2 years ago

A solution to the equation x^3 + 2x - 25 = 0 lies between 2 and 3. Find this solution correct to 1 decimal place

Mathematics

1 answer:

Viktor [21]2 years ago

3 0

I have no idea??????

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Express 150 as: a) A fraction of 350. b) A percentage of 600.

NemiM [27]

A) 3/7 and B) 25%. Give me a like if I helped please :)

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2 years ago

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Find the x-intercepts of the parabola with vertex (1,-108) and y-intercept (0,-105). Write your answer in this form: (X1,y1), (x

Stolb23 [73]

Answer:

(7, 0) and (-5, 0)

Step-by-step explanation:

Vertex form

$y=a(x-h)^2+k$

(where (h, k) is the vertex)

Given:

vertex = (1, -108)

$\implies y=a(x-1)^2-108$

Given:

y-intercept = (0, -105)

$\implies a(0-1)^2-108=-105$

$\implies a(-1)^2=-105+108$

$\implies a=3$

Therefore:

$\implies y=3(x-1)^2-108$

The x-intercepts are when y = 0

$\implies 3(x-1)^2-108=0$

$\implies 3(x-1)^2=108$

$\implies (x-1)^2=36$

$\implies x-1=\pm \sqrt{36}$

$\implies x=1\pm 6$

$\implies x=7, x=-5$

Therefore, the x-intercepts are (7, 0) and (-5, 0)

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2 years ago

Solve 13 - 2x > 21 x>-4 x > -17 x< -17 x<-4

kherson [118]

Answer:

x>-4

Step-by-step explanation:

13-2x > 21

-13 -13

-2x >8

(-2x)/(-2) >(8)/(-2)

x>-4

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3 years ago

List the multiples of 4 starting from 40

Alexxandr [17]

40,44,48,52,56,60,64,68,72,76,80.........

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The ratio of swordfish to marlins caught on a deep sea fishing trip was 20 to 15. If 27 marlins were caught, how many swordfish

Kisachek [45]

20/15=N/27
Do cross multiplication.
20x27=540
540/15=39
So the answer ia 39.

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2 years ago