what is the answer x2 = 400.

Answer:

Step-by-step explanation:

you have to solve for x i think

Answer: SOLVE FOR X !

Step-by-step explanation:

Answer:

basically just multiply the fractions by a common number until you have whole numbers, then solve like normal

Step-by-step explanation:

Answer:

f(x)= (x+2)²

= x²+4+2x

then f(3) = 3²+4+2*3

= 9+4+6

add up the sum and here's your ans

Answer:

f − 1 (x ) = x/6 + 5/ 6

Step-by-step explanation:

Answer:

Hi there!

The domain is:

20<=x<=40

Step-by-step explanation:

18$ per hour

x is hours worked

The domain is:

20<=x<=40

This says that:

x=>20

x<=40

Which fits the problem!

Hope this helps

Answer:

yes, these ratios are proportional.

Step-by-step explanation:

yes they are! proportional ratios are like equivalent fractions.

10/12 is equal to 5/6

15/18 is also equal to 5/6

Answer:

[tex]\frac{5}{2}[/tex]

Step-by-step explanation:

For this situation we have the equation [tex]m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex], where each variable represents a coordinate (e.g. in this case 4 could be [tex]y_{1}[/tex]). So first, let's define which coordinates will be the values of these variables:

(3,4): [tex]x_{1}, y_{1}[/tex]

(5,9): [tex]x_{2}, y_{2}[/tex]

Now we need to replace each variable with its given value: [tex]m = \frac{9-4}{5-3}[/tex]

And then do the subtraction to simplify: [tex]m=\frac{5}{2}[/tex]

Therefore, the slope of the line that passes through the points (3,4) and (5,9) is [tex]\frac{5}{2}[/tex].

Answer:

$150

Step-by-step explanation:

A garden table and a bench together will cost $600. The actual values of the garden table and the bend are not given, but we know that the cost of a garden table will cost three times more than the bench.

Let [tex]x[/tex] = the cost of the bench.

Again, since the cost of the garden table is three times the cost of the bench ([tex]x[/tex]), we can represent the garden table as three times [tex]x[/tex] ([tex]3x[/tex]). These two terms will equal $600 when added, so let's formulate an equation:

[tex]3x+x=600[/tex]

Combine like terms:

[tex]4x=600[/tex]

Divide both sides of the equation by the coefficient of [tex]x[/tex], which is [tex]4[/tex]:

[tex]x=150[/tex]

_

Check your work by substituting [tex]150[/tex] into the original equation:

[tex]3(150)+(150)=600[/tex]

[tex]450+150=600[/tex]

[tex]600=600[/tex]

Our answer is correct!

Answer:

its B

Step-by-step explanation:

x + 11 ft

Step-by-step explanation:

x² + 22x + 121 ft² = area of square

x² + 11x + 11x + 121 ft² = side²

x(x + 11) + 11(x + 11) ft² = side²

(x + 11)(x + 11) ft² = side²

(x + 11)² ft² = side²

x + 11 ft = side²

Answer:I think it’s b

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

Because 84% out of 50 is 42

Answer:

C=7(p)

Step-by-step explanation:

Answer:

c=7p

p=pounds

c=costs

Answer:

a. Please find attached the required scatter plot

b. The minimum temperature in the data set is 67°F

c. The maximum temperature in the data set is 106°F

d. The vertical shift for the data set is 67°F

e. The amplitude 19.5 °F

f. The period is 12 months, the frequency = 1/12 months

h. The sine function equation that models the data set is 19.5·sin(π·t/6 - π/2) + 86.5

i. After the second and before the third month or after the ninth and before the 10th month

Step-by-step explanation:

The equation for the sinusoidal variation of temperature with time can be presented as follows;

y = A·sin(Bt + C) + D

Where;

A = The amplitude = (The Maximum value - The minimum value)/2

The amplitude = (106 - 67)/2 = 19.5°F

B = 2·π/(The period) = 2·π/12 = π/6

t = The time in months

C = The phase shift = -π/2

D = The midline = (The Maximum value + The minimum value)/2 = (106 + 67)/2 = 86.5 °F

The equation that models the data = 19.5·sin(π·t/6 - π/2) + 86.5

When the temperature is 82°, we have;

82 = 19.5·sin(π·t/6 - π/2) + 86.5

82 - 86.5 = 19.5·sin(π·t/6 - π/2)

-4.5°F = 19.5·sin(π·t/6 - π/2)

sin⁻¹(-4.5/12) = π·t/6 - π/2

-0.3844  = π·t/6 - π/2  

-0.2329 = π·t/6 - π/2  

t = 2.55 or 12 - 2.55 = 9.44

Which is either after the second and before the third month or after the ninth and before the 10th month.

In this exercise we have to use the function knowledge to calculate the temperature that is requested in each alternative, so we have to:

a. The answer is in the scatter plot  

b. The minimum is 67°F

c. The maximum is 106°F

d. The vertical shift is 67°F

e. The amplitude 19.5 °F

f. The frequency is 1/12 months and the period is 12.

h. The sine function equation that models the data set is [tex]19.5sin(\pi t/6 - \pi /2) + 86.5[/tex]

i. After the second and before the third month or after the ninth and before the 10th month

The equation for the sinusoidal variation of temperature with time can be presented as follows;

[tex]y = Asin(Bt + C) + D[/tex]

Where;

The equation that models the data is given by:

[tex]19.5sin(\pi t/6 - \pi/2) + 86.5[/tex]

When the temperature is 82°, we have;

[tex]82 = 19.5sin(\pi t/6 - \pi/2) + 86.5\\82 - 86.5 = 19.5sin(\pi t/6 - \pi/2)\\-4.5\°F = 19.5sin(\pi t/6 - \pi/2)\\sin^{-1}(-4.5/12) = \pi t/6 - \pi /2\\-0.3844 = \pi t/6 - \pi /2 \\-0.2329 = \pi t/6 - \pi /2\\t = 2.55 \ or \ 9.44[/tex]

Which is either after the second and before the third month or after the ninth and before the 10th month.

See more about temperature at brainly.com/question/15267055

Answer:

27*2/3=18

18*2/3=12

Step-by-step explanation:

I would look at the ratio of two terms

and the difference of two terms

to see if there might be a pattern

for example, 27, 18, 12

the difference between 27 and 18 is 9

the difference between 18 and 12 is 6

That is not a constant difference.

Let's try ratios:

27/18 = 1.5

18/12 = 1.5

that looks promising... we get the same ratio

so on the next bounce, expect

18/x = 1.5

maybe it's easier if we flip the ratio 1.5 (3/2) to 2/3 and so

18= 2/3 * 27

12= 2/3* 18 = 2/3 * 2/3 * 27

If we try to make a pattern

first peak = (2/3)^0 * 27

2nd peak = (2/3)^1 *27

3rd peak = (2/3)^2 * 27

Answer:

There is a common ratio of 2/3 between the height of the ball at each bounce. So, the bounce heights form a geometric sequence: 27, 18, 12. Two-thirds of 12 is 8, so on the fourth bounce, the ball will reach a height of 8 feet.

Step-by-step explanation:

Sample response :)

Answer:

39

Step-by-step explanation:

g(-5)=-7×(-5)+4=35+4=39

Answer:

g(-5) = 39

Step-by-step explanation:

g(x) = -7x + 4

g(-5) = - 7* (-5) + 4

        = 35 + 4

       = 39

Answer:

Step-by-step explanation:

18 is negative so add 18 to both sides

2x=8

so the answer would be 4 because

4 x 2= positive 8

hope that helped!!

Answer:

Step-by-step explanation:

3x > 15         2x > 12        x + 1 < 8             7x < 42

/3     /3        /2     /2            -1     -1             /7     /7

x > 5              x  > 6              x < 7                x < 6

Answer:

$975.13

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

The formula matches up with the sequence. If you want to find f2 you look to f1 which is 8. Then you subtract by 2. This means to get f1, f0 would have to be 10 because 10-2 is 8.

Answer:

r=-15/4

Step-by-step explanation:

Answer:Since both terms are perfect squares, factor using the difference of squares formula,

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

a

2

-

b

2

=

(

a

+

b

)

(

a

-

b

)

where

a

=

2

x

a

=

2

x

and

b

=

3

b

=

3

.

(

2

x

+

3

)

(

2

x

−

3

)

Step-by-step explanation:

Answer:

y=4x+23

Step-by-step explanation:

sorry  cant choose answer choice ..i ant tell which is which...bu i think you should by now....

i hope this stilled helped

Answer:

1,2 and 5

Step-by-step explanation:

hope, it will help

Answer:

1 mile: 4 minutes

Step-by-step explanation:

This problem can be expressed with a simple ratio: 2:8

Now, thankfully the numbers are even so we just need to simplify the ratio to get our answer. Ratios work like fractions in that manner. So we just need to divide both sides by 2 to get the _:4 result.

This gives us a ratio of 1:4. Therefore, Lin travelled 1 mile in 4 minutes.

Answer:

81°

Step-by-step explanation:

add both and subtract answer from 180

72+27=99

180-99=81

all 3 angles in a triangle always add up to 180°

hope this helps <3

Answer:

the greatest common factor is B - 1

Step-by-step explanation:

not 5 because 85 doesn't end with 0 or 5

not 3 because 5+0 doesn't equal a multiple of 3

not 2 because 45 is odd

not 0 because that's never an answer

Answer:

The inverse is f^-1 (x) = 6.6x + 4

Factored is 0.15 (x - 4)

I hope this helps

if you could, feel free to mark me Brainliest it would be much appreciated :D