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2 years ago

Danielle will use the instructions in the box below to make a cleaning solution I

Mathematics

1 answer:

matrenka [14]2 years ago

4 0

13 cups of water -- 2 cups of concentrated cleaner (the ratio is $\dfrac{13}{2}$ )

w cups of water -- 5 cups of concentrated cleaner (the ratio is $\dfrac{w}{5}$ )

Write a proporion:

$\dfrac{13}{2}=\dfrac{w}{5}.$

Answer: option A

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The volume of a sphere is 267.95 m2. To the nearest meter, what is the radius of the sphere? Use

Novosadov [1.4K]

Answer:

Step-by-step explanation:

v=4/3 pi r^3
substitute 267.95=4/3×3.14×r^3
267.95= 12.56r^3/3
multiply by the reciprocal on both sides 64=r^3
find the cuberoot on both sides to remove the cube hence 4=r

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2 years ago

Please help I don't understand this very well *picture*

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Answer:

The inequality is 9 less than and equal to 5

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2 years ago

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Helpppp What is 25% of 307 10 | 2 12 1 7 2

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Step-by-step explanation:

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Eunique scores 20 points during the game. This is eleven more than three-fifths of the points she scored in previous game. How m

Ket [755]

Answer:

Step-by-step explanation:

If we call the points she scored in the last game x, we can actually write out an equation to describe what is being said. 20=11+(3/5)x. Hopefully that makes sense. 3/5 of the previous score plus 11 is 20. Anyway, you can just solve this algebraic expression for x.

20=11+(3/5)x subtract 11 from both sides

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2 years ago

Find four distinct complex numbers (which are neither purely imaginary nor purely real) such that each has an absolute value of

Luda [366]

Answer:

0.5 + 2.985i
1 + 2.828i
1.5 + 2.598i
2 + 2.236i

Explanation:

Complex numbers have the general form a + bi, where a is the real part and b is the imaginary part.

Since, the numbers are neither purely imaginary nor purely real a ≠ 0 and b ≠ 0.

The absolute value of a complex number is its distance to the origin (0,0), so you use Pythagorean theorem to calculate the absolute value. Calling it |C|, that is: