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3 years ago

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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How do I do the last one?

TEA [102]

Answer:

Step-by-step explanation:

16 cm3/s

5 0

4 years ago

Evaluate the following expressions for a = -3,b=2,c=5

Ksju [112]

Hey!

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We know that (a = -3), (b = 2), (c = 5), and (d = -4).

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Solution #1:

$=\frac{a-4b}{3c+2d}$

$=\frac{(-3) - 4(2)}{3(5) + 2(-4)}$

$=\frac{(-3) - 8}{15 +( -8)}$

$=\frac{-11}{7}$

≈ 1.57

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Solution #2:

= a - 4b / 3c + 2d

= (-3) - 4(2) / 3(5) + 2(-4)

= (-3) - 8 / 15 + (-8)

= (-3) - 0.53 + (-8)

= (-3.53) + (-8)

= -11.53

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Solution #1 Answer: 1.57

Solution #2 Answer: -11.53

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Hope This Helped. Good Luck! Brainly is here to help :)

6 0

3 years ago

Heath has 10 pennies in his piggy bank initially. He doubles the number of pennies in his piggy bank each day for five days. wri

vaieri [72.5K]

Answer:

y = 10 * 2^x

y(5) = 10 * 2^5

Day 0 = 10 pennies: Point(0, 10)

Day 1 = 20 pennies: Point(1, 20)

Day 2 = 40 pennies: Point(2, 40)

Day 3 = 80 pennies: Point(3, 80)

Day 4 = 160 pennies: Point(4, 160)

Day 5 = 320 pennies: Point(5, 320)

Step-by-step explanation:

Heath has 10 pennies, so pennies = 10.

He doubles the number of pennies each day, so total pennies = 10 * 2 to the power of # of days.

Using the equation y = 10 * 2^x will give you the answer for any number of days. Since the problem asks for 5 days, you plug in 5 for x. On the graph, this would be a single point (5, 320).

So, plot the 6 points you have and connect a curved line through it. That should be your answer.

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4 years ago

A,b,c,or d help plz<br><br><br>Does this table represent a function

brilliants [131]

Yes, because every x-value corresponds to exactly one y-value

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3 years ago

Our 6 Grade math class was comparing and different lemonade recipes,one used 2 cups of water to 1 scoop of mixture. The other us

Reptile [31]

The one that used two cups. for the one that used 5 cups of water and 3 scoops of mixture would have a more strong taste.

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4 years ago