To rule How to find f(7) ?

Answers

Answer 1
You would need to see the rest of the equation to plug in 7 for x. Treat it as y=equation and replace any x with 7.
Answer 2
1+6 this is correct hehe

Related Questions

I need to know WHAT THE ANSWER IS Please?

Answers

Answer:

3

Step-by-step explanation:

When you multiply .3 by 10, you will end up with the answer of three. There are three more ounces in the jar.

given the piece wise function show below, select all that are true​

Answers

Answer:

Option (C) and (D)

Step-by-step explanation:

Given piecewise function is,

f(x) = 2x, x < 1

        5, x = 1

        [tex]x^{2}[/tex], x > 1

Option (A),

x = 5 means x > 1

So the function will be,

f(x) = [tex]x^{2}[/tex]

f(5) = (5)²

     = 25

Therefore, f(5) = 1 is not correct.

Option (B),

x = -2 means x < 1

f(x) = 2x will be applicable.

f(-2) = 2(-2) = -4

Therefore, f(-2) = 4 is not correct.

Option (C)

For x = 1,

f(1) = 5

Therefore, f(1) = 5 is the correct option.

Option (D)

x = 2 means x > 1 and the function defined will be,

f(x) = x²

f(2) = 2²

     = 4

Therefore, f(2) = 4 will be the correct option.

Options (C) and (D) will be the answer.

What is the 10% of 20% of 30%?
Ans 1= 0.006%
2=0.06%
3=0.6%
4=6%​

Answers

30%=0.3
20%=0.2
10%=0.1

0.3*0.2*0.1=0.006

Answer is 1

Answer:

3=0.6%

Step-by-step explanation:

(10% of 20%) of %30

30% of 0.02

0.006=0.6%

Is the expression 2 • 4' equal to the expression 8x?Explain your answer

Answers

Answer:

Yes

Step-by-step explanation:

If your expression is 2*4 it will equal 8 and if your still not sure divide 8 by 4 and your answer is 2 or 8 by 2 and you'll get 4.

Evaluate: |6|+|-2∣. Answer value

Answers

Answer:

8

Step-by-step explanation:

Absolute value of 6 is 6. Absolute value of -2 is 2. 6+2 is 8.

Answer:

8

Step-by-step explanation:

[tex]\left|6\right|+\left|-2\right|\\\\\mathrm{Apply\:absolute\:rule}:\quad \left|a\right|=a,\:a\ge 0\\\\\left|6\right|=6\\=6+\left|-2\right|\\\mathrm{Apply\:absolute\:rule}:\quad \left|-a\right|=a\\\\\left|-2\right|=2\\=6+2\\\\Simplify\\=8[/tex]

Mrs. Atkins pays $ 1,800 for a new
refrigerator washer, and dryer.
The refregerator cost $ 250 more
than the washer. The dryer costs
half as much as the washer.
How much does the washer cost?
The was her cost:_____

Answers

A: $620

Explanation:
first set your variables:
refrigerator: r
washer: w
dryer:d

next create your equation:
1800= r+w+d

now use what you know to solve the problem. you know how much the refrigerator and dryer cost, so create an equation based off that knowledge.

r = 250 + w
d = 1/2w

now substitute those equations for the variables:
1800 = 250 + w + 1/2w + w
(r) (d)

combine like terms:
1800 = 250 + 2w + 1/2w

1800 = 250 + 2.5w

subtract 250 from both sides:
1550 = 2.5w

divide by 2.5:
w= 620

if you want to check, plug in the w value and see if everything equals 1800:
1800 = 250 + 620 + 1/2(620) + 620
1800 = 870 + 310 + 620
1800 = 1800

it is correct, hope this helps :))

kelly bought some stuffed animals for 6.49 each she also got a box fo chocolate for 8.32 she paid a total of 27.79 to write an equation to find how many stuffed animals kelly purchased

Answers

Answer:

3

Step-by-step explanation:

She only bought one chocolate so you will subtract 8.32 from her total, 27.79, when you do that you will get 19.47.  You do that so you can know the total of the stuffed animals by them self.  Then all you have left in the total is her stuffed animals so you divide 19.47 by 6.49, when you do that you get three, so that means that she got three stuffed animals.

Step-by-step explanation:

thats the answer right there

13 - (-6) subtracting integers

Answers

Answer:

19

Step-by-step explanation:

According to exponent rules, when we divide the same base we _______ the exponents.

A. Multiply B. Add

C. Divide D. Subtract

Answers

Answer:

D

Step-by-step explanation:

Subtract the exponents

The answer is D, subtract the exponent in the problem! Maths is an amazing subject for individuals to succeed and with questions like these, students will learn to continue to grow and develop their mindset.

-| -8 | |-(-8) are they equal ? Or which one is more ?

Answers

Answer:

-| -8 |  is less than |-(-8)|

Step-by-step explanation:

-| -8 | =-8

|-(-8)| =8

they are not equal

-| -8 |  is less than |-(-8)|

Domain and range function graph plz help asap

Answers

Answer:

Domain and range: All possible real numbers.

Step-by-step explanation:

Since both end contains arrows, that means that it keeps going on and on.

A jar contains 2 caramels, 7 mints, and 16 dark chocolates. What is the probability of choosing a dark chocolate, eating it and then choosing a caramel?

Answers

Answer: dark chocolate 16/25 carmel 1/12

Step-by-step explanation:

there are 16 dark chocolates

to find the probability you have to add up all of your numbers

2+7+16= 25

so the probablity of drawing a dark chocolate is 16/25

repeat the steps but subtract 1 from the total since you ate one you didn't put it back.  

so the probability of drawing a carmel is 2/24 or simplified 1/12

Ito washes 7 cars in 3 hours. Joan
washes 9 cars in 4 hours. Who
washes cars at a faster rate?

Answers

Answer:

Ito

Step-by-step explanation:

Make them to their closest common multiple which is twelve.

Next times 7 by 4 as 3*(4) is 12

Then time 9 by 3 as 3*(4) is 12

7*4=28

9*3=27

Therefore ito washes at a faster rate

Answer:

ITO

Step-by-step explanation:

ITO

He can wash 7 cars in 3 hours.

a) 3 x 60 min = 180 minutes

b) 180\7 = 25.71 minutes per car

JOAN

She can wash 9 cars in 4 hours

a) 4 x 60 = 240 minutes

b) 240\9 = 26.66 minutes per car

Ross and Gabby sold boxes of cookies for their soccer team fundraisers.Ross sold b boxes of cookies Gabby sold 35 boxes of cookies .Together they sold 69 boxes of cookies .Witch equation models the scenario?
a)35b=69
b)35-b=69
c)b+35=69
d)35/b=69

Answers

Answer:

the answers c

Step-by-step explanation:

Answer:c

Step-by-step explanation:

Gabby's 35 boxes plus Ross's b amount of boxes equals the 69 boxes

If m∠A = m∠B and m∠A + m∠C = ∠D, then
m∠B + m∠C = ∠D.

Which property is shown?

reflexive property
substitution property
symmetric property
transitive property

Answers

Answer:

Substitution Property

Step-by-step explanation:

The change from the first equation to the final equation is m∠A has been replaced by m∠B. In other words, m∠B was substituted for m∠A.

Answer:

Substitution property

Step-by-step explanation:

Have a nice day!

What is the inverse of the function

Answers

Answer:

1/2x -1/2

Step-by-step explanation:

f(x) = 2x+1

y = 2x+1

Switch x and y

x = 2y+1

Solve for y

Subtract 1

x-1 = 2y+1-1

x-1 =2y

Divide by 2

(x-1)/2 = 2y/2

1/2x -1/2 = y

The inverse is 1/2x -1/2

Answer:

[tex]\huge\boxed{h(x) = \frac{1}{2} x - \frac{1}{2}}[/tex]

Step-by-step explanation:

[tex]f(x) = 2x+1[/tex]

Put f(x) = y

[tex]y = 2x + 1[/tex]

Interchange x and y

[tex]x = 2y+1[/tex]

Solve for y

[tex]x = 2y+1[/tex]

Subtracting 1 to both sides

[tex]x-1 = 2y[/tex]

Dividing both sides by 2

[tex]\frac{x-1}{2} = y \\\\ OR\\\\ y = \frac{x-1}{2}[/tex]

Put y = h(x)

[tex]\bold{h(x) = \frac{1}{2} x - \frac{1}{2}}[/tex]

Write an algebraic expression that models the word phrase. the product of 2 and the sum of a number x and 16

Answers

Answer:

2(x+16)

Step-by-step explanation:

it says product of 2 means 2 times

then it says sum of x and 16 so thy are asking for the sum of x and 16 then multiplied by 2

so the ans is 2(x+16)

Rewrite the following expressions using the Additive Inverse Property -21-62, -78-(-8), 100-500

Answers

Answer:

62/78*( 1 6/8)

= 31/39*( 1 6/8)

= 31/29*( 1 3/4 )

= 31/39* 7/4

Multiply the numerator together and the denominator together

= 217/156

Step-by-step explanation:

LIKE IT PLS AND 5 STARS

Two graduated cylinders, one filled with water to 17 milliliters and one with water and a key filled to 25 milliliters. Calculate the volume of this irregular solid to the nearest cubic centimeter. What is the volume of the key?

nvm its 8 cm3

Answers

Answer:

its 8 cm^3

Step-by-step explanation:

got it right edge 2020

Answer: the answer is 8

Step-by-step explanation:

Just did it and got it correct

In the drawing above two rugby players start 41 meters apart at rest. Player 1 accelerates at 2.2 m/s^2 and player 2 accelerates at 1.7 m/s^2. How much time elapses before the players collide?

Answers

Answer:

The time that elapses before the players collide is 4.59 secs

Step-by-step explanation:

The distance between the two players is 41 meters. Hence, they would have total distance of 41 meters by the time they collide.

We can write that

S₁ + S₂ = 41 m

Where S₁ is the distance covered by Player 1 before collision

and S₂ is the distance covered by Player 2 before collision

From one of the equations of kinematics for linear motion,

[tex]S = ut[/tex] + [tex]\frac{1}{2} at^{2}[/tex]

Where [tex]S[/tex] is distance

[tex]u[/tex] is the initial velocity

[tex]a[/tex] is acceleration

and [tex]t[/tex] is time

Since the players collide at the same time, then time spent by player 1 before collision equals time spent by player 2 before collision

That is, t₁ = t₂ = t

Where t₁ is the time spent by player 1

and t₂ is the time spent by player 2

For player 1

[tex]S[/tex] = S₁

[tex]u[/tex] = 0 m/s ( The player starts at rest)

[tex]a[/tex] = 2.2 m/s²

Then,

S₁ = [tex]0(t)[/tex] + [tex]\frac{1}{2} (2.2)t^{2}[/tex]

S₁ = [tex]1.1t^{2}[/tex]

[tex]t^{2} = \frac{S_{1} }{1.1}[/tex]

For player 2

[tex]S[/tex] = S₂

[tex]u[/tex] = 0 m/s ( The player starts at rest)

[tex]a[/tex] = 1.7 m/s²

Then,

S₂ = [tex]0(t)[/tex] + [tex]\frac{1}{2} (1.7)t^{2}[/tex]

S₂ = [tex]0.85t^{2}[/tex]

[tex]t^{2} = \frac{S_{2} }{0.85}[/tex]

Since the time spent by both players is equal, We can  write that

[tex]t^{2}[/tex] = [tex]t^{2}[/tex]

Then,

[tex]\frac{S_{1} }{1.1} = \frac{S_{2} }{0.85}[/tex]

[tex]0.85S_{1} = 1.1S_{2}[/tex]

From, S₁ + S₂ = 41 m

S₂ = 41  - S₁

Then,

[tex]0.85S_{1} = 1.1 ( 41 -S_{1} )[/tex]

[tex]0.85S_{1} = 45.1 - 1.1S_{1}[/tex]

[tex]0.85S_{1} + 1.1S_{1} = 45.1 \\1.95S_{1} = 45.1\\S_{1} = \frac{45.1}{1.95} \\S_{1} = 23.13 m[/tex]

This is the distance covered by the first player. We can then put this value into [tex]t^{2} = \frac{S_{1} }{1.1}[/tex] to determine how much time elapses before the players collide.

[tex]t^{2} = \frac{S_{1} }{1.1}[/tex]

[tex]t^{2} = \frac{23.13 }{1.1}[/tex]

[tex]t^{2} = 21.03\\t = \sqrt{21.03} \\t = 4.59 secs[/tex]

Hence, the time that elapses before the players collide is 4.59 secs

What is the area of a rectangle with a dimension of 5 cm and 3/4 cm? PLEASE EXPLAIN AND I WILL MARK YOU BRAINLIEST.

Answers

Answer:

3.75 cm^2

Step-by-step explanation:

Area of a rectangle = Length x Width.

If we are given that the length is 5 cm and width is 3/4 cm ( you could convert this to a 0.75 if you want to as well ) we can plug this in:

Area = 5 cm x 3/4 cm

Solving for Area we get:

Area = 3.75 cm^2.

Answer:

[tex] \boxed{ \bold{ \huge{ \bold{ \boxed{ \sf{3.75 \: {cm}^{2} }}}}}}[/tex]

Step-by-step explanation:

Length ( l ) = 5 cm

Width ( w ) = 3/4 cm

To find : Area of a rectangle

Finding the area of a rectangle having length of 5 cm and width of 3/4 cm

[tex] \boxed{ \sf{area \: of \: rectangle = \: l \times w}}[/tex]

plug the values

[tex] \dashrightarrow{ \sf{5 \times \frac{3}{4} }}[/tex]

To multiply one fraction by another, multiply the numerators for the numerator, and multiply the denominator for its denominator.

[tex] \dashrightarrow{ \sf{ \frac{5 \times 3}{4} }}[/tex]

[tex] \dashrightarrow{ \sf{ \frac{15}{4} }}[/tex]

Divide 15 by 4

[tex] \dashrightarrow{ \sf{3.75 \: {cm}^{2} }}[/tex]

Hope I helped!

Best regards! :D

21 – 8(w + 3) + 3 + 7w

Answers

Answer:  -w

Step-by-step explanation:

21 – 8(w + 3) + 3 + 7 w

y^2+3y-10=0 please solve

Answers

The Answer is: y=2,5

Answer:

y = -5

y = 2

Step-by-step explanation:

Find 2 factors of -10 that add up to 3

This will be 5 and -2

So, we can factor this:

y² + 3y -10 = 0

(y + 5)(y - 2) = 0

Set each factor equal to 0 and solve:

y + 5 = 0

y = -5

y - 2 = 0

y = 2

So, the solutions are y = -5 and y = 2

don't mind the writings in pen, i didn't know what i was doing... PLS HELP ASAP​

Answers

Answer:

(a) <AED=50°

(b) <DAB=65°

(c) <BCD=45°

(d) Reflex <ABC=225°

Step-by-step explanation:

(a) 180-65-65=50

(b) 180-115=65 (ADC is 115)

(c) 180-135-45

(d) Reflex <ABC 360-135=225

Consider x+4=x+8 . What values could be substituted for x to make this a true number sentence?

Answers

Answer:

There is no value of x that will make this true

Step-by-step explanation:

x+4=x+8

Subtract x from each side

x-x+4=x-x+8

4 = 8

This is never true so there is no solution

An online music club sells compact discs for $13.95 each plus $1.95 shipping and handling per order. If Maria’s total bill was $85.65, how many compact discs did Maria purchase?

Answers

Answer:

she purchased 6 compact discs

Step-by-step explanation:

13.95 × 6 + 1.95= 85.65

Answer:

6

Step-by-step explanation:

Help please also give an explanation

Answers

Answer:

The answer is option A

Step-by-step explanation:

[tex] \frac{a + bc}{wd + f} = g[/tex]

First of all cross multiply

That's

g( wd + f ) = a + bc

Multiply the terms at the left side of the equation

We have

gwd + fg = a + bc

Send fg to the right side of the equation

That's

gwd = a + bc - fg

Divide both sides by dg to make W stand alone

[tex] \frac{gwd}{dg} = \frac{a + bc - fg}{dg} [/tex]

We have the final answer as

[tex]w = \frac{a + bc - fg}{dg} [/tex]

Hope this helps you

How does the area of the scale drawing where 1 centimeter represesnts 10 miles compare to the area of a the drawing where 1 centimeter represents 30 miles?

Answers

Answer:

This means that 1cm on the map means 10miles on actual land so is it the same for 30miles

That is 1cm on map 30 cm on land

what is the value of m (5m+100)

Answers

o is the value of m i think


Which polynomial is in standard form?

1 + 2x - 8x + OX
O 2x2 +6x3-9x+ 12
6x3 + 5x-3x2 + 2
2x3+4x2 - 7x+5

Answers

Answer:

last option is correct because the standard form of polynomial means the arrangement of power in descending order

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