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2 years ago

Inclues all numbers between -1 and 4 including -1 but not including 4

Mathematics

1 answer:

zlopas [31]2 years ago

8 0

I’m so sorry but I really don’t know the answer but try the internet it might help

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forsale [732]

Answer:

Step-by-step explanation:

Given

x² - 3x - 12 = 0 ( add 12 to both sides )

x² - 3x = 12

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- $\frac{3}{2}$ )x + $\frac{9}{4}$ = 12 + $\frac{9}{4}$

(x - $\frac{3}{2}$ )² = $\frac{57}{4}$ ( take the square root of both sides )

x - $\frac{3}{2}$ = ± $\sqrt{\frac{57}{4} }$ = ± $\frac{\sqrt{57} }{2}$ ( add $\frac{3}{2}$ to both sides )

x = $\frac{3}{2}$ ± $\frac{\sqrt{57} }{2}$

Then

x = $\frac{3}{2}$ + $\frac{\sqrt{57} }{2}$ ≈ 5.27 ( to the nearest hundredth )

x = $\frac{3}{2}$ - $\frac{\sqrt{57} }{2}$ ≈ - 2.27 ( to the nearest hundredth )

3 0

3 years ago

Ying is a professional deep water free diver. His altitude (in meters relative to sea level), xxx seconds after diving, is model

Wewaii [24]

Answer:

60 seconds

Step-by-step explanation:

$D(x) = \dfrac{1}{36}(x-60)^2-100$

When Ying reaches his lowest altitude, his velocity is 0.

The velocity, v(x) is the tiome-derivative of D(x).

$v(x) = \dfrac{d}{dx}D(x)$

$v(x) = \dfrac{2}{36}(x-60)\times1 = \dfrac{x-60}{18}$ (This was done by using chain rule)

Equating v(x) to 0,

$\dfrac{x-60}{18} = 0$

$x - 60 = 0$

$x = 60$

5 0

3 years ago

Miranda has 5 shirts and 4 pairs of pants that she uses for her work clothes. How many different outfits can be assembled using

nordsb [41]

Answer:

Step-by-step explanation:

lets label each shirt as A, B, C, D, E and each pair of pants as a, b, c, d

combinations include:

Aa, Ab, Ac, Ad, Ba, Bb, Bc, Bd, Ca, Cb, Cc, Cd, Da, Db, Dc, Dd, Ea, Eb, Ec, Ed

however, it isn't necessary to write out all the combinations as you could just do 5*4=20.

4 0

3 years ago

Read 2 more answers

Please help me ASAP!!

taurus [48]

Answer:

its b The angles need to add up to 90 degrees and this fits the formula

4 0

3 years ago

Read 2 more answers

The median for the 5 numbers 2647, 1956, 2250, 2141, and x is 2141. What is the largest possible value for the number x?

Mila [183]

Answer:

2140

Step-by-step explanation:

Median can be described as the number that lies in the middle of a set of arranged observations. the observations can be arranged in ascending or descending order

in a set of 5 numbers, the median would be the 3rd number

the median is 2141. there was to be 2 numbers before and after 2141

1956, x 2141, 2250, 2647

the largest possible value of x is 2140. this is the largest number that is less than 2140

5 0

2 years ago