Is 4x = y a linear function?

Which equation has the solutions x = 1+

BaLLatris [955]

Answer:

The last equation x2 - 2x -4 = 0

has solution (x - 1)^2 - 5 = 0, x = 1 + root(5) or x = 1 - root(5)

Step-by-step explanation:

If a quadratic function has roots 1 and 5

f(x) = (x -1)(x- 5)

f(x) = x^2 - 6x + 5

Unless you meant. -4 and 6 ?

g(x) = (x + 4)(x - 6)

g(x) = x^2 -2x -24

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Or did you mean x = 1 and x =4 ?...

x^2 + 2x + 4 = 0 : complete square x^2 + 2x + 1 + 3 = 0, (x+1)^2 + 3 = 0

x^2 - 2x + 4 = 0 : complete square: (x -1)^2 + 3 = 0

0x^2 + 2x - 4 = 0, 2x - 4 = 0, x = 2

x^2 - 2x - 4 = 0 becomes: x^2 - 2x + 1 - 1 -4 = 0 ; (x - 1)^2 - 5 = 0

5 0

4 years ago

WILL MARK BRAINLIEST

seropon [69]

C. (22,16)

Y=x-6
16=22-6
16=16

7 0

3 years ago

what is the area of a triangle that has a height of 8 feet and a base length of 5 feet? 1.25 feet 3.20 feet 10 feet 20 feet

coldgirl [10]

20 feet
Area of a triangle:
1/2•base•height
1/2•8•5= 20

6 0

3 years ago

A certain drug treatment cures 90% of cases of hookworm in children.18 Suppose that 20 children suffer- ing from hookworm are to

Anni [7]

Answer:

Step-by-step explanation:

Here X the no of children suffering from hookworm treated and recovered is binomial because

a) Each child is independent of the other

b) There are only two outcomes

c) The probability for any child to recover is constant as 90% = 0.9

X is Bin (20,0.9)

a) Prob that all 20 will be cured

=P(X=20)= $0.9^{20} \\=0.1216$

b) Prob all but 1 will be cured= $P(x=1) = 20C1 (0.9) (.1)^{19} \\=1.8(10^8)$

c) Prob exactly 18 will be cured

$=P(X=18)\\=20C18 (0.9)^{18} (0.1)^2\\= 0.2852$

d) Prob exactly 90% will be cured.

= $P(X=18)\\=20C18 (0.9)^{18} (0.1)^2\\= 0.2852$

7 0

4 years ago

50 pts , i need the correct answer, my patient is gone because so many ppl put fake answers, just give the right answer i dont h

Troyanec [42]

Answer:

Hello! Sorry about your luck before although im 99% sure my answer is correct.

Answer: area is 180

Step-by-step explanation:

Ok so first starting off im going to calculate the area for each shape serperately and add them up since thats easier so as demonstrated in the picture the rectangle is 25 because i multiply by base × height and the base and height is 5 and 5 pointed in the picture so thats 25 although i didnt calculate the rest because the base and height is the same for each so we can just do 25 × 6 to get all the rectangles so 25 × 6 = 150 now we got the easy part out of the way now we should do the triangles I pointed to the base and height for that on the left the base being 5 and the height being 3 5 × 3 = 15 BUT WAIT this isn't are area for the triangles because when finding area for triangles we have to divide by 2 so... 15 ÷ 2 = 7.5 since there are 4 of those triangles I dont have to solve for the rest because i can just do 7.5 × 4 so...

7.5 × 4 = 30 now we just combine those areas together! so... 150 + 30 = 180 so 180 is our area HOPE THAT HELPS!

7 0

3 years ago