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3 years ago

Help me with the questions in the image

Mathematics

1 answer:

aliya0001 [1]3 years ago

5 0

Answer:

Step-by-step explanation:

5+7=12

8(9+3)

8(12)

<h3>iii.n+8 divided by 4 for n=28</h3>

=28+8 divided by 4

=36 divided by 4

<h3>iv.6p+40 divided by 5 for p =5</h3>

=6×5+40 divided by 5

=30+40 divided by 5

=70 divided by 5

=38

=3×6+7

=18+7

=25

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Let k ( x ) = 2 x + 3 and m ( x ) = 3 x 2 + 7 x − 10 . Find the indicated value. M ( k ( − 4 ) ) =

murzikaleks [220]

Answer: $30$

Step-by-step explanation:

Given

$k(x)=2x+3$

$M(x)=3x^2+7x-10$

$M\left(k(x)\right)$ is given by replacing the $x$ by $k(x)$ from the $M(x)$

$\Rightarrow M\left(k(x)\right)=3(2x+3)^2+7(2x+3)-10\\\Rightarrow M\left(k(x)\right)=3(4x^2+9+12x)+14x+21-10\\\Rightarrow M\left(k(x)\right)=12x^2+50x+38$

Now, $M\left(k(-4)\right)$ is

$\Rightarrow M\left(k(-4)\right)=12(-4)^2+50(-4)+38\\\Rightarrow M\left(k(-4)\right)=192-200+38\\\Rightarrow M\left(k(-4)\right)=30$

8 0

3 years ago

If A = (0, 0) and B = (8, 2), what is the length of AB?

dezoksy [38]

8, 2 because A doesn't add anything.

5 0

3 years ago

you are allowed to work a total of no more than 30 hours each week at your two jobs. Lawn mowing pays $5 per hour and babysittin

timama [110]

Answer:

5X + 8Y >= 300; intersection at (-20, 50)

Step-by-step explanation:

let t = work hours

0 < t < 30

X = time lawn mowing

Y = time babysitting.

X + Y < 30

5X + 8Y >= 300

We could solve...

X < 30 - Y

5(30 - Y) + 8Y >=300

150 - 5Y + 8Y >= 300

3Y >=150

Y >=50

then X < -20

intersection at (-20, 50)

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3 years ago

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Kai can walk 2 miles in a half of an hour. How far will he walk in 2 hours?

Vladimir79 [104]

Answer:

Kai will walk 8 miles

Step-by-step explanation:

Have a gr8 day!

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2 years ago

Rewrite the following in the form log(c).<br> log(8) – log(2)

jek_recluse [69]

Answer:

log(c). log(8) - log(2)

Step-by-step explanation:

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3 years ago