i need help plz:((((((((((

I Need Help Plz:((((((((((

Answers

Answer 1

Answer:

a) [tex]y=\frac{28}{75}(x-1900)+47.3[/tex]

b) 86.5 years

Step-by-step explanation:

All values are rounded to 2 decimal places

a) We can find line by using y =mx+b

[tex]y=mx+b\\m=\frac{y^{2}-y^{1} }{x^{2}-x^{1}}\\m=\frac{69.7-47.3}{1960-1900} \\m=\frac{22.4}{60} \\m=\frac{28}{75}\\c=y-intercept\\y-intercept=47.3\\y=\frac{28}{75} (x-1900)+47.3[/tex]

Therefore the line of best fit is [tex]y=\frac{28}{75}(x-1900)+47.3\\[/tex]

b) We can do this by using the formula of the best fit line to estimate the life expectancy of someone born in 2005

[tex]y=\frac{28}{75}(x-1900)+47.3\\y=\frac{28}{75}(2005-1900)+47.3\\y=\frac{28}{75}\times105+47.3\\y=86.5[/tex]

Therefore the estimated life expectancy of someone born in 2005 is 86.5 years

PS. Please give brainliest answer this was a lot of working out


Related Questions

Whitney rode her skateboard at a constant speed. She rode 1 mile in 10 minutes. Which of these equations represents the amount of time, t, in minutes that it takes her to ride the distance, d, in miles?
A. t=d10 B. t=d+10 C. t=10d D. d=10t

Answers

Answer:

C. t = 10d

Example:

If i rode the bike for 3 miles then

t = 10(3)

Then,

t = 30

So, the bike was rode for 30 minutes

What is 3 divided by 5/6

Answers

Answer:

3.6

Step-by-step explanation:

3÷5/6=3×6/5=18/5=3.6

Answer:

3.6

Step-by-step explanation:

or infraction form 3 3/5

Line a: (0,4) and (6,0)
Line b: (4,−1) and (6,2)
The slope of Line a is Answer
The slope of Line b is Answer

Answers

Answer:

Line a slope is -4/6

Line b slope is 3/2

Step-by-step explanation:

This answer is correct, because i did it on edge and go 100% (trust me!)

Which of the binomials below is a factor of this trinomial? X2 + 8x+16
A. X-4
B. X-8
C. X+4
D. x+8​

Answers

C. x + 4

( x + 4 )( x + 4 )

x^2 + 4x + 4x + 16

x^2 + 8x + 16

Which of the following numbers is not a perfect square?
a. 49
b. 121
c. 125
d. 144

Answers

Answer:

            C. 125

Step-by-step explanation:

49 = 7×7           ← a perfect square

121 = 11×11           ← a perfect square

144 = 12×12          ← a perfect square

but:

125 = 5×5×5 = 5√5×5√5 and 5√5 is not integer so 125 is not a perfect square

Answer:

C. 125

Step-by-step explanation:

source: trust me bro

will give brainlist

Answers

Answer:

y=24  x=33

Step-by-step explanation:

Example: ⇒

y

=

k

x

to find k use the given condition

y

=

24

when

x

=

8

y

=

k

x

k

=

y

x

=

24

8

=

3

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

2

2

y

=

3

x

2

2

−−−−−−−−−−−−−−

when

x

=

10

then

y

=

3

×

10

=

30

4) Solve Ax + By = C, for y

Answers

Answer:Ax + By = C

-ax -ax

-------------------

By = -Ax + C

--- ------------

B B

--------------------

y = -Ax + C

----------

B

Step-by-step explanation:

Answer:

y=c/b-ax/b

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Mrs. Reyes asked 3 girls and 4 boys to help with a project. She had each student make 8 paper airplanes. Drag steps to show how to find the total number of airplanes.

Answers

Answer:

56

Step-by-step explanation:

Given that:

Number of girls = 3

Number of boys = 4

Each student makes 8 paper airplanes.

To find:

The total number of airplanes = ?

Solution:

There can be two ways to find the total number of airplanes.

Method 1:

Keep on adding the number of airplanes for each student.

There are a total of 3+4 = 7 number of students.

First student makes = 8 airplanes

Second student makes = 8 airplanes

Third student makes = 8 airplanes

Fourth student makes = 8 airplanes

Fifth student makes = 8 airplanes

Sixth student makes = 8 airplanes

Seventh student makes = 8 airplanes

Total number of airplanes = 8 + 8 + 8 + 8 + 8 + 8 + 8 = 56

Method 2:

Simply multiply number of airplanes each student makes with the number of students.

i.e. 8 [tex]\times[/tex] 7 = 56

At the coffee shop the price of a price of a cup of coffee increased from 1.20 to 1.44 what is the percent increase in the cost of coffee

Answers

Answer:

20%

Step-by-step explanation:

1.2*1.2=1.44

41.501÷4.7=?
Please help meee

Answers

Answer:

8.83

Step-by-step explanation:

there you go i hope it helps

Answer:

8.83

Step-by-step explanation:

2 (x - 2/3) = 0

solve for x​

Answers

x would equal 2/3 or in decimal form, 0.6 repeated

Answer:

x = 2/3

Step-by-step explanation:

2(x-2/3)=0

2x-1 1/3=0

2x=1 1/3

Devide both sides by 2

x=2/3

PLS HELP WITH THE QUESTION IN THE PICTURE!!!

Answers

Answer:

D

Step-by-step explanation:

Interesting question.  The wording is a bit awkward. I think you have to assume the base is a square and each succeeding base is also a square.

So the first thing to do is to add the bases together.

30*30 + 23*23 + 16*16 + 9*9

Don't add these -- not yet.

Now take the height into consideration

6 *(30*30 + 23*23 + 16*16 + 9*9)

The point is that you only have to multiply by 6 once.

6*(900 +  529 + 256 + 81)

6*(1766)

10596 cubic inches

The answer is D

Why do you always need to create an equation of a line

Answers

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept. If you know two points that a line passes through, this page will show you how to find the equation of the line.

Estimate the solution of the system of equations. Write the answer as an ordered pair.

Answers

Answer:

Solution of the given system of equations is (1, 2.5)

Step-by-step explanation:

From the graph attached,

Two intersecting lines represent the system of equations.

And the solution of the system of equations is a common point where these lines intersect.

Graph shows both the line are intersecting each other at (1, 2.5).

Therefore, solution of the given system of equations will be (1, 2.5).

simple question just answer correctly to get brainleist and 10 pts! :)

Answers

Answer:

C is the answer.

A brainlyest would really help out!

please help me out with this​

Answers

Answer:

d. The Pup Palace Kennel is never cheaper than Ngyuen's Kennel

Step-by-step explanation:

The points (2.1, -4.2) and (2.5, -5) form
a proportional relationship. What is the slope of
the line that passes through these two points?

Answers

Answer:

m = -2

Step-by-step explanation:

hsavajgsbjxxhisbvzjxb

The slope of the line that passes through the points (2.1, -4.2) and (2.5, -5) that form a proportional relationship is: -2.

Recall:

The slope (m) of a line can be calculated using the formula:

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Given the points that a line passes through are:

(2.1, -4.2) and (2.5, -5)

To calculate the slope of the line that passes through both points, let,

[tex](2.1, -4.2) = (x_1, y_1)\\\\(2.5, -5) = (x_2, y_2)[/tex]

Plug in the values into the formula:

Slope (m) = [tex]\frac{-5 -(-4.2)}{2.5 - 2.1} = \frac{-0.8}{0.4} = -2[/tex]

Therefore, the slope of the line that passes through the points (2.1, -4.2) and (2.5, -5) that form a proportional relationship is: -2.

Learn more here:

https://brainly.com/question/18047340

factor x to the fourth-5x squared+4

Answers

Answer:

Work shown below!

Step-by-step explanation:

[tex]x^{4}-5x^{2} +4[/tex] = [tex]0[/tex]

[tex]A[/tex] = [tex]x^{2}[/tex]

[tex]A^{2} -5A+4[/tex] = [tex]0[/tex]

[tex](A-1)(A-4)[/tex] = [tex]0[/tex]

[tex](x^{2}-1)(x^{2} -4) =0\\(x-1)(x+1)(x-2)(x+2)=0[/tex]

x - 1 = 0

Add 1 to both sides;

x = 1

x + 1 = 0

Subtract 1 from both sides;

x = -1

x - 2 = 0

Add 2 to both sides;

x = 2

x + 2 = 0

Subtract 2 from both sides;

x = -2

Square root -80 by using imaginary unit I

Answers

you already got the answer but if you ever need the answer instantly for any math question use mathaway its a really good app and will gove you the answer and step by step explanation

A, B, and C are points on the circumference of a circle, centre 0. AOB is a diameter of the circle. Prove that angle ACB is 90° You must not use any circle theorems in your proof.

Answers

Answer:

Kindly refer to explanation.

Step-by-step explanation:

Given that:

A,B and C are 3 points on circumference of circle with centre O.

AOB is diameter.

Kindly refer to the attached image.

To prove:

[tex]\angle ACB = 90^\circ[/tex]

Solution:

Let [tex]\angle A = x[/tex] and [tex]\angle B = y[/tex].

Construction: Join point  A with centre O.

Considering [tex]\triangle AOC[/tex]:

Side AO = OC because both are the radius.

Angles opposite to equal sides in a triangle are equal.

Therefore, [tex]\angle ACO=\angle A=x[/tex]

Considering [tex]\triangle BOC[/tex]:

Side BO = OC because both are the radius.

Angles opposite to equal sides in a triangle are equal.

Therefore, [tex]\angle BCO=\angle B=y[/tex]

[tex]\angle ACB = \angle ACO + \angle BCO = x+y[/tex] ...... (1)

Now, in [tex]\triangle ABC:[/tex]

Using angle sum property of triangle:

[tex]\angle A + \angle B + \angle ACB =180^\circ\\\Rightarrow x+y+x+y=180^\circ\\\Rightarrow 2(x+y)=180^\circ\\\Rightarrow x+y=90^\circ[/tex]

By equation (1):

[tex]\angle ACB = 90^\circ[/tex]

Hence proved.

Cydney is proving that perpendicular lines have slopes that are opposite reciprocals. She draws line p and labels two points on the line as (0, a) and (b, 0). Enter the answers, in simplest form, in the boxes to complete the proof. The slope of line p is . Rotate line p 90° counterclockwise about the origin to get line q. The labeled points on line p map to (−a, 0) and ( , ) on line q. The slope of line q is . The slopes of the lines are opposite reciprocals because the product of the slopes is .

Answers

Answer:

Slope of p  =    -a/b

 

(0, b)  is on line  q

 

Slope of q  =  ( b - 0) / (0 - -a)  =   b/a

 

Product of the slopes  =  (-a/b) (b/a)  =  (-ab) /(ab)  =  -1

I hope this helps (: Have a whimsical day! lol

One cylinder has a volume that is 8 Centimeters cubed less than StartFraction 7 over 8 EndFraction of the volume of a second cylinder. If the first cylinder’s volume is 216 Centimeters cubed, what is the correct equation and value of x, the volume of the second cylinder?
StartFraction 7 over 8 EndFraction x + 8 = 216; x = 182 centimeters cubed
StartFraction 7 over 8 EndFraction x minus 8 = 216; x = 196 centimeters cubed
StartFraction 7 over 8 EndFraction x + 8 = 216; x = 238 centimeters cubed
StartFraction 7 over 8 EndFraction x minus 8 = 216; x = 256 centimeters cubed

Answers

Answer:

D. StartFraction 7 over 8 EndFraction x minus 8 = 216; x = 256 centimeters cubed

Step-by-step explanation:

Equation for the volume and solution:

7/8x - 8 = 216 7/8x = 216 + 87/8x = 224x = 224*8/7x = 256 cm³

Correct option is D.

Answer:

D. StartFraction 7 over 8 EndFraction x minus 8 = 216; x = 256 centimeters cubed

I REALLY NEED HELP QUICK!

Answers

Answer:

y=1/2x-5

Step-by-step explanation:

From the picture you can see that (0, -5) is a point on the function and that (2, -4) is another point. Using these you can find the slope of the function with the equation

[tex](y_{2} -y_{1})/(x_{2}-x_{1} )[/tex]

We can substitute in the points so it looks like

[tex](-4--5)/(2-0)[/tex]  or  [tex]1/2[/tex] which is the slope of the function

Now, since the y-intercept is (0, -5) on the graph, the b part in the slope-intercept form of the equation would be -5, leaving us with the equation y=1/2x-5

evaluate g (x) = 4- 3x when x = -3, 0, and 5

Answers

Answer:

13, 4, -11

Step-by-step explanation:

g(-3) = 4-3(-3) = 4+9 = 13

g(0) = 4-3(0) =4-0 = 4

g(5) = 4-3(5) = 4-15 = -11



Help me pleaseeeeee!!

Answers

Answer:

A

Step-by-step explanation:

Help...... ._. ........ Me

Answers

Answer would be b) 72. You find this by using the pythagorean theorem.

Take the square root of: (97^2 - 65^2).


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

Answers

Answer:

3i√5 is the awnser so it is c

Step-by-step explanation:

i am sure of it

which ratios below is equivalent 10 2:1 ? Select all that apply A- 6:4 B-8:4 C- 10:5 D- 6:12 E- 6-3

Answers

Answer:

B C E

Step-by-step explanation:

(:

Solve for the line, Thank you!

Answers

I think 0,5





Explain

Show your work and write an expression using the following criteria:

Divide 4,200 by a multiple of 10
The quotient is also a multiple of 10

Answers

Answer:

420

Step-by-step explanation:

edge

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