3
x < -5
x + 4
f(x) =
x2 – 3x, -5 x4 – 7,
x > 0
Find f(-2)
f(-2) =
P

Answer:

Step-by-step explanation:

you need to plug in

Answer:

evaluate

Step-by-step explanation:

um duh

but I hope I helped in some way

Answer:

13.1 cm² (nearest tenth)

Step-by-step explanation:

Use the sine rule for area of a triangle with 2 sides and an included angle (SAS).

Sine rule for area

[tex]\textsf{Area ABC}=\dfrac12ab \sin C[/tex]

(where [tex]a[/tex] and [tex]b[/tex] are the side lengths and [tex]C[/tex] is the included angle)

Given:

[tex]\implies \textsf{Area}=\dfrac12\cdot 8 \cdot 7 \cdot\sin (28\textdegree)[/tex]

               [tex]=13.14520376...[/tex]

               [tex]= 13.1 \textsf{ cm}^2 \textsf{ (nearest tenth)}[/tex]

Use sine rule

Area:-

[tex]\\ \sf\longmapsto \dfrac{1}{2}Base\times Height sin\theta[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{2}(8)(7)sin28[/tex]

[tex]\\ \sf\longmapsto 28sin28[/tex]

[tex]\\ \sf\longmapsto 13.1cm^2(Approx)[/tex]

Answer:

a^8/b^12 --> a.k.a answer d

Step-by-step explanation:

when there's an exponent outside of a parenthesis of exponents inside, you're basically just going to multiply them together. not add or anything

2 * 4 = 8

3 * 4 = 12

and we cant divide or do anything else with the product b/c a and b are both different variables and we don't know what they are

Answer: 1/4/7=1/28

You’re welcome good luck to whatever you’re working on. Give brainliest please for my answer.

Answer:

Bar graph

Step-by-step explanation:

Hopes this helps

Answer:

da te

Step-by-step explanation:

The circumference is πd, and the diameter is 10, so the circumference is 10π. All sides of a square are equal, so the length of each side is 10π/4, which is 2.5π.

The length of each side of the square is 2.5π  

Answer:

○ B. [tex]\displaystyle 69\:inches\:to\:75\:inches[/tex]

Explanation:

The Empirical Rule states that sixty-eight percent of the population will be within one standard deviation of the mean in height. Therefore, you perfourm the operations below:

[tex]\displaystyle \boxed{75} = 3[1] + 72 \\ \boxed{69} = -3[1] + 72[/tex]

I am joyous to assist you at any time.

Find upper range and lower range by adding and subtracting standard deviation respectively.

Lower range

Upper range:-

Option B is correct

Answer:

B

Step-by-step explanation:

the values of t from the table are 7 times the corresponding values of s , so

t = 7s

Answer:

a=2x-b

Step-by-step explanation:

[tex]x=\frac{a+b}{2}\\\\\frac{a+b}{2} = x\\ a+b = 2x\\a= 2x-b\\[/tex]

Answer:

C. X8

Step-by-step explanation:

correct me if im wrong

Answer:

See below.

Step-by-step explanation:

The answer would be x^8.

When multiplying exponents, you add them, rather than actually multiplying.

-hope it helps

Answer:

22 in

Step-by-step explanation:

volume of a right prism = area of base x height

Given:

⇒ 352 = 16 × height

⇒ height = 352 ÷ 16

⇒ height = 22 in

Height be x

[tex]\\ \rm\rightarrowtail 16x=352[/tex]

[tex]\\ \rm\rightarrowtail x=352/16[/tex]

[tex]\\ \rm\rightarrowtail x=22[/tex]

Answer:

If Sarah has three times as many pencils as Mike she has 3  times the number of pencils Mike has which is equivalent to 3 * m. That means Mike has m pencils and Sarah has 3m pencils. they have m + 3m pencils. The expression would be total:  m + 3m.

Step-by-step explanation:

Answer:

78

Step-by-step explanation:

Answer:

7(b+8) = 5

Hope this helps!

Answer:

19,2000

Step-by-step explanation:

By rewriting the linear function we will see that the correct option is A.

"an increasing line that passes through (0, 4)"

Here we have the linear function:

2y  = 4x + 8

We can rewrite it to get the function in the slope-intercept form:

y = (4x + 8)/2

y = 2x + 4.

So, the slope is positive, this implies that we will have an increasing line.

We also can see that the y-intecept is 4, this means that the line passes through the point (0, 4).

From that, we can conclude that the correct option is A.

If you want to learn more about linear functions, you can read:

https://brainly.com/question/4025726

Answer:

Step-by-step explanation:

x₁ = 0   ; y₁=0  &

x₂ = 1    ; y₂=2

Slope =[tex]\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

         [tex]=\dfrac{2-0}{1-0}\\\\\\=\dfrac{2}{1}\\\\\\= 2[/tex]

Slope = 2

Step-by-step explanation:

Length=l

Width=w

l=3w

Perimeter of a rectangle=2(l+w)

2(l+w)=88

l+w=44

3w+w=44

4w=44

w=11

l=3w=33

Answer:

6.5 hours per day

$321.75

Step-by-step explanation:

Given Kirsten worked 39 hours in 6 days:

Number of hours worked in one day = 39 ÷ 6 = 6.5 hours

Given Kirsten is paid $8.25 per hour:

Total pay for 39 hours = 39 × 8.25 = $321.75

Answer:

The value of x is 4.8. The length of BC is 14.6.

Step-by-step explanation:

I combined the two expressions 3x+1 and 2x+5 to 5x+6=30

1. I subtracted 6 from 6 and 30 in the equations.

2. I was left with 5x=24

3. I then divide 5 from 5x and 24

4. I got x=4.8

To get the length of BC

2x+5

1. I multiplied 2×4.8

2. I got 9.6

3. I then add 5 to 9.6

4. I finally get the answer 14.6 which is the length of BC

Answer:

[tex]\overline{BC}=14.6[/tex]

Step-by-step explanation:

we know that

[tex]\overline{AC}=\overline{AB}+\overline{BC}[/tex]

so

[tex]30=3x+1+2x+5\\\\30=(3x+2x)+(1+5)\\\\30=(3+2)x+(1+5)\\\\30=5x+(1+5)\\\\30=5x+6\\\\5x+6=30\\\\5x+6-6=30-6\\\\5x+0=30-6\\\\5x=30-6\\\\5x=24\\\\\frac{1}{5}(5x)=\frac{1}{5}(24)\\\\\frac{5}{5}x=\frac{1}{5}(24)\\\\\frac{1}{1}x=\frac{1}{5}(24)\\\\x=\frac{1}{5}(24)\\\\x=\frac{24}{5}\\\\x=4.8[/tex]

and now we solve for BC

[tex]\overline{BC}=2x+5\\\\\longrightarrow x=4.8\longleftarrow \\\\\overline{BC}=2(4.8)+5\\\\\overline{BC}=9.6+5\\\\\overline{BC}=14.6[/tex]

so that's our answer

Hi!

The vertex is the highest or lowest point on a graph, also known as the maximum/minimum. It is the turning point for the parabola.

In this case, it has a maximum, because the parabola points downward.

Using the graph, we can see the vertex is at point

(3, 4)

Answer:

(3,4)

Step-by-step explanation:

The vertex is a point that is the maximum or minimum of the parabola. (3,4) is the highest point on that parabola so it's a vertex

Answer:

5:12

Step-by-step explanation:

you can't simplify your answer so it will be

5:12

Answer:

Step-by-step explanation:

[tex]\frac{x^{2}-9 }{x+3}[/tex]

you factorize x²-9 to get (x+3)(x-3)

that would now be [tex]\frac{(x+3)(x-3)}{x+3}[/tex]

x+3 would cancel out the other x+3

then you would be left with (x-3)

Answer:

Hello there buddy I’m MrsNobody and I’m here too help you

Your answer is

x+3)(x−3)x+3

Cancel the common factor.(x+3)(x−3)x+3(x+3)(x-3)x+3

Divide x−3x-3 by 11.

Answer;x−3

Hope it’s helps you buddy

I’m sorry if my answer is wrong

Have a nice day

Good luck with your homework

Step-by-step explanation:

~MrsNobody

Answer:

16

Step-by-step explanation:

1. Use acronym PEMDAS (parentheses, exponents, multiplication/division, addition/subtraction) to determine the order of operations.

2. Since there are no parentheses or exponents, multiply first:

4*5=20

3. Now, the expression reads 20+-4.  Adding a negative is the same as subtracting that value.

20-4=16

Hope this helps!!

Answer:

The speed would be 60kph

60/60=1

Step-by-step explanation:

60x24=1,440

It would at a speed of 1,440km per day.

In a year it would go 525,600 km.

Every nanosecond it would go 0.0001 cm.

Answer:

12 boys

Step-by-step explanation:

i took the 7 that represents the girls and multiplied by 3 to get 21 (how many girls are there)

So then i took 4 multiplied 3 and thats how i got the answer 12 (brainllist Plz!)

Answer:

Enter any decimal value and get the number rounded to its nearest thousandths in ... Step 2: Now, look at the digit, which is next to the thousandth place.

Step-by-step explanation:

use the above picture as a reference and solve

Answer:

36°

Step-by-step explanation:

So, the angle measure of x+15 is 36 because x = 21

The angle measure of 3x-9 is 54, but this is bigger than the one before.

So, the smallest angle is 36

Please give the other person brainliest cause they deserve it more than me.