3 years ago

Please help me please please help me ASAP

Mathematics

1 answer:

Katena32 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

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Please help! It would mean a lot and thanks! :)

notsponge [240]

To add 1/2 and 5/12, make both fractions have the same denominator:

1/2 is the same as 6/12, so 6/12+5/12=11/12

Thus, B is right.

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3 years ago

In a class of 32 students the mean height of the boys is 1.56 metres

mart [117]

Answer: JW.org is where you can find your answers.

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4 years ago

URGENT! WILL MARK BRAINLIEST!

Sergeu [11.5K]

Answer:

Hi! Your answer will be : 599.37!

Step-by-step explanation:

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4 years ago

..vertex: (4, -1)<br> f(3) = -6

s344n2d4d5 [400]

Answer:

$\huge\boxed{f(x)=-5(x-4)^2-1=-5x^2+40x-81}$

Step-by-step explanation:

The vertex form of an equation of a parabola:

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

$(h;\ k)$ - vertex

We have

vertex $(4;\ -1)\to h=4;\ k=-1$

$f(3)=-6$

Therefore we have:

$f(x)=a(x-4)^2+(-1)=a(x-4)^2-1$

Substitute $x=3$ and $f(3)=-6$

$a(3-4)^2-1=-6\qquad|\text{add 1 to both sides}\\\\a(-1)^2=-6+1\\\\a(1)=-5\\\\a=-5$

Finally:

$f(x)=-5(x-4)^2-1=-5(x^2-2(x)(4)+4^2)-1\\\\=-5(x^2-8x+16)-1=-5x^2+(-5)(-8x)+(-5)(16)-1\\\\=-5x^2+40x-80-1=-5x^2+40x-81$

4 0

4 years ago

Solve: −6x+4≤−16−2x . Express your answer in interval notation. (Express your answer in interval notation. Use U to indicate a u

FromTheMoon [43]

Answer:

[5, oo)

Step-by-step explanation:

Add 6x+16 to both sides:

20 ≤ 4x

5 ≤ x . . . . . . divide by 4

The solution interval is [5, oo).

6 0

3 years ago

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