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den301095 [7]
3 years ago
11

Let f(x) = 7x − 13. Find f−1(x)

Mathematics
1 answer:
Anika [276]3 years ago
4 0

Step-by-step explanation:

let f(x)=y

y=7x-13

y+13=7x

y+13/7=x

f-1(x)=x+13/7

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42 = -7 ( Z - 3 )<br> Z =?
ipn [44]

Answer:

-3

Step-by-step explanation:

6 0
3 years ago
If 15% of a container of milk is white milk what is the fraction of the remaining chocolate milk
Fittoniya [83]

Answer:

17/20

Step-by-step explanation:

15/100= white milk

85/100= chocolate milk

85/5=17

100/5=20

=17/20 is chocolate milk

4 0
3 years ago
If u(x)=-2x^2+3 and v(x)=1/x what is the range of (u*v)(x) **the picture should help
nasty-shy [4]
We have that
u(x)=-2 x^{2} +3 \\ \\ v(x)= \frac{1}{x}
u(v(x))=u( \frac{1}{x})=-2( \frac{1}{x} )^{2}  +3 \\ u( \frac{1}{x})= \frac{(3 x^{2} -2)}{ x^{2} }

using a graph tool
see the attached figure

The horizontal asymptote of this function is at <span>y=3</span><span>.
So,
the range of this function is from </span><span>(−∞,3<span>)</span></span>

5 0
3 years ago
Read 2 more answers
What is -2(3x+12y-5-17x-16y+4) simplified?
CaHeK987 [17]
28x + 8y + 2 is the simplified version.
7 0
3 years ago
Read 2 more answers
David is an enthusiastic cyclist. He uses an app on his phone to track each of his cycling sessions below is shown some informat
andrew11 [14]

The required diagram is attached in the picture below :

Answer:

15.05 miles

2 :09:12

5 hours 19 minutes 18 seconds

Step-by-step explanation:

Given :

28/4/18:

Time : 1 :03 : 25

Fastest mile = 02 : 25

Distance = 15.05 miles

03/5/18:

Time : 2:06: 41

Fastest mile = 02 : 53

Distance = 28.70 miles

08/5/18:

Time : 2 :09:12

Fastest mile = 02 : 45

Distance = 26.39 miles2

1.) shortest distance cycled :

From the data:

15.05 < 26.39 < 28.70

Shortest distance cycled = 15.05 miles

The longest the cycled:

1 :03 : 25 < 2:06: 41 < 2 :09:12

Longest = 2 :09:12

Total cycling time :

1 :03 : 25 + 2:06: 41 + 2 :09:12

(1 + 2 + 2)= 5 hrs

(03 + 06+ 09) = 18 minutes

(25 + 41 + 12) = 78 seconds = 1 minute 18 seconds

18 minutes + 1 minute = 19 minutes

Total = 5 hours 19 minutes 18 seconds

7 0
3 years ago
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