = Tens

Place value of 7 = Ten thousands

Place value of 5  = Hundred thousands

2. .56,804,379

Place value of 8 = Thousandths

Place value of 6 = Hundredths

Place value of 4 = Hundred thousandths

Place value of 7 = Ten millionths

Place value of 0 = Ten thousandths

Find out more information about place value here

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Answer:

C. a two-way distribution.

A segmented bar graph can be used to illustrate two-way distribution.

Answer:

true

Step-by-step explanation:

three times four equals twelve.

Answer:

Far left one, A

Step-by-step explanation:

Answer:

As 4 of the 22 males questioned liked talking on the phone, the odds are 4/22

Step-by-step explanation:

Answer:

Vertical angles = 81 degrees

Angle (4y-1) = 99 degrees

Linear pair = 81 + 99 = 180 degrees

Step-by-step explanation:

2x + 5 = 3x - 33 (vertical angles)

33+5 = 3x - 2x

38 = x

3(38) - 33 = 81 degrees

4y - 1 + 81 = 180 (linear pair angles)

4y = 180 - 80

y = 100/4

y = 25

4(25) -1 = 99 degrees

Answer:

See below:

Step-by-step explanation:

So, the question asks how far she drives in a month, this probably includes going to work and coming back. Therefore, each day takes 2 times 75 which is 150!

Now, we know she goes 150 miles each day going to work and coming back. We can now multiply that by 21 to get out answer.

We can split 21 into 10 * 2 + 1 for our convenience.

150 times 10 is 1500 and that times two is 3000 added by 150 is 3150.

Then we get out answer; 3150 miles!

If this answer helped you, consider marking as brainliest :)

Answer:

57.15

Step-by-step explanation:

22.5*2.54 is 57.15

The board is 57.15 centimeters long.

To convert the length of the board from inches to centimeters, we need to use the conversion factor of 1 inch equals 2.54 centimeters.

Given that the board is 22.5 inches long, we can multiply this value by the conversion factor to find the equivalent length in centimeters.

Length in centimeters = Length in inches × Conversion factor

Length in centimeters = 22.5 inches × 2.54 centimeters/inch

Calculating this expression:

Length in centimeters = 57.15 centimeters

Therefore, the board is 57.15 centimeters long.

Learn more about conversion factor click;

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Answer:

X intercept is (5,0)

y intercept is (0,10)

Answer:

See Below.

Step-by-step explanation:

We want to verify the equation:

[tex]\displaystyle \frac{\tan\theta}{ 1- \cot \theta} + \frac{\cot\theta}{1 - \tan\theta} = \frac{\dfrac{\sin\theta}{\cos\theta}}{1 - \dfrac{\cos\theta}{\sin\theta}} + \frac{\dfrac{\cos\theta}{\sin\theta}}{1 - \dfrac{\sin\theta}{\cos\theta}}[/tex]

Recall that tanθ = sinθ / cosθ. Likewise, cotθ = cosθ / sinθ. Then by substitution:

[tex]\displaystyle \begin{aligned} \frac{\tan\theta}{ 1- \cot \theta} + \frac{\cot\theta}{1 - \tan\theta} & = \frac{\dfrac{\sin\theta}{\cos\theta}}{1 - \dfrac{\cos\theta}{\sin\theta}} + \frac{\dfrac{\cos\theta}{\sin\theta}}{1 - \dfrac{\sin\theta}{\cos\theta}} \\ \\ & \stackrel{\checkmark}{=} \frac{\dfrac{\sin\theta}{\cos\theta}}{1 - \dfrac{\cos\theta}{\sin\theta}} + \frac{\dfrac{\cos\theta}{\sin\theta}}{1 - \dfrac{\sin\theta}{\cos\theta}} \end{aligned}[/tex]

Hence verified.

Given :

To Do :-

Proof :-

We know that ,

On using above two in LHS ,

Hence proved !

Using the value of the 4 which is 0.4 (keeping the decimal point in the same place)

0.4 x 10 = 4

Answer: 4

Answer:

1/4

Step-by-step explanation:

250 / 62.5 = 1/4 of the tablet

I know this isn't a good explanation but you can use a calculator for this :)

Answer:

10

Step-by-step explanation:

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Answer:

4

Step-by-step explanation:

1. 8^(2/3) is the same thing as [tex]\sqrt[3]{8^2}[/tex]

Therefore, (8)^(2/3) equals 4.