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Semenov [28]
3 years ago
11

Find the x-intercept of f(x) = 8x - 4.

Mathematics
1 answer:
k0ka [10]3 years ago
3 0

To find x intercept ,

let f(x) = y

therefore y= 8x - 4

in solving for x intercept, me plug in y = 0

thus

8x - 4 =0

solving for x

8x = 4

dividing through by 8

8x/8 =4/8

x =4/8

x =1/2

therefore, the x intercept is 1/2

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Five siblings have a combined age of 195 years. The oldest is 13 years older than the youngest Marc the middle child Anne is fiv
lidiya [134]
This is what someone else answered when someone else asked it. I can't explain it better than this.





So five sibbllings ages are repressented as
a,b,c,d,e
let's have a as youngest and e as oldest in that order
total ages are 195 so
a+b+c+d+e=195
oldest is 13 older thatn youngest
e=13+a
middle child anne (c) is 5 years younger than josie who is an unknow position, we know that she could be d or e or oldest or second oldest
the other 2 are 6 years appart
b and d ar e 6 years appart or b and e are 6 years apart? or is josie the oldest, or second oldest?

second oldes is 42 so
d=42

2 scenarios
if josie is oldest, then see AAAA and if josie is second oldest then see BBBB

AAAA
josie is 13 years older than mark
e=13+a
anne is 5 less than josie
c=e-5
the other 2 are 6 years apart
b+6=d
d=42
subsitute and get
b=36
add and get
78+a+c+e=195
a+c+e=117
e-13+e-5+e=117
3e-18=117
add 18 to both sides
3e=135
divided both sides by 3
e=45
subsitute
a=32
b=36
c=40
d=42
e=45


BBBB
oldest is 13 older than youngest
e=13+a
middle is 5 younger than josie (d)
c=d-5
the other 2 are 6 apart
b=e-6
d=42
subsitute
c=37
subsitute
a+b+37+42+e=195
a+b+e+79=195
subtract 79 from both sides
a+b+e=116
subsitute
e-13+e-6+e=116
3e-19=116
add 19 to both sides
3e=135
divide both sides by 3
e=45
subsitute
45-6=39=b
45-13=32=a
c=42-5=37
this is wrong because b cannot be older than c so therefor AAA si the correct answer


THE ANSWER IS
Josie is the oldest=45
Unknown is second oldest=42
Anne is middle=40
Unknown2 is second youngest=36
Mark is the youngest=32
5 0
3 years ago
What part of the story does x represent?
Gwar [14]

Answer:

x =x

Step-by-step explanation:

step 1 you can not identify an unknown variable therefore you leave it like that

3 0
3 years ago
Hii! i’ll give brainliest pls help
antoniya [11.8K]

Answer:

B

Step-by-step explanation:

pls mark brainliest

5 0
3 years ago
Read 2 more answers
Given that (-4,1) is on the graph of f(x), find the corresponding point for the function 4f(x)
AVprozaik [17]
F(-4) = 1
4f(-4) = 4

The point of interest is (-4, 4).
8 0
3 years ago
A recipe calls for one egg to serve every four people. It also requires two tbsp of salt for every five eggs used. If you are co
JulijaS [17]

Answer:

30 tsp

Step-by-step explanation:

400÷4=75

75÷5=15

15x2=20

7 0
3 years ago
Read 2 more answers
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