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2 years ago

When x=-2 and y=-3. - x^2? - 3xy + 2y^3 is

Mathematics

1 answer:

Angelina_Jolie [31]2 years ago

3 0

Answer:

-66

Step-by-step explanation:

-(-2)^2=-4

-3(-2)(-3)+2(-3)^3= -62

-4-62= -66

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Jennifer has 12 pineapples in her lunchbox. For every pineapple she has 6 strawberries. How many pieces of fruit does Jennifer h

satela [25.4K]

Answer:

84 pieces of fruit.

Step-by-step explanation:

I got this answer by doing 12*6 = 72, but this is not our final answer because we still have to add the pineapples which gives us 84.

Hope this helps!!

5 0

2 years ago

Read 2 more answers

Question 5

Mice21 [21]

Answer:

The missing value is 2

Step-by-step explanation:

A direct variation satisfies the equation $y=kx$ .

Since the point (-18, 12) lies on this line, it must satisfy this equation.

$\implies 12=-18k$

$k=-\frac{12}{18} =-\frac{2}{3}$

Hence the equation of this line is $y=-\frac{2}{3}x$

Now we substitute x=-3 to find y.

$y=-\frac{2}{3}*-3=2$

Therefore the missing value is 2

4 0

3 years ago

Divide 5x^2 +6x-9 into 25x^4+19x^2-x-78

DochEvi [55]

I've uploaded a photo with the answer because it's too hard to do this out on the computer.

6 0

3 years ago

Can you help me please?

morpeh [17]

$\bf 3\sqrt{2}-\sqrt{50}+3-\sqrt{8}+\sqrt{288}-\sqrt{9}~~ \begin{cases} 50=2\cdot 5\cdot 5\\ \qquad 2\cdot 5^2\\ 8=2\cdot 2\cdot 2\\ \qquad 2^2\cdot 2\\ 288=2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 3\cdot 3\\ \qquad 2^4\cdot 2\cdot 3^2\\ \qquad 2 (2^2)^2 3^2\\ \qquad 2(2^2 3)^2\\ \qquad 2(12)^2\\ 9=3^2 \end{cases}$

$\bf 3\sqrt{2}-\sqrt{2\cdot 5^2}+3-\sqrt{2^2\cdot 2}+\sqrt{2\cdot 12^2}-\sqrt{3^2} \\\\\\ 3\sqrt{2}-5\sqrt{2}+3-2\sqrt{2}+12\sqrt{2}-3 \\\\\\ 3\sqrt{2}-5\sqrt{2}-2\sqrt{2}+12\sqrt{2}+3-3\implies \stackrel{\textit{adding like-terms}}{8\sqrt{2}}$

7 0

3 years ago

Help me please thank you

HACTEHA [7]

Answer:

The number of girls

7 0

2 years ago