In Social Studies this year we learned a lot of things like Panama and the Canal. One of the favorite things that I learned this year is The Reconstruction Era. In that lesson, we learned that The Reconstruction era was the period after the American Civil War from 1865 to 1877 and the purpose of the Reconstruction was to help the South become a part of the Union again. My favorite lesson that we learned was How American Indians Viewed Their Environment. That was my favorite lesson because we learned that the natives believed that each part of nature had its own spirit and each person had to maintain a balance with these spirits. In conclusion.......​

Answer:

13.5

Step-by-step explanation:

area: 1/2*[x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)]

Answer:

x² can be written as (3.8 * 10⁵)² = 3.8² * 10⁵ * ² = 14.44 * 10¹⁰.

x² / y = 14.44 * 10¹⁰ / 5.9 * 10⁴ ≈ 2.45 * 10⁶

Step-by-step explanation:

[tex]a) \\ (8 \times {10}^{ - 3} ) \times (2 \times {10}^{ - 4} ) \\ = 8 \times 2 \times {10}^{ - 3} \times {10}^{ - 4} \\ = 16 \times {10}^{ - 3 - 4} \\ = 16 \times {10}^{ - 7} \\ = 1.6 \times {10}^{ - 6} \\ \\ b) \\ (6 \times {10}^{ 2} ) \div (3\times {10}^{ - 5} ) \\ \\ = \frac{6 \times {10}^{ 2}}{3\times {10}^{ - 5}} \\ \\ = \frac{2\times {10}^{ 2}}{ {10}^{ - 5}} \\ \\ = 2 \times {10}^{ 2 + 5} \\ \\ = 2 \times {10}^{7} \\ [/tex]

Answer:

The value of the expression given is:

Step-by-step explanation:

First, you must divide the expression in three, and to the final, you can multiply it:

Now, we can solve each part one by one:

First part.

And we elevate this to -2:

Second part.

And we elevate this to 4:

Third Part.

At last, we multiply all the results obtained:

We approximate the value because the difference to 4 is minimal, which could be obtained if we use all the decimals in each result.

Answer:

[tex]\Huge \boxed{\mathrm{4}}[/tex]

[tex]\rule[225]{225}{2}[/tex]

Step-by-step explanation:

[tex]\displaystyle \sf (3^8 * 2^{-5} * 9^0)^{-2} * (\frac{2^{-2}}{3^3 } )^4 *3^{38}[/tex]

Distributing the power of -2 to the parenthesis,

[tex]\displaystyle \sf (3^{-16} * 2^{10} * 9^0)* (\frac{2^{-2}}{3^3 } )^4 *3^{38}[/tex]

Distributing the power of 4 to the fraction,

[tex]\displaystyle \sf (3^{-16} * 2^{10} * 9^0)* (\frac{2^{-8}}{3^{12} } )*3^{38}[/tex]

Multiplying,

[tex]\displaystyle \sf \frac{3^{-16} * 2^{10} * 9^0* 2^{-8} *3^{38}}{3^{12} }[/tex]

Simplifying,

[tex]\displaystyle \sf \frac{2^2 *3^{22}}{3^{22} }[/tex]

[tex]\sf 2^2 =4[/tex]

[tex]\rule[225]{225}{2}[/tex]

Answer:

D

Step-by-step explanation:

the x coordanate length is 9, because | -4-5 | = 9

and the y coordanate is 13 becasue | -7 - 6 | = 13

Then you do [tex]a^{2}+b^{2} = c^{2}[/tex] which equals 5√10 or approximately 15.81139 which rounds to 15.81

Answer:

±5 sqrt(2) =x

Step-by-step explanation:

50 – x^2 = 0

Add x^2 to each side

50 = x^2

Take the square root of each side

±sqrt(50) = sqrt(x^2)

±sqrt(25*2) = x

±sqrt(25)sqrt(2)=x

±5 sqrt(2) =x

Answer:

If you have to choose an alternative, it is C. [tex]x=5\sqrt{2}[/tex] is one of the solutions/roots of the quadratic equation, but the correct answer is actually [tex]x= \pm 5\sqrt{2}[/tex].

Step-by-step explanation:

[tex]50-x^2 = 0 \Rightarrow x^2=50[/tex]

[tex]x= \pm \sqrt{50}[/tex]

Once [tex]\sqrt{50} =\sqrt{2\cdot5\cdot 5}= 5\sqrt{2}[/tex]

[tex]x= \pm 5\sqrt{2}[/tex]

Answer:

Step-by-step explanation:

Well, first you'd have to get the equations in slope-intercept form in order to make it easier for you to see it in the bigger picture. 2x+y=4 would be y= 2x-4, and the other equation would be y= x-3. If you were to solve it, there would be one solution since the y's cancel out. If you graphed it, there would be a point of intersection, unlike when the lines are parallel if there's 0 solutions or only one line's there if there's infinitely many solutions.

Answer:

28 points

Step-by-step explanation:

A touch down is 6 points and an extra point is 1 point

There are 4 quarters

6+1 = 7

4 quarters

4*7 = 28

They scored 28 points

Answer:

[tex]25x^{10}[/tex]

Step-by-step explanation:

[tex](5x^5)^2\\\\\text {Apply Rule: }(a*b)^n=a^n b^n\\\\(5x^5)^2=5^2(x^5)^2\\\\25(x^5)^2\\\\\text {Apply rule: } (a^b)^c=a^{bc}\\\\25(x^5)^2=\boxed{25x^{10}}[/tex]

Answer:

36

Step-by-step explanation:

First we need to write out some of the common multiples of 4 and 6.

12, 24, 36

The number 36 is between 25 and 45 so it is our answer

Answer:

a) Area of △ABC= 78.8cm² (3 s.f.)

b) AB= 17.3cm (3 s.f.)

c) h= 9.09cm (3 s.f.)

Step-by-step explanation:

Please see the attached picture for full solution.

Answer:

I believe Isaac Newton did with a formula.

gravity(F=Gm1m2/ r2)

Hope this helps

Step-by-step explanation:

Answer:

Isaac Newton was the first man to do so.

Step-by-step explanation:

gravity(f=gm=1m2/ r2)

Answer:

88

Step-by-step explanation:

hello,

we need to replace x by 6 and y by -10 so it comes

3*(6)-7*(-10)

= 18 + 70 = 88

hope this helps

Answer:

Given,

X=6

y=-10

[tex]3x - 7y \\ = 3 \times x - 7 \times y \\ = 3 \times 6 - 7 \times ( - 10) \\ = 18 - ( - 70) \\ = 18 + 70 \\ = 88[/tex]

Hope this helps...

Good luck on your assignment..

Answer: C, It stays the same.

Step-by-step explanation: If you simplify the ratio (the fraction) by canceling the t's, you get 2/1 or 2:1. This means that no matter the value of the variable t, the value of the expression will stay the same.

Answer:

3b + 3c

Step-by-step explanation:

hope this helps you

Answer:

3(c+b)

Step-by-step explanation:

3(b+c) is essentially 3 times B+ 3 times c

and 3(c+b) is 3 times c + 3 times B

THE CORRECT ANSWER IS OPTION ( B )

Answer: 0.0013684

Step-by-step explanation:

Given the following :

Probability (p) = 49% = 0.49

Number of selected adults (n) = 30

Find the probability that exactly 23 use their smartphone.

The problem is abive can be solved using the binomial probability function.

Binomial probability :

P(X = x) = [n! / x! (n-x)!] * P^x * (1 - P)^(n-x)

At x = 23

P(X = 23) = [30! / 23! (30-23)!] * P^23 * (1-0.49)^(30-23)

P(X = 23) = [30! / 23! (7)!] * 0.49^23 * (0.51)^7

P(X =23) = (2035800) × 6.72203E−10

= 0.0013684

Answer:

78.375 miles per hour = R

Step-by-step explanation:

D= RT

The miles are 313.5 which is D and the time is 4 hours

313.5 = R * 4

Divide each side by 4

313.5/4 = R

78.375 miles per hour = R

Answer:

The found values are:

μ = 8

σ = 2

Step-by-step explanation:

Following data is given in the question:

p = 0.5

n = 16

Consider that it follows binomial distribution:

For binomial distribution, the mean is the product or probability 'p' and and the sample size 'n' :

μ = p · n

μ = 0.5 · 16

μ = 8

For binomial distribution, the standard deviation is the square root of product of sample size 'n' and the probabilities 'p' and 'q'.

σ = √(n·p·q)

where q = 1 - p = 1 - 0.5 = 0.5

σ = √(16 · 0.5 · 0.5)

σ = √4

σ = 2

Answer:

hi

Step-by-step explanation:

Answer:

shane is 120 pounds and johnny is 150 pounds

Step-by-step explanation:

shane 120  and johnny gains weight 60 pounds so 120 plus 60 that is both of the together is 180  hope this helps you i think they maybe  be the same weight because together they are more  

Answer:

No, Shane will be heavier

Step-by-step explanation:

120 > 150

120 + 60= 180

180 > 150

Answer:

c forgetting income

Step-by-step explanation:

qweddcs

Answer:

Okay so he had to withdraw 28.50 from his bank account every week so that means he withdrew 142.5 that in 5 weeks

Step-by-step explanation:

Step-by-step explanation:

for number 4:

2x + 5y = -10

2x - y = 8

subtract it

6y = -18

y = 6/-18

y = -0.3

now go back to the first equation

2x + 5 x -0.3 = -10

2x -1.5 = -10

2x = -8.5

-4.25

x = -4.25, y = -0.3

hope this help

Answer:try to answer the rest on your own and if it is not clear, let me know

Step-by-step explanation:

Answer:

-64

Step-by-step explanation:

When given two points we can use the slope formula

m = (y2-y1)/(x2-x1)

   = (-7 -57)/(38-37)

    =-64/1

  = -64

Answer:

D. [tex]x=-1, y=2\frac{2}{3}[/tex]

Step-by-step explanation:

Solving for x:

2x+3y=6

Subtract 3y from both sides

2x= -3y+6

Subtract 6 from both sides

2x-6= -3y

-4x+3y=12

Subtract 3y from both sides

-4x= -3y+12

Subtract 12 from both sides

-4x-12= -3y

Combine equations:

-4x-12=2x-6

Add 4x to both sides

-12=6x-6

Add 6 to both sides

-6=6x

6x= -6

Divide both sides by 6

x= -1

Solving for y:

2x+3y=6

Subtract 3y from both sides

2x= -3y+6

-3y+6=2x

Multiply both sides by -1

3y-6= -2x

Multiply both sides by 2

6y-12= -4x

-4x+3y=12

Subtract 3y from both sides

-4x= -3y+12

-3y+12= -4x

Combine equations:

6y-12= -3y+12

Add 3y to both sides

9y-12=12

Add 12 to both sides

9y=24

Divide both sides by 9

y= [tex]2\frac{2}{3}[/tex]

Answer:

x=−1,y=2  

3

2

​

Step-by-step explanation:

x=-1,y=2 2/3

Answer:

A, B, and C

Step-by-step explanation:

By substituting each of the ordered pairs into the equation you can determine that A, B and C all satisfy the equation.

Answer:$140 for the train ride

$84 for the museum

Step-by-step explanation:

28×5

28×3

All the students + you = 28

If not, try 27×5 and 27×3

Answer:

Step-by-step explanation:

There are two values to find and add together.

o The admission cost for the Museum

o The admission cost for the Train Ride

Let's make some equations.

x=number of people

Museum: 3x=total cost for Museum (m)

Train Ride: 5x=total cost for Train Ride (t)

m+t= total money spent

Now, let's replace the values.

Museum: 3(27)=$81

Train Ride: 5(27)=$135

$81+$135=$216 for the Train Ride and visit to the Museum.

Hope this helps!

-Emma

Answer:

In order to give the same value for money as Tim's idea, Jane has to reduce the price by 25%

Step-by-step explanation:

The given  parameters are;

Cost of each box of breakfast cereal = 3 pounds

Amount of cereal in each box of breakfast cereal = 160 g

160 g of cereal = 100%

25% of one box of cereal = 25% of 160 g = (25/100)×160 g= 40 g

Given that Jane wants her idea to give the same value of money as Tim's idea, we have;

160 g of cereal costs 3 pounds

1 g of cereal will cost 3/160 pounds

40 g of cereal will cost 40*3/160 = 3/4 pounds

Therefore, the percentage 3/4 pound is of 3 pounds = [tex]\dfrac{\frac{3}{4} }{3} \times 100 = 25 \%[/tex]

Which gives, Jane has to reduce the price by 25% to give the same value for money as Tim's idea.

To give the same value of money as Tim's idea, she need to reduce the price by 20%.

Given that:

Cost of one box of breakfast cereal is 3 pounds.

Weight of 1 box of cereal is 160g.

Tim's idea is to put 25% more cereal.

Let Jane's idea is to reduce price by x pounds such that the value of the item is same as that after applying Tim's idea.

Value in case of Tim's idea:

[tex]160g + \dfrac{160 \times 25}{100} \: \: in \: \: 3 \: pounds\\\\200g \: \: in \: \: 3 pounds\\1g \: \: in \: \: \dfrac{3}{200} \: pounds[/tex]

Value in case of Jane's idea:

[tex]160g \: \: in \: \: (3-x) \: pounds\\\\1g \: \: in \: \: \dfrac{(3-x)}{160} \: pounds\\[/tex]

Since values have to stay same, thus we have:

[tex]\dfrac{3}{200} = \dfrac{3-x}{160}\\\\\dfrac{12}{5} = 3-x\\\\5x = 3\\\\x = \dfrac{3}{5}\\\\x = 0.6 \:pounds[/tex]

To calculate percentage, we can do as follows:

[tex]\begin{aligned}percentage &= \dfrac{x \times 100}{3}\\&= \dfrac{60}{3}\\&= 20\end{aligned}[/tex]

Thus,  to give the same value of money as Tim's idea, she need to reduce the price by 20%.

Learn more here:

https://brainly.com/question/8011401