#1-7

10 points!!!!

please help :)

Answer:

the number of dreams that include people you know out of 28 is 21

Step-by-step explanation:

Here is the complete question:

It is believed that about [tex]\frac{3}{4}[/tex] of our dreams  involve people that we know.

So the expression to describe the number of  dreams that feature people you know if you have "d" dreams is:

[tex]\frac{3}{4} d[/tex]

Now using the above expression we can predict number of dreams that include people you know out of 28. Here 28 represents number of dreams i.e. "d". So expression becomes:

[tex]\frac{3}{4} (28)[/tex]

Now simplify the above expression:

[tex]\frac{3}{4} (28)[/tex] = [tex]\frac{3*28}{4}[/tex] = [tex]\frac{84}{4}[/tex] = [tex]21[/tex]

Hence the number of dreams that include people you know out of 28 is 21

Answer:

  examine the next digit and increase the number accordingly, before dropping the digits of no interest.

Step-by-step explanation:

You round any number by looking at the digit in the place to the right of the one you want to round to. If it is 5 or more, you add 1 to the number in the place you're rounding to, and drop (or zero) all digits to the right of that.

If you want to round this to tenths, you observe that the hundredths digit is 7, which is more than 4. So you add 1 tenth and drop the hundredths digit:

  99.87 ≈ 99.9 . . . . rounded to tenths

If you want to round this to units, you observe that the tenths digit is 8, which is more than 4. So you add 1 unit and drop the tenths and hundredths digits.

  99.86 ≈ 100 . . . . . rounded to nearest integer

Answer: 1/2 power of 5 aight

1/2+1/2+1/2+1/2+1/2= 2 1/2

Step-by-step explanation:

1/2⁵ = 1/2 × 1/2 × 1/2 × 1/2 × 1/2 × 1/2

1/2⁵ = 1/64

Answer:

C

Step-by-step explanation:

Point (0, 1) is on the graph of the inverse function h⁻¹(x).

Given: The graph of function y = h(x).

According to the graph, the function is a straight line:

y-intercept is (c) = 2

Consider two points on the graph, y = h(x).

Let (x₁, y₁) = (0, 2) and (x₂, y₂) = (2, -2).

Now, the slope (m) of the function will be calculated as:

⇒ m = (y₂ - y₁) / (x₂ - x₁)

⇒ m = (-2 - 2) / (2 - 0)

⇒ m = -2

Now, with c = 2 and m = -2 the equation of a given line will be calculated as:

The general equation of line is:

⇒ y = mx + c

⇒ y = -2x + 2

∴  y = h(x) = -2x + 2 is the given equation of line.

Now to find the h⁻¹(x), we have to interchange the values of x and y from the function h(x) and then obtain the relation for the general equation of line.

h⁻¹(x) will be calculated as:

⇒ x = -2y + 2

⇒ x - 2 = -2y

⇒ y = (2 - x)/2

∴ y = h⁻¹(x) = (2 - x)/2

Now, we will find which point is on the graph of h⁻¹(x).

Option (A): (2, 4)

put, x = 2 in the equation y = (2 - x)/2

⇒ y = 0

⇒ (2, 0) ≠ (2, 4)

∴ (2, 4) is not the point on h⁻¹(x).

Option (B): (0, 1/2)

put x = 0 in the equation y = (2 - x)/2

⇒ y = 1

⇒ (0, 1) ≠ (0, 1/2)

∴ (0, 1/2) is not the point on h⁻¹(x).

Option (C): (0, 1)

put x = 0 in the equation y = (2 - x)/2

⇒ y = 1

⇒ (0, 1) = (0, 1)

∴ (0, 1) is the point on h⁻¹(x).

Option (D): (–5, 1)

put x = -5 in the equation y = (2 - x)/2

⇒ y = 3.5

⇒ (-5, 3.5) ≠ (–5, 1)

∴ (–5, 1) is not the point on h⁻¹(x).

Therefore, the point on the graph of the inverse function of h⁻¹(x) is (0, 1).

Learn about the Inverse Function here: https://brainly.com/question/16406473?referrer=searchResults

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Answer:

3 books per month

Step-by-step explanation:

9 books ÷ 3 months = 3 books per month :)

Answer:

32 is composite and the rest are not. Hope this helps!

Step-by-step explanation:

Answer:

C. Financing a brand new Car

Step-by-step explanation:

Financing a brand new car means that someone takes out a car loan that has to be paid over time, and that is something a spender would do because they are not saving money

Answer:

31

Step-by-step explanation:

16(3)-3(-1)+5(-4)

48+3-20

51-21

31

Answer:

i prefer substitution methon for this one

Answer:

[tex]x = -\frac{2}{21}[/tex]

hope that helped ;w;

Answer:

what im thinking is $65

Step-by-step explanation:

Answer:

When I work with function composition, I usually convert "( f o g)(x)" to the more intuitive " f (g(x))" form. This is not required, but I certainly find it helpful. In this case, I get:

(g o f )(1) = g( f(1))

This means that, working from right to left (or from the inside out), I am plugging x = 1 into f(x), evaluating f(x), and then plugging the result into g(x). I can do the calculations bit by bit, like this: Since f(1) = 2(1) + 3 = 2 + 3 = 5, and since g(5) = –(5)2 + 5 = –25 + 5 = –20, then (g o f )(1) = g( f(1)) = g(5) = –20. Doing the calculations all together (which will be useful later on when we're doing things symbolically), it looks like this:

(g o f )(1) = g( f (1))

  = g(2(   ) + 3)   ... setting up to insert the original input

  = g(2(1) + 3)

  = g(2 + 3)

  = g(5)

  = –(   )2 + 5    ... setting up to insert the new input

  = –(5)2 + 5

  = –25 + 5

  = –20

Note how I wrote each function's rule clearly, leaving open parentheses for where the input (x or whatever) would go. This is a useful technique. Whichever method you use (bit-by-bit or all-in-one), the answer is:

(g o f )(1) = g( f (1)) = –20

I just computed (g o f )(1); the composition can also work in the other order

Step-by-step explanation:

The value of a is 4.

Hence, a = 4

Here,

[tex]f(x) = (5 - x)^3 and, g(x) = a + x^2,[/tex]

and [tex]f(g(x)) = (1 - x^{2} )^3[/tex]

We have to find the value of a.

What is composite function?

Function composition is an operation that takes two functions f and g and produces a function h such that h(x) = g(f(x)).

Now,

[tex]f(x) = (5 - x)^3 and, g(x) = a + x^2,[/tex]

and [tex]f(g(x)) = (1 - x^{2} )^3[/tex]

⇒ [tex]f(g(x)) = f ( a + x^{2} )[/tex]

⇒ [tex]f ( a + x^{2} ) = ( 5 - a - x^{2} )^3[/tex]

And,

[tex]f(g(x)) = (1 - x^{2} )^3[/tex]

[tex]( 5 - a - x^{2} )^3 = ( 1 - x^{2} )^3\\[/tex]

Taking cube root both sides,

[tex]( 5 - a - x^{2} ) = ( 1 - x^{2} )\\ 5 - a - x^{2} = 1 - x^{2} \\a = 4[/tex]

Hence, The value of a = 4.

Learn more about the composite function visit:

https://brainly.in/question/14333427

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Step-by-step explanation:

Notice it is not asking for an average rate, just her current rate. Approach this like this: say she is at the 29 mile "marker." In 3 hours, she gets to the 38th mile "marker." Therefore:

38-29 = 9, so in 3 hours, she went 9 miles.

9 miles/3 hours = 3 miles per hour, which would be equal to her current rate.

Answer:

Perimeter: 14a+2b

Tickets:7x+6

Step-by-step explanation:

Perimeter: Add all the functions together

Tickets: Subtract 15x+1 by 8x-5.

Answer:

[tex]( - 4.6) + (3. - 7) = 0.6[/tex]

By the distance formula,

[tex]d = \sqrt{( x_2 - x_1) {}^{2} + (y_2 - y_1 {)}^{2} }[/tex]

Here,

[tex]x_1 = -4[/tex]

[tex]y_1 = 6[/tex]

[tex]x_2 = -7[/tex]

[tex]y_2 = 3[/tex]

Hence,

[tex]d = \sqrt{( {(-7 )+(- 4))}^{2} + {( 3 + 6)}^{2} } [/tex]

[tex]d = \sqrt{ {(-11)}^{2} + {9}^{2} } [/tex]

[tex]d = \sqrt{121+ 81} [/tex]

[tex]d = \sqrt{202} [/tex]

Answer:

∠B = 52°.

Step-by-step explanation:

Given: m∠A=(8x-4)° and m∠B=(7x+3)°. ∠A and ∠B are vertical angles.

Since ∠A and ∠B are vertical angles. So, there measure are equal.

[tex]m\angle A=m\angle B[/tex]

[tex](8x-4)^{\circ}=(7x+3)^{\circ}[/tex]

[tex]8x-4=7x+3[/tex]

[tex]8x-7x=4+3[/tex]

[tex]x=7[/tex]

Now,

[tex]m\angle B=(7(7)+3)^{\circ}[/tex]

[tex]m\angle B=(49+3)^{\circ}[/tex]

[tex]m\angle B=52^{\circ}[/tex]

Therefore, the measure of ∠B is 52°.

Answer:

-48

Step-by-step explanation:

Answer:

10,000lbs

Step-by-step explanation:

There are 2000lbs in 1 ton

So

5 x 2000 = 10000lbs

Answer:

10,000 pounds is the the correct answer

Answer:

6 terms

Step-by-step explanation:

we have

[tex]2+8+32+..+2048[/tex]

we need to identify a pattern so

from 2 to 8 what could have happened?

well you could have added 6 and get 8

so that means that to 8 you have to add 6 and get 32

WRONG

so adding is not an option

what else could have happened?

well you could have multiplied by 4 and get 8

so that means that to 8 you have to multiply by 4 and get 32

which is true

so the geometric series is

[tex]2+4(2)+4(4(2))+4(4(4(2)))+...+[/tex] what?

you can see that in the 2nd term we have 1 four, in the 3rd we have 2 fours

so we can conclude in the nth term we have n-1 fours

so the formula is

[tex]2+8+32+...+4^{n-1} *2[/tex]

so we need to determine when

[tex]4^{n-1}*2=2048[/tex]

[tex]4^{n-1}*2*\frac{1}{2} =2048*\frac{1}{2} \\\\4^{n-1}=1024[/tex]

if we factorize 4 as [tex]2^2[/tex] and 1024 as [tex]2^{10}[/tex]

we have

[tex](2^2)^{n-1}=2^{10}\\\\2^{2(n-1)}=2^{10}\\\\2^{2n-2}=2^{10}[/tex]

so we see that the bases are equal, that must mean the exponents are equal

[tex]2n-2=10\\\\2n=10+2\\\\2n=12\\\\n=6[/tex]

so there are 6 terms

Answer:

z+7

Step-by-step explanation:

use PEMDAS!

1. divide 4/4, which is 1. (z-1+8)

2. combine like terms! -1 and 8 are like terms, so add them together. (z+7)

3. after that, you have the answer!! z+7!!

Answer:

x > 1/5

Step-by-step explanation:

5 - 8x < 2x + 3

-8x < 2x -2

-8x -2x < -2

-10x < -2

x > 1/5

Answer:

[tex]27x - 15[/tex]

Step-by-step explanation:

When we apply the distributive property, we multiply all the terms inside the parentheses by the term directly outside of it.

So:

[tex]9x \cdot 3 = 27x[/tex]

[tex]-5 \cdot 3 = -15[/tex]

Putting these together, we get [tex]27x-15[/tex].

Hope this helped!

Answer:

20,136

Step-by-step explanation:

Follow My  -Tae.Nevacared 7777

Answer: 6 hours

Step-by-step explanation:

6.5x = 39

6=x

Answer:

= and [tex]\leq[/tex] and [tex]\geq[/tex]

Step-by-step explanation:

Absolute value -9 is 9, but there is a negative sign so it is -9

-9=-9

Greater than or equal to works because of the equal sign.

Less than or equal to also works because of the equal sign.

Answer:

Integers

Step-by-step explanation:

Answer:

The vertical line test is used to determine if a graph of a relationship is a function or not. if you can draw any vertical line that intersects more than one point on the relationship, then it is not a function.

Answer:

Step-by-step explanation:

x + 3 = -x - 5

2x + 3 = -5

2x = -8

x = -4

Answer: x=-4

Step-by-step explanation: first add x from both sides to turn it into 2x+3=-5. then subtract 3 from both sides for it to turn to 2x=-8. finally divide both sides by to to find x=-4