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ollegr [7]
3 years ago
15

What’s the correct why to solve

Mathematics
1 answer:
Vaselesa [24]3 years ago
6 0

x^2-y^2=2\\ \underline{x^2+y^2=4}\\\\ 2x^2=6\\ x^2=3\\ x=-\sqrt3 \vee x=\sqrt3\\\\ 3+y^2=4\\ y^2=1\\ y=-1 \vee y=1\\\\ x\in\{(-\sqrt3,-1),(-\sqrt3,1),(\sqrt3,-1),(\sqrt3,1)\}

So, there are 4 solutions.

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-3 = 5k + 7 please answer quick
Sever21 [200]

Answer:

K=-2

Step-by-step explanation:

-3 = 5k + 7

Subtract 7 to the other side

-3 -7 = 5k

-10 = 5k

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3 0
3 years ago
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Aneli [31]

Answer:

-1 5/9

Step-by-step explanation:

so first, simplify the signs so they don’t confuse you,

-5/6 - 17/18 + 2/9 (Since there are two negatives near the end, and their tecxhnically being mulitplied, -2/9*-1 (I added 1 for place holder) and when you multiply a negatives by a negative, you get a positive.

So find the lcm of the denominators which is 18 in this case

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Now solve the problem from left to right

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4 0
3 years ago
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Help please rn help
aksik [14]

Area of the large semicircle

= \pi{r}^{2}  \div 2

=  \frac{22}{7}  \times 12 {}^{2}  \times  \frac{1}{2}

=  \frac{11}{7}  \times12 \times 12

=  \frac{11}{7}  \times 144

= 226.28

Area of the small semicircle

= \pi  {r}^{2}  \div 2

=  \frac{22}{7}  \times 6 {}^{2}  \times  \frac{1}{2}

=  \frac{11}{7}  \times 6 \times 6

=  \frac{11}{7}  \times 36

= 56.57

Area of the figure

= 226.28 - 56.57

= 169.71 {cm}^{2}

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3 years ago
Two expressions are shown below. Explain whether or not expressions P and Q are equivalent
bulgar [2K]

Answer:

I don't see any expressions shown below.

Step-by-step explanation:

8 0
3 years ago
Hailey ordered 12 pizzas for a grade level party. If each person eats 3/8 of a pizza equally, how many people can Hailey feed wi
Marysya12 [62]

Answer:

24

Step-by-step explanation:

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