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3 years ago

bro I'm really stuck with this, and my brain cells are too small to figure this. out, can someone help me? thank you :)

Mathematics

2 answers:

loris [4]3 years ago

5 0

The answer is B because you’d have to cancel out the 4 then add it to 18, since the 4 was negative

deff fn [24]3 years ago

3 0

Answer:

Step-by-step explanation:

First isolate the variable, <em>x. </em>To do this, use inverse operations. The inverse operation of -4 is +4. So, add 4 on both sides of the equals sign. The positive 4 cancels out the negative 4 on the left side. Add 4 to the other side, -18, for -14. You are left with 7x = -14. Now to get rid of the coefficient, 7. The inverse of x7 is ÷7. So divide 7x by 7 to completely isolate <em>x</em>. On the right side, -14 is divided by 7 to get -2. You are left with <em>x</em> = -2. Wow that was a ted talk :P Anyway, hope this was helpful ^^ lmk if I need to clarify about anything :D Good day man

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718-119x+719 for x =0<br> please simplify and find the value

iragen [17]

The answer would be 1437 due to the zero property. Therefore you only add the other two numbers.

5 0

2 years ago

SUppose the total cost C(x) to manufacture a quantity x of insecticide (in hundreds of liters) is given by

Hitman42 [59]

Answer:

a) $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ .

b) $C(x)$ decreases in $(8\,s, 10\,s)$ .

Step-by-step explanation:

Let $C(x) = x^{3}-27\cdot x^{2}+240\cdot x +850$ , where $x$ is the quantity of insecticide, measured in hundreds of liters, and $C(x)$ is the total manufacturing cost as a function of the quantity of the insecticide, measured in US dollars. A possible approach to determine which regions of $C(x)$ are decreasing and increasing by means of the first derivative and graphing tools. The first derivative of the function is:

$C'(x) = 3\cdot x^{2}-54\cdot x+240$ (1)

Please notice that regions where C(x) is increasing has $C'(x) > 0$ , whereas $C'(x) < 0$ when $C(x) < 0$ .

We notice that $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ . Besides, $C(x)$ decreases in $(8\,s, 10\,s)$ .

6 0

3 years ago

Please help!!!! *Middle school math*

kifflom [539]

Answer:

2,728‬ words

Step-by-step explanation:

So this is a basic multiplication problem, so we just multiply the only numbers there:

88 x 31 = 2,728‬

So Captain's Sea Stories has 2,728‬ words in total

hope this helps:)

8 0

3 years ago

Read 2 more answers

Fiona and Pip win some money and share it in the ratio 3:1. Fiona gets £30. How much did they win in total?

Zina [86]

Answer:

Step-by-step explanation:

30÷3=10

30+10=40

Hope this helps! :)

7 0

3 years ago

Which ordered pair is a solution of x-y=2 and <br> 3y-x=8

Leokris [45]

The ordered pair is a solution of x - y = 2 and 3y - x = 8 is (x, y) = (7, 5)

<h3><u>Solution:</u></h3>

Given two equations are:

x - y = 2 and 3y - x = 8

<em><u>To find: orderes pair i.e (x, y)</u></em>

Let us consider:

x - y = 2 ------- eqn 1

3y - x = 8 --------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to find values of "x" and "y"</u></em>

On rearranging eqn 2, we get

-x + 3y = 8 ------ eqn 3

Add eqn 1 and eqn 3

x - y = 2

-x + 3y = 8

(+) ---------------

0 + 2y = 10

2y = 10

Therefore from eqn 1,

x - y = 2

x - 5 = 2

x = 5 + 2 = 7

Thus the ordered pair to the given equations are (x, y) = (7, 5)

8 0

3 years ago