1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
e-lub [12.9K]
3 years ago
8

Is (-8,7), (0,1), (2,-6), (2,3), (7,9) a function? What’s the domain and range?

Mathematics
1 answer:
Juliette [100K]3 years ago
7 0
No it is not a function because the 2 repeats and for it to be a function none of the x values can repeat.

The domains are -8, 0, 2, 2, 7 (when it asks for domain it is asking for the x values)

The ranges are 7, 1, -6, 3, 9 (when it asks for range it is asking for the y values)
You might be interested in
If y varies directly with x when y=1/3 and x = 12, find x if y is 4.
Nikitich [7]

Answer:

x = 144

Step-by-step explanation:

y α x

we introduce a constant 'k' when changing from α to =.

i.e y = kx

y = ⅓ when x = 12

Meaning, ⅓ = k * 12

⅓ = 12k

k = ⅓ ÷ 12

k = 1/36

If y = 4, x = ?

using the equation y = kx

4 = (1/36)x

x = 4 ÷ (1/36)

x = 4 * 36

x = 144

6 0
3 years ago
Identify the stem: 16<br> A. 1<br> B. 6<br> C. 7<br> D. 16
Virty [35]
1 is the answer. You put the places in a chart, stem and leaf plot I think its called, look in up up like for another example because it/s been awhile since I learned this 
8 0
3 years ago
A light bulb consumes 3600 watt-hours per day. How long does it take to consume 18900 watt-hours?
Pie

Answer

5 days and six hours or 126 hours

5 0
3 years ago
Read 2 more answers
Andrew
PilotLPTM [1.2K]
Let's say Bailey takes "b" days to paint it.

and Andrew takes "a" days to paint the same house.

now, Andrew is 6 times faster than Bailey, therefore, if Andrew takes "a" days to do it, Bailey takes then "6a" days, or b = 6a.

now, the year they worked together, they finished it in 7 days.

so, after 1 day then, they have only done 1/7 of the whole work.

and Andrew for one day, has done 1/a of the house, whilst Bailey has done 1/b of the house or 1/(6a).

\bf \stackrel{\textit{Andrew's rate}}{\cfrac{1}{a}}+\stackrel{\textit{Bailey's rate}}{\cfrac{1}{b}}=\stackrel{\textit{1 day of work}}{\cfrac{1}{7}}&#10;\\\\\\&#10;\cfrac{1}{a}+\cfrac{1}{6a}=\cfrac{1}{7}\impliedby &#10;\begin{array}{llll}&#10;\textit{let's multiply all by }\stackrel{LCD}{42a}\textit{ to toss the}\\&#10;denominators&#10;\end{array}

\bf 42a\left( \cfrac{1}{a}+\cfrac{1}{6a} \right)=42a\left( \cfrac{1}{7} \right)\implies 42+7=6a\implies \cfrac{49}{6}=a&#10;\\\\\\&#10;\stackrel{days}{8\frac{1}{6}}=a&#10;\\\\\\&#10;\textit{how many days will it take Bailey then?}\quad b=6a&#10;\\\\\\&#10;b=6\cdot \cfrac{49}{6}\implies b=\stackrel{days}{49}
6 0
3 years ago
What’s the value of x? and what’s the measure of angel JHK?
enot [183]

Answer:

x = 14

JHK =  21

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

3x-21 = x+7

Subtract x from each side

3x-x -21 = x+7-x

2x-21 = 7

Add 21 to each side

2x-21+21 = 7+21

2x = 28

Divide by 2

2x/2 =28/2

x = 14

JHK = 3x-21 = 3(14) -21 = 42-21 = 21

3 0
2 years ago
Read 2 more answers
Other questions:
  • Downsizing is a strategy that
    7·1 answer
  • Simplify,, Explantion if possible
    11·2 answers
  • Q#4:
    15·1 answer
  • Which equation can pair with y=3x-2 to create a consistent and independent system?
    13·2 answers
  • Please answer ASAP..........
    5·1 answer
  • What is the perimeter of a square with an area of 324 cm2?
    12·1 answer
  • Estimate: -√82<br> A. -9, 0<br> B. -9, 9<br> C. -9<br> D. 9
    7·1 answer
  • Identify the function in which y varies directly with x.
    8·1 answer
  • A box has a length of 6 centimeters, a width of 4 centimeters, and a height of 5
    8·1 answer
  • Which expression is equivalent to 3 3/7?<br> 0 24 = 7<br> O 13 = 7<br> 0 30 = 7<br> O I don't know.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!