Mathematics High School

use the function below to find f(-2).
f(x)=3^x

Answers

Answer 1

hi

f(x) = 3^(x)   so  (f-2) =    3^(-2)  =  1/ 3² =    1/9

Answer 2

Answer: 1/9

Step-by-step explanation:

Related Questions

Please help. I’ll give brainliest

Answers

Answer:

x > -5

Step-by-step explanation:

Which statement is true about the equations –3x + 4y = 12 and x - y = 1?
A. The system of the equations has exactly one solution at (-8, 3).
B. The system of the equations has exactly one solution at (-4, 3).
C. The system of the equations has no solution, the two lines are parallel.
D. The system of the equations has an infinite number of solutions represented by either equation.

Answers

Answer:

b.the system of the equations has exactly one solution at(-4.3).

PLEASEEE HELPPPP ASAPPPPP

Answers

Answer:

70

Step-by-step explanation:

For f(-4)=5(2-3(-4))=5(2+12) because - times - makes +

Therefore 5x2=10 + 5x12=60

10+60=70

Mr. Ash owns a tree, which is 42 feet tall. He estimates that this tree is 75% as tall now as it will be when fully grown. How tall will the tree be when it is fully grown?

Answers

Answer:

73.5 feet

Step-by-step explanation:

The length of a tree =42 feet

Mr. Ash estimates that this tree is 75% as tall now as it will be when fully grown.

We need to find the length of the tree when it is fully grown. It means we need to find the 75% of 42 and adding 42 to it as follows :

[tex]T=75\%\times 42+42\\\\=\dfrac{75}{100}\times 42+42\\\\=73.5\ ft[/tex]

So, the tree will be 73.5 feet tall when it is fully grown.

Are the roots of equation 4x^2-4x+1=0 is imaginary

Answers

Answer:

NO

Step-by-step explanation:

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

This is the last one, can u help me

Answers

Answer:

B

Step-by-step explanation:

Answer:

B) SAS

Step-by-step explanation:

The side is marked equal, they are both 90 degrees and they share a side. Side Angle Side.

HELP please i'll give brainliest I only have until 3 to finish this

Answers

Answer:

B

Step-by-step explanation:

The ratios are 2:1

In the table it shows 4:2, 8:x, y:6, 20:z

To find if the ratios are equivalent we would need to plug in

Once plugging in answer B we get 4:2, 8:4, 12:6, 20:10 which would all equate to 2:1

Answer:

Its B

Step-by-step explanation:

Which expression is the same as 2 (4-7m)?
A) 6-9m
B)6+9m
C)8-14m
D)8+14m

Answers

Answer:

The answer would be c) 8-14m

Answer:

C: 8-14m

Step-by-step explanation:

2(4-7m) = 8 - 14m

find this by distributing the 2 into the parenthesis: 2 * 4 and 2* -7m to get 8 and -7m

PLEASE HELP!! WILL MARK BRAINLIEST :))

Answers

Answer:

It would be the third one (x, y) for all real numbers

Two parallel lines are crossed by a traversal. What is the value of h?
h=60
h=80
h=100
h=120

Answers

Answer:

h=60

Step-by-step explanation:

The angle that is 120 degrees and the angle that is h degrees are called same side interior angles

Same side interior angles are supplementary, meaning that they add to 180 degrees

To find h we can use Measures addition postulate to find the unknown value h

h+120=180

h=60


Please help with these 2 questions :(( I really will appreciate it a lot

Answers

Answer:

c

Step-by-step explanation

DO NOT  CHANGE YOU ANSWER. it is perfectly fine

pls mark brainliest

Which ones are functions and which ones aren't?

Answers

Answer:

1. A is function.

2. A, is function

3. B is function.

Step-by-step explanation:

Hope it helps.

Answer:

1) B

2) A

3) B

Step-by-step explanation:

In a function... no value can be repeated in the domain

This is especially easy to discern in graphs because of the Horizontal Line Test

y=−2x+9 write in standard form

Answers

Answer:

2 x − y = − 9

Step-by-step explanation:

I am not 100% sure but I think this is right.

Answer:

Step-by-step explanation:

2x+y=9

In isosceles ABC, AB=AC. if B=55,calculate A​

Answers

Answer:

Two base angles of an isosceles triangles are equal.

55 + 55 + a = 180  

110 + a = 180

a = 180-110

a = 70

pls help Solve for m. -7+4m+10=15-2m

Answers

Answer:

m=2

Step-by-step explanation:

Answer:

[tex]m=2[/tex]

Step-by-step explanation:

[tex]-7+4m+10=15-2m[/tex]

Isolate the variable m. Combine like terms (-7+10):

[tex]3+4m=15-2m[/tex]

Subtract 3 from both sides (inverse operations):

[tex]3-3+4m=15-3-2m\\\\4m=12-2m[/tex]

Add 2m to both sides (inverse operations):

[tex]4m+2m=12-2m+2m\\\\6m=12[/tex]

Divide both sides by 6 to isolate m (inverse operations):

[tex]\frac{6m}{6} =\frac{12}{6} \\\\m=2[/tex]

Since this cannot be further simplified, m is equal to 2.

:Done

100 % if my grade and giving brainliest if answered correctly please helppp im failing

Answers

Answer:

Hope I'm not too late for this...

(look below)

Step-by-step explanation:

For the first part:

1. b = -1, m = 2

The y-intercept (b) is the value of y when x = 0. In this case, we can see that when x = 0, y = -1 so the y-intercept is -1.

The slope was found using the equation slope (m) = (y2-y1) / (x2-x1) and two points. (Note, you can choose any two points, I just chose the first two.)

(5,9) (-2,-5)

slope = (y2-y1) / (x2-x1)

slope = (-5-9) / (-2-5)

slope = -14/-7

slope = 2

I used the same steps as shown above:

2. b = 2, m = -3

For the second part:

1. y = 2x - 1

2.y = -3x + 2

I basically plugged in the values for m and b into the equation, y = mx + b.

Graphs:

The way to graph a line is to plot at least two points and draw a line through them. You can graph it using either the equation or the table. I used the table since it is much easier to find the points that I need.

Below I have included references to what the graph should look like if you need to check your work.

The one in blue is for the equation y = 2x - 1. This should help you get a visual of what the correct graph looks like.

The one in green is for the equation y = -3x + 2.

I hope this helped!

Which equation represents a line that is perpendicular to y=x?

A.

y=2x

B.

y=−x+6

C.

y=−2x

D.

y=x+1

Answers

Answer:

B

Step-by-step explanation:

The general equation of a straight line can be represented as;

y = mx + b

where m is slope

If two lines are perpendicular, the product of their slopes will be -1

So since the slope of the first line is 1, then the slope of the second line will be -1

Out of all the options, only have its slope as -1 and this y = -x + 6 and this is our answer

1) Mark's new car can drive 725 miles in 8
hours. How many miles can Mark's car drive in
an hour? How many miles can his car drive in
3 hours?

Answers

Answer: 271 miles

Step-by-step explanation:725÷8 to find the MPH which is 90.625. Then  

multiply 90.625 by 3 which is 271.

What is the quotient?
-4/5 *2
HELP PLEASE

Answers

Answer:

The answer is 4/25 or 0.16.

Step-by-step explanation:

If the astrick is meant for a square root, then yes that is the answer.

The correct answer is 1.6.

Which inequality is represented by the number line?
PICTURE ATTACHED PLEASE HELP ME!!!

Answers

Answer:

A i think

Step-by-step explanation:

cause its gonna be more than 6- so yeah if it is right then b

Two containers P and Q are filled with different amounts of water. Each container has a small hole. The graph shows the amount of water, V milliliters, left in each container after x minutes.

Explain what the y-intercept means in this scenario.

Answers

Answer:

Step-by-step explanation:

Equation of the line for container O and container P will be in the form of,

y = mx + b

Here m = slope of the line = Change in amount of water per minute

b = y-intercept

From the graph attached,

y-intercept 'b' represents the initial amount of water in the container.

For container O, initial amount of water in the container is 1000 mL.

Similarly, initial amount in the container is 900 mL.

the sum in the form a(b+c) such that the integers band chave no common factor.
99 +33

Answers

Answer:

33(3+1)

Step-by-step explanation:

Find the GCF of 99 and 33

99=3^2•1133=3•11So the GCF is 3•11=33

Factor 33 out

33(3+1)

if there are 90 calories in 3/4 of yogurt, how many calories are in 3 cups of yogurt?

Answers

Answer:

360

Step-by-step explanation:

3 divided by 3/4=3 times 4/3=4

4 times 90=360

360

90/3 = 30

1 cup = 120 cal.

120 x 3 = 360

What is the product of (–0.5)(–1.2)(–5.22)? –9.8 –3.132 3.132 9.8What is the product of (–0.5)(–1.2)(–5.22)? –9.8 –3.132 3.132 9.8What is the product of (–0.5)(–1.2)(–5.22)? –9.8 –3.132 3.132 9.8What is the product of (–0.5)(–1.2)(–5.22)? –9.8 –3.132 3.132 9.8

Answers

Answer:

Step-by-step explanation:

1.  (–0.5)(–1.2)(–5.22)= -3.132

Answer:

B

Step-by-step explanation:

Find the Slope.
(2, 8) and (4, -3)

Answers

0.75 is the slope im pretty sure

What's 2(a-2)=3(a-5)

Answers

2a-4 = 3a-15
2a = 3a - 11
-1a = -11 , a = 11

i kinda understand this but not really and i really need the ec points.

Answers

Answer:

the c

Step-by-step explanation:

Answer: Point C

It is not a factor of 2 because 3 aint

how many cups are in 3 liters 1 L = 4.2 cups

Answers

Answer:

12.6 cups

Step-by-step explanation:

each liter has 4.2 cups so if you just multiply it by 3 you will get 12.6. cups.

12.6
there are 4.2 in each cup so just times that by 3 and you get 12.6

11/6 = 1/3 + p
(Find the common denominator first.)

Answers

Answer:

p = 3/2

Step-by-step explanation:

If E[5X - 10) = 60, what is E[X]?

Answers

Step-by-step explanation:

here,

1o

so X is equal to 10

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