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3 years ago

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! EXTRA POINTS DONT SKIP:((

Mathematics

2 answers:

nalin [4]3 years ago

7 0

Answer:

-12

Step-by-step explanation:

Its -12 for sure!!!!!

zhannawk [14.2K]3 years ago

6 0

Answer:

-12

Step-by-step explanation:

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someone please do this for me... i will mark brainliest. all work needs to be shown. (picture shown above)

ivolga24 [154]

Step-by-step explanation:

just use step by step process so dum

6 0

3 years ago

Among all pairs of numbers (x,y) such that 3x+y=15, find the pair for which the sum of squares, x^2+y^2, is minimum. Write your

Dvinal [7]

Answer:

Minimum value occurs at (x, y) = (-5,0)

Step-by-step explanation:

Given: 3x + y =15

Rewriting this equation to Slope - Intercept form, we get:

y = -3x + 15

Squaring both sides,

$y^2 = (-3x + 15)^2$

$\implies y^2 = 9x^2 - 90x + 225$

Substituting in $x^2 + y^2,$ we get:

$x^2 + 9x^2 - 90x + 225$

= $10x^2 - 90x + 225$

Comparing this equation with $ax^2 + bx + c$ we get $a =10$ and $b = - 90$ .

The minimum value occurs at the axis of symmetry given by $x = \frac{-b}{2a}$ .

Therefore, x = - $\frac{-90}{2.10}$

$\implies x = 5$

If x = 5, y = -3(5) + 15 = 0

Thus, the point becomes (5,0) where it is minimum.

5 0

4 years ago

An envelope with 96 bookmarks in it has a mass of 1467 grams. The same envelope with 49 bookmarks in it has a mass of 762 grams.

masya89 [10]

If $m$ is the mass of the envelope and $b$ the mass of one bookmark, then

$\begin{cases}m+96b=1467\\m+49b=762\end{cases}$

We have

$(m+96b)-(m+49b)=1467-762\implies47b=705\implies b=15$

Then

$m+96\cdot15=1467\implies m+1440=1467\implies m=27$

so the envelope has a mass of 27 grams.

8 0

4 years ago

Can you please venmo me $5

Westkost [7]

Answer:

no sorry dude :/

3 0

3 years ago

Read 2 more answers

Suppose A is a positive real number and mA is the average value of (sin(Ax))3 on the

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7 0

3 years ago

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! EXTRA POINTS DONT SKIP:((