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3 years ago

Which is the range of the function f(x) 1/7(9)x?

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

5 0

Answer:

Range of f(x) = 1/7(9)^x is all real numbers greater than 0.

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Apply the properties of operations to find an equivalent expression for finding the total cost of the clothes.

levacccp [35]

Answer:

Total cost of the clothes = 4x + 2y

Total cost of the clothes = 2y + 4x

B. Total cost of the clothes = 6x + 4y

Total cost of the clothes = 4y + 6x

Step-by-step explanation:

Meredith bought 4 T-shirts and 2 pairs of pants. If x is the cost of one T-shirt and y is the cost of one pair of pants, she’ll have to multiply the number of T-shirts by x and the number of pants by y to find the total cost of the clothes.

Write an expression for finding the total cost of the clothes?

Apply the properties of operations to find an equivalent expression for finding the total cost of the clothes?

B. Write an expression for finding the total cost of the clothes if Meredith bought 6 T-shirts and 4 pairs of pants. Also write an equivalent expression for that expression?

Let

x = cost of one T-shirt

y = cost of one pair of pants,

Total cost of the clothes = 4x + 2y

Equivalent expression for finding the total cost of the clothes?

Switch the cost of T-shirt and cost of one pair of pants

Total cost of the clothes = 2y + 4x

B. Total cost of the clothes = 6x + 4y

Equivalent expression for finding the total cost of the clothes?

Total cost of the clothes = 4y + 6x

6 0

3 years ago

Read 2 more answers

×1.4=0.4845 first missing number <br>

Alenkinab [10]

Answer:

the answer is x=1.21125

4 0

3 years ago

a remote control car costs $60. it is reduced to $45 in the sale. by what percentage was the price reduced

Naddika [18.5K]

Answer:

25%

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

How do we do this please help thank u

murzikaleks [220]

Answer:

95%.

Step-by-step explanation:

That would be (3.42 * 100) / 3.60

= 95% (95 percent).

Percent means ' per hundred'.

8 0

3 years ago

Read 2 more answers

1.What are the zeros of the polynomial function?

Lorico [155]

Let's to the first example:

f(x) = x^2 + 9x + 20

Ussing the formula of basckara

a = 1
b = 9
c = 20

Delta = b^2 - 4ac

Delta = 9^2 - 4.(1).(20)

Delta = 81 - 80

Delta = 1

x = [ -b +/- √(Delta) ]/2a

Replacing the data:

x = [ -9 +/- √1 ]/2

x' = (-9 -1)/2 <=> - 5

Or

x" = (-9+1)/2 <=> - 4
_______________

Already the second example:

f(x) = x^2 -4x -60

Ussing the formula of basckara again

a = 1
b = -4
c = -60

Delta = b^2 -4ac

Delta = (-4)^2 -4.(1).(-60)

Delta = 16 + 240

Delta = 256

Then, following:

x = [ -b +/- √(Delta)]/2a

Replacing the information

x = [ -(-4) +/- √256 ]/2

x = [ 4 +/- 16]/2

x' = (4-16)/2 <=> -6

Or

x" = (4+16)/2 <=> 10
______________

Now we are going to the 3 example

x^2 + 24 = 14x

Isolating 14x , but changing the sinal positive to negative

x^2 - 14x + 24 = 0

Now we can to apply the formula of basckara

a = 1
b = -14
c = 24

Delta = b^2 -4ac

Delta = (-14)^2 -4.(1).(24)

Delta = 196 - 96

Delta = 100

Then we stayed with:

x = [ -b +/- √Delta ]/2a

x = [ -(-14) +/- √100 ]/2

We wiil have two possibilities

x' = ( 14 -10)/2 <=> 2

Or

x" = (14 +10)/2 <=> 12
________________

To the last example will be the same thing.

f(x) = x^2 - x -72

a = 1
b = -1
c = -72

Delta = b^2 -4ac

Delta = (-1)^2 -4(1).(-72)

Delta = 1 + 288

Delta = 289

Then we are going to stay:

x = [ -b +/- √Delta]/2a

x = [ -(-1) +/- √289]/2

x = ( 1 +/- 17)/2

We will have two roots

That's :

x = (1 - 17)/2 <=> -8

Or

x = (1+17)/2 <=> 9

Well, this would be your answers.

7 0

4 years ago