HELP 2 math questions 20 points

Answer:

не знаю Не до х#я не знаю

Answer:

3rd option

Step-by-step explanation:

7.6, 7.42, square 48,  79%=0.79

Answer:

C

Step-by-step explanation:

To make this easier, simplify all values to rational numbers (simplify from percentages and roots):

79% → 79÷100 → 0.79

√48 ≈ 6.9

Now order from greatest to least (descending):

[tex]7.6,7.42,6.9,0.79[/tex]

Re-insert the given values before simplification:

7.6, 7.42, √48, 79%

The correct answer is option C.

:Done

Answer:

c = 19/2 - 1/2a

Step-by-step explanation:

Step 1: Write equation

2a + 4c = 38.00

Step 2: Solve for c

Subtract 2a on both sides: 4c = 38 - 2a

Divide both sides by 4: c = 19/2 - 1/2a

Step-by-step explanation:

2 (a+2c)=38

a+2c=19

c=(19-a)/2

Answer:

yellow?

Step-by-step explanation:

so you have 1 then add another an get yellow, bam im a genius

Answer:

i think you have to first find the first 50 numbers of pi then x that my 96,1000 then you should turn on then off the   works to but if you have a switch it wont work so after that you have to tell who ever you live with that they need to keep talking and never stop being them  and that they are nice person  then you get the answer

Step-by-step explanation:

this only works if you are cool enough

Answer:

5/3x + 4 = 2/3x  

Step One- Subtract 5/3x to isolate the variable  

4 = -3/3x  

Step Two- Divide –3/3 to make your equation easier  

4 = -x  

Step Three- Divide by -1 (the lone negative cannot be there. It always represents a  –1)  

-4 = x      is your answer!  

Hopefully this helped! Feel free to mark brainliest!

Answer:

Step-by-step explanation:

When taking 100 samples of size 30 or greater from a population, exactly 95 of them will create a confidence interval that contains the true population mean. True or false?

This statement is false, or better still, ambiguous. 100 samples of size 30 (or greater) each, means 300 total and it can't be just 95 of them that will contain the true population mean.

Answer:

First one- The ? across from 70 degrees is 70 degrees, and the ones on the side are both 110 degrees.

The second one- The one across 53 degrees is 53 degrees and the ones are the side are both 127 degrees.

Step-by-step explanation:

Take the shown angle and subract that by 180 degrees to get your answer for the missing angles. And the one across from the shown angle is the same number.

Hope this helped im not sure if its right though.

Answer:

2 y^6

Step-by-step explanation:

Simplify the following:

(2 x y^2)^5/((4 x^2 y)^2 x y^2)

Hint: | Distribute exponents over products in (4 x^2 y)^2.

Multiply each exponent in 4 x^2 y by 2:

(2 x y^2)^5/(4^2 x^(2×2) y^2 x y^2)

Hint: | Multiply 2 and 2 together.

2×2 = 4:

(2 x y^2)^5/(4^2 x^4 y^2 x y^2)

Hint: | Evaluate 4^2.

4^2 = 16:

(2 x y^2)^5/(16 x^4 y^2 x y^2)

Hint: | Distribute exponents over products in (2 x y^2)^5.

Multiply each exponent in 2 x y^2 by 5:

(2^5 x^5 y^(5×2))/(16 x^4 y^2 x y^2)

Hint: | Multiply 5 and 2 together.

5×2 = 10:

(2^5 x^5 y^10)/(16 x^4 y^2 x y^2)

Hint: | Compute 2^5 by repeated squaring. For example a^7 = a a^6 = a (a^3)^2 = a (a a^2)^2.

2^5 = 2×2^4 = 2 (2^2)^2:

(2 (2^2)^2 x^5 y^10)/(16 x^4 y^2 x y^2)

Hint: | Evaluate 2^2.

2^2 = 4:

(2×4^2 x^5 y^10)/(16 x^4 y^2 x y^2)

Hint: | Evaluate 4^2.

4^2 = 16:

(2×16 x^5 y^10)/(16 x^4 y^2 x y^2)

Hint: | Multiply 2 and 16 together.

2×16 = 32:

(32 x^5 y^10)/(16 x^4 y^2 x y^2)

Hint: | In (32 x^5 y^10)/(16 x^4 y^2 x y^2), divide 32 in the numerator by 16 in the denominator.

32/16 = (16×2)/16 = 2:

(2 x^5 y^10)/(x^4 y^2 x y^2)

Hint: | For all exponents, a^n a^m = a^(n + m). Apply this to (2 x^5 y^10)/(x^4 y^2 x y^2).

Combine powers. (2 x^5 y^10)/(x^4 y^2 x y^2) = 2 x^(5 - 1 - 4) y^(10 - 2 - 2):

2 x^(5 - 1 - 4) y^(10 - 2 - 2)

Hint: | Evaluate 5 - 1 - 4.

5 - 1 - 4 = 0:

2 x^0 y^(10 - 2 - 2)

Hint: | Evaluate 10 - 2 - 2.

10 - 2 - 2 = 6:

2 x^0 y^6

Hint: | Any nonzero expression to the zero power is one.

x^0 = 1:

2×1 y^6

Hint: | Simplify the expression.

Write 2×1 y^6 as 2 y^6:

Answer: 2 y^6

Answer:

6/8

9/12

12/16

Step-by-step explanation:

Answer:

Skew.

Step-by-step explanation:

Answer:

D- skew

Step-by-step explanation:

Just took the test today and got it right :)

Answer:

8

Step-by-step explanation:

Divide the new length by the original length:

Scale factor = 2/14

Simplified = 1/7

Just doing this for the points.

Its 1/7 simplified, I took the test.

Hey there! I'm happy to help!

The additive inverse of a number is one that has its sign switched. If you put a - before a number, the sign switches. We put a - before -5, so its sign switches. -5's additive inverse is 5, so this 18+5, giving us 23.

The additive inverse of -5 is +5, so 18 - (-5)=23.

Have a wonderful day! :D

Answer:

Most of U.S. electricity generation is from electric power plants that use a turbine or similar machine to drive electricity generators. A turbine converts the potential and kinetic energy of a moving fluid (liquid or gas) to mechanical energy.

Step-by-step explanation:

pls mark brainliest

Answer:

most power stations make use of turbines which drives power generators. A turbine converts potential and kinetic of moving fluid to mechanical energy.

Answer:

42-x = James' money now

Step-by-step explanation:

James has "42-x dollars" after purchasing a gift for his sister.

Expression for money left to James to be determine if he spend x dollars from $42.

Arithmetic is branch of math that teach how  a word statement can be transform to mathematical expression.

Here, James spend x dollars to bought his sister a gift from $42.
Now, James has only 42-x dollars left in his pocket.

Thus, James has '42-x' dollars after purchasing a gift for his sister.

Learn more about arithmetic here:
https://brainly.com/question/24873057

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Answer:

0.4=40%

Step-by-step explanation:

hope this helps!!!

Answer:

He bought 15 gallons of gasoline.

Step-by-step explanation:

In the expression [tex]15n+2(3p)[/tex]

[tex]n=[/tex] price of each gallon of gasoline

[tex]p=[/tex] cost of each snack bought

We can go ahead and distribute.

[tex]15n+6p[/tex]

The [tex]6p[/tex] means he bought 6 snacks. The [tex]15n[/tex] means he bought 15 gallons of gasoline.

Answer:

c

Step-by-step explanation:

Answer:LJ = 18 + 28 = 46

Step-by-step explanation:

Suppose J, K, L, M, N are points on the same line.

MK = MN + (-KN) = MN - KN = 9x - 11 - x - 3 = 8x - 14

Since LK = MK and LK = 7x - 10, then

7x - 10 = 8x - 14

8x - 7x = -10 + 14

x = 4

LJ = MK + KJ

MK = LK = 7x - 10 = 7(4) - 10 = 28 - 10 = 18

LJ = 18 + 28 = 46

Answer:

Step-by-step explanation:

y - 3 = 2(x + 2)

y - 3 = 2x + 4

y = 2x + 7

Answer:

9000

Step-by-step explanation:

This is written in scientific notation. When you have a positive exponent (x³), You move the decimal point to the right as many times as the exponent says. Since the exponent is +3, move the decimal to the right 3 spaces:

[tex]9.0(0)\\\\90.0(1)\\\\900.0(2)\\\\9000.0(3)[/tex]

So:

[tex]9*10^3=9000[/tex]

:Done

*Magnifying means that the image will be bigger. So, the new number has to be greater than 9. Since 9000>9, this is true.

Answer:

$17,640

Step-by-step explanation:

Stuco wants to start a new project to help with trash removal. They need $15 to buy supplies at the local landfill and they charge 75 per pound. If the Senior Class collects 235 pounds of trash, the cost  is going to be $17,640.

235 ⋅ 75 = 17,625

17,625 + 15 = 17,640

Therefore, the answer is $17,640.

Answer:

is there more to the question? this does not make seince  

Step-by-step explanation:

Answer:

Babysitting =$8.7

Water park =$8.7

Step-by-step explanation:

In 1 week

Babysitting =3 hrs

Water park = 10 hrs

Total =$ 109

In week 2

Babysitting = 8 hrs

Water park = 12 hrs

Total= $ 177

Both weeks

Babysitting =11 hrs

Water park =22 hrs

Total=$286

33 hrs = $ 286

11 hrs =?

11×286÷33=$95.3

33 hrs = $286

22 hrs = ?

22×286÷33=190.7

Babysitting she got $95.3 in both weeks

Water park she got $190.7(rounded offf)in both weeks

11 hrs = $95.3

1 hr = ?

1×95.3÷11=8.7 (rounded off )

22 hrs = $ 190.7

1 hr = ?

1×190.7÷22= 8.7( rounded off)

Answer:

(2n+3)(−2)

=(2n+3)(−2)

=(2n)(−2)+(3)(−2)

=−4n−6

Answer:

D 9m 4m because 9 divided by 2 is 3 and 4 divided by 2 is 2 and that's us you answer.

Answer:

No the factor of x^2 + 1 = n x^2 + 1

Step-by-step explanation:

Answer:

the number which is divisible only by itself and 1 is called prime number. For example; 2,3, 5, 7, 11 and others.

Convert to polar coordinates, in which the circle's equation becomes

[tex]\left(\dfrac x5\right)^2+\left(\dfrac y5\right)^2=1\implies x^2+y^2=5^2\implies r^2=5^2\implies r=5[/tex]

where [tex]x=5\cos\theta[/tex] and [tex]y=5\sin\theta[/tex], and we get the part of the circle in the first quadrant with [tex]0\le \theta\le\frac\pi2[/tex].

So the integral is

[tex]\displaystyle\int_C(8x-3y)\,\mathrm ds=\int_0^{\frac\pi2}(8x(\theta)-3y(\theta))\sqrt{\left(\dfrac{\mathrm dx}{\mathrm d\theta}\right)^2+\left(\dfrac{\mathrm dy}{\mathrm d\theta}\right)^2}\,\mathrm d\theta[/tex]

[tex]=\displaystyle\int_0^{\frac\pi2}(40\cos\theta-15\sin\theta)\sqrt{25\cos^2\theta+25\sin^2\theta}\,\mathrm d\theta[/tex]

[tex]=\displaystyle25\int_0^{\frac\pi2}(8\cos\theta-3\sin\theta)\,\mathrm d\theta[/tex]

[tex]=25(8\sin\theta+3\cos\theta)\bigg|_0^{\frac\pi2}=200-75=\boxed{125}[/tex]

Line integral involves integrating a function along a curve

The value of the line integral is 125

The equation is given as:

[tex]\mathbf{(\frac{x}{5})^2 + (\frac{y}{5})^2 = 1}[/tex]

Expand

[tex]\mathbf{\frac{x^2}{5^2} + \frac{y^2}{5^2} = 1}[/tex]

Multiply through by 5^2

[tex]\mathbf{x^2 + y^2 = 5^2}[/tex]

The equation of a circle is represented as:

[tex]\mathbf{(x - a)^2 + (y - b)^2 = r^2}[/tex]

So, by comparison

[tex]\mathbf{r^2 = 5^2}[/tex]

[tex]\mathbf{r = 5}[/tex]

Where:

[tex]\mathbf{x = rcos\theta}[/tex]

[tex]\mathbf{y = rsin\theta}[/tex]

So, we have:

[tex]\mathbf{\int_c (8x - 3y)ds}[/tex]

Because it is in the first quadrant (i.e. 0 to pi/2), the integrand becomes

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_0 (8x - 3y)rd\theta}[/tex]

Convert to polar forms

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_0 (8x - 3y)\sqrt{x^2 + y^2}d\theta}[/tex]

Substitute [tex]\mathbf{x = rcos\theta}[/tex] and [tex]\mathbf{y = rsin\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c (8rcos(\theta) - 3rsin(\theta))\sqrt{(rcos(\theta))^2 + ( rsin(\theta))^2}d\theta}[/tex]

Substitute 5 for r

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c (40cos(\theta) - 15sin(\theta))\sqrt{25cos^2\theta + 25sin^2\theta}\ d\theta}[/tex]

Factor out 5

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c 5(8cos(\theta) - 3sin(\theta))\sqrt{25cos^2\theta + 25sin^2\theta}\ d\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c 5(8cos(\theta) - 3sin(\theta))\sqrt{25(cos^2\theta + sin^2\theta)}\ d\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c 5(8cos(\theta) - 3sin(\theta))5\sqrt{(cos^2\theta + sin^2\theta)}\ d\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds = \int\limits^{\frac{\pi}{2}}_c 25(8cos(\theta) - 3sin(\theta))\sqrt{(cos^2\theta + sin^2\theta)}\ d\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =25 \int\limits^{\frac{\pi}{2}}_c (8cos(\theta) - 3sin(\theta))\sqrt{(cos^2\theta + sin^2\theta)}\ d\theta}[/tex]

In trigonometry

[tex]\mathbf{cos^2\theta + sin^2\theta = 1}[/tex]

So, we have:

[tex]\mathbf{\int_c (8x - 3y)ds =25 \int\limits^{\frac{\pi}{2}}_c (8cos(\theta) - 3sin(\theta))\sqrt{1}\ d\theta}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =25 \int\limits^{\frac{\pi}{2}}_0 (8cos(\theta) - 3sin(\theta))\ d\theta}[/tex]

Integrate

[tex]\mathbf{\int_c (8x - 3y)ds =25 \times [ (8sin(\theta) + 3cos(\theta))\ } ]|\limits^{\frac{\pi}{2}}_0}[/tex]

Expand

[tex]\mathbf{\int_c (8x - 3y)ds =25 \times ([ 8sin(\frac{\pi}{2}) + 3cos(\frac{\pi}{2})] - ([ (8sin(0) + 3cos(0)])}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =25 \times ([ 8\times 1 + 3\times 0)] - ([ (8\times 0 + 3\times 1])}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =25 \times ([ 8] - [ 3])}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =25 \times 5}[/tex]

[tex]\mathbf{\int_c (8x - 3y)ds =125}[/tex]

Hence, the value of the line integral is 125

Read more about line integrals at:

https://brainly.com/question/16571667