HELP THIS IS DUE TOMORROW
14. Given this graph of the function f(x): Find: a. f(-4) = b. f(5) = c. f(2)= d. f(-5) = e. x when f(x) = 0
​

Step-by-step explanation:

a

[tex]area \: of \: circle = \pi{r}^{2} \\ = 22 \div 7{ \times (35 \div 2)}^{2} \\ = 3.14 \times 306.25 \\ = 961.625 {cm}^{2} [/tex]

Answer:

4a + 7 = SIMPLIFIED

4a = -7

a= -1.75 ANSWER OF EXPONENT IF NEEDED

Answer:

A. the set of all points in a plane that are the same distance from each other surrounding a given point called the center. hope this helps

Step-by-step explanation:

- Zombie

The statement best defines a circle is A. the set of all points in a plane that are the same distance from each other surrounding a given point called the center.

A circle is defined as a shape consisting of all points in a plane that are given the same distance from a given point called the center.

A circle can be characterized by its center's location and its radius's length.

The statement best defines a circle is A. the set of all points in a plane that are the same distance from each other surrounding a given point called the center.

Learn more about circle here:

https://brainly.com/question/10165274

#SPJ5

Answer:

Step-by-step explanation:

9) a = 2 ; b = 6

a) a + b =  2 + 6 = 8

b) b - a = 6 - 2 = 4

c) ab = 2 * 6 = 12

10) c = 12 ; d = 4

a) c ÷ d = 12 ÷ 4 = 3

b) c + d = 12 + 4 = 16

c) c - d = 12 - 4   = 8

Answer:

Step-by-step explanation:

A is certainly true. If you put 30 into your calculator, you get factions for the cube root and square root. True

B is true. 5^2 = 25 Twenty five is made up of 2 fives.

C is a perfect cube. 10 * 10  * 10 = 1000. But it is not a perfect square. False.

D 64 is a perfect cube. (It is also a perfect square).

E false 16 is a perfect square. It is not a perfect cube

True Statements

A B D

9514 1404 393

Answer:

  b = 20/7

Step-by-step explanation:

The slope of the first line can be found by solving for y:

  by = -5x +6 . . . . . . add 6-5x

  y = -5/b +6/b . . . . . divide by b

The slope is -5/b.

The slope of the second line can be found by solving for y:

  7y = 4x +7

  y = 4/7x +1 . . . . . . divide by 7

The slope is 4/7.

For the lines to be perpendicular, the product of these slopes must be -1:

  (-5/b)(4/7) = -1

  -20/(7b) = -1 . . . . simplify

  b = 20/7 . . . . . . . multiply by -b

The lines will be perpendicular when b = 20/7.

Answer:

3604

Step-by-step explanation:

68 km/hr

53 hours = 68*58 (if this helped pls give brainliest ty!)

Answer:

Speed = 68 km/h

Time = 53 hours

Distance = Speed × Time

Distance = 68 × 53

Distance = 3,604 km

Problem 61

Refer to this link where I solved the problem earlier

https://brainly.com/question/24517029

===========================================================

Problem 62

T(n) = nth triangular number

T(n) = n(n+1)/2 = 0.5n(n+1)

That squares to (0.5n(n+1))^2 = 0.25n^2(n+1)^2

The next triangular number after T(n) is

T(n+1) = 0.5(n+1)(n+1+1) = 0.5(n+1)(n+2)

That squares to 0.25(n+1)^2(n+2)^2

Notice how each squared result has 0.25 and (n+1)^2 found buried in them.

Let's say A = 0.25(n+1)^2

That would mean the first result 0.25n^2(n+1)^2 becomes An^2

The second result 0.25(n+1)^2(n+2)^2 becomes A(n+2)^2

Let's add those to see what happens

An^2+A(n+2)^2

An^2+A(n^2+4n+4)

A(n^2+n^2+4n+4)

A(2n^2+4n+4)

0.25(n+1)^2*(2(n^2+2n+2))

0.5(n+1)^2(n^2+2n+1+1)

0.5(n+1)^2((n+1)^2+1)

0.5k(k+1)

We see that the result is a triangular number where k = (n+1)^2

This shows that adding the squares of consecutive triangular numbers gets us another triangular number.

A few examples

===========================================================

Problem 63

I'll borrow some of the ideas from problem 62

We found that after squaring the nth and (n+1)th triangular numbers, we got An^2 and A(n+2)^2 respectively. We let A = 0.5(n+1)^2

Subtract those expressions to get...

A(n+2)^2 - An^2

A(n^2+4n+4)-An^2

A(n^2+4n+4-n^2)

A(4n+4)

4A(n+1)

4*0.5(n+1)^2*(n+1)

(n+1)^3

This proves that the difference between the squares of consecutive triangular numbers is a perfect cube, aka a cube number.

A few examples:

===========================================================

Problem 64

Refer to this link where I solved the problem earlier

https://brainly.com/question/24517029

Hello!

Are you in algebra?

Here is how to solve and graph.

First, look for the slope and y-intercept of your equation.

y = - 1/2r-6

The y intercept is, -6

The slope is -1/2

the variable r, is another way to represent x, as it is just a variable.

now that you have all that information, plot -6 on the graph, -6 should be on the y- axis.

from that point, move down one space and move right two space. complete this step multiple times.

Now please look at the photo, and Here's what the graph should look like.

Answer:

Step-by-step explanation:

15

Answer:

Tessa's expression is false because -7 times -4 is positive 28, not -28.

Bernette's expressionis false because you must distribute the -7 before subtracting 7 from 2 (peMdas)

Lucy's expression is true because she correctly distributed the -7 to each of the terms in the parentheses and used PEMDAS.

2-21x+28

The equivalent expression for the given expression is 2-21x+28.

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

Tessa:

2-7(3x-4)=2-21x-28

Tessa's equivalent expression is wrong. Because -7×(-4)=28 not -28.

Bernette:

2-7(3x-4)=-5(3x-4)

Bernette's equivalent expression is wrong. Because, you can not 2 and 7, since 7 is multiplied to the term 3x-4

Lucy:

2-7(3x-4)=2-21x+28

Lucy's equivalent expression is correct.

Therefore, the equivalent expression is 2-21x+28.

To learn more about an equivalent expression visit:

https://brainly.com/question/28170201.

#SPJ2

Answer:

Step-by-step explanation: please do mark as brainliest

Answer:

Step-by-step explanation:

10-512                                                                                                                                                      = -502                                                                                                                                         = -2.251

Answer:

128.6 pounds

Step-by-step explanation:

130 4/5 - 5.2 + 3

=, 128.6pounds

Answer:

sleeping the floor and vacuuming

Answer:

546

Step-by-step explanation:

Answer:

a.14

Step-by-step explanation:

2+2 =4

7+7= 14

I hope it helpful

Answer: i d k

Step-by-step explanation:

[tex]\frac{1}{2}(4x-8)=\frac{1}{2}\cdot4x-\frac{1}{2}\cdot8=2x-4[/tex]

Hope this helps :)

[tex]\frac{1}{2}(4x-8)=\frac{1}{2}\cdot4x-\frac{1}{2}\cdot8=\\\\=\frac{4x}{2}-\frac{8}{2}=\boxed{2x-4}[/tex]

Answer:

-14

Step-by-step explanation:

!

Answer:

-14

Step-by-step explanation:

(-6)(2) + (-8/4) =

-12 - 2 =

-14

Answer:

Quantative data

Answer:

16

Step-by-step explanation:

Each could be watched in the places of 1,2,3 or 4. So each movie has 4 places it could be. Since you rented 4 movies you would do 4x4 which equals 16.

The answer is 156.00

Answer:

helpful links below for the first time

Step-by-step explanation:

BCD = 180- 100 = 80

the opposite angles of a parallelogram are of equal measure

SO DAB = X = 80

The sum of all parallelogram angles = 360

360 - 160 = 200

200 equals the measure of angle ADC + ABC

ABC = ADC

200 = 2ABC

ABC = 100

ADB = DBC = 30

Y = 100 - 30 = 70

another way to find y is using the rule that says that the sum of the triangle ADB angles = 180

180 = 80 + 30 + y

y = 70

Answer:

the correct answer is 21:4.

Step-by-step explanation:

the original ratio is 84:16 but you divide 84 by 4 and 16 by 4 and you get 21:4

[tex]\boxed{\sf Mean=\dfrac{Sum\:of\:terms}{No\:of\:terms}}[/tex]

[tex]\\ \sf\longmapsto Mean=\dfrac{12+19+38+52+55}{5}[/tex]

[tex]\\ \sf\longmapsto Mean=\dfrac{176}{5}[/tex]

[tex]\\ \sf\longmapsto Mean=35.2[/tex]

answer is option B 480 because it is getting reduced by 4 times at Evey step

Answer:

30*4=120

120*4=480

answer=480

Step-by-step explanation:

Answer:

For both sets of data, the median is equal to the mean.

The interquartile range (IQR) is greater for M's classes than J's classes.

Step-by-step explanation:

J's Classes:

23, 25, 27, 28, 32

Median: 27

Mean: 27

Mean Absolute Deviation: 2.4

Interquartile Range: 3

M's Classes:

20, 24, 26, 29, 31

Median: 26

Mean: 26

Mean Absolute Deviation: 3.2

Interquartile Range: 5

Answer:

7/30

Step-by-step explanation:

5/6-3/5 ,the LCM of denominators 6 and 5 is 30 ,6 denominator divided by 30 the result from the LCM times 5 the numerator is =25, 5 denominator divided by 30 the result from the LCM times 3 is =18 ,then subtract 25 from 18 giving you 7 ,then 7/6 or seven divided by six is one whole number, one over six