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IgorC [24]
3 years ago
14

Write each percent as a decimal and as a mixed number or fraction in simplest form 400%

Mathematics
1 answer:
Drupady [299]3 years ago
7 0
400 as a decimal would be 4.0, as a fraction would be 4.
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ASAP... If u scam me :( I will report you :(
RUDIKE [14]
14) the slope for the first problem is -2/8.
Not proportional

15) The slope is 1/6.
Not proportional

16) The slope is 0.
Not proportional

To determine whether x and y have a proportional relationship, see if the line through these points passes through the origin (0, 0).

Hope this helps! Merry Christmas!✨❤️
5 0
3 years ago
Which of the following are square roots of —8 + 8i/3? Check all that apply.
8090 [49]

Answer:

Options (2) and (3)

Step-by-step explanation:

Let, \sqrt{-8+8i\sqrt{3}}=(a+bi)

(\sqrt{-8+8i\sqrt{3}})^2=(a+bi)^2

-8 + 8i√3 = a² + b²i² + 2abi

-8 + 8i√3 = a² - b² + 2abi

By comparing both the sides of the equation,

a² - b² = -8 -------(1)

2ab = 8√3

ab = 4√3 ----------(2)

a = \frac{4\sqrt{3}}{b}

By substituting the value of a in equation (1),

(\frac{4\sqrt{3}}{b})^2-b^2=-8

\frac{48}{b^2}-b^2=-8

48 - b⁴ = -8b²

b⁴ - 8b² - 48 = 0

b⁴ - 12b² + 4b² - 48 = 0

b²(b² - 12) + 4(b² - 12) = 0

(b² + 4)(b² - 12) = 0

b² + 4 = 0 ⇒ b = ±√-4

                     b = ± 2i

b² - 12 = 0 ⇒ b = ±2√3

Since, a = \frac{4\sqrt{3}}{b}

For b = ±2i,

a = \frac{4\sqrt{3}}{\pm2i}

  = \pm\frac{2i\sqrt{3}}{(-1)}

  = \mp 2i\sqrt{3}

But a is real therefore, a ≠ ±2i√3.

For b = ±2√3

a = \frac{4\sqrt{3}}{\pm 2\sqrt{3}}

a = ±2

Therefore, (a + bi) = (2 + 2i√3) and (-2 - 2i√3)

Options (2) and (3) are the correct options.

6 0
3 years ago
Serena bought a total of 135 notebooks and pencils for her students. Each notebook cost $1.75, and each pencil cost $0.35. The t
notsponge [240]

Answer:

81 pencils is the answer

8 0
3 years ago
A company produces a 4.56×10 to the third power lightbulbs each week running in scientific notation which is the best estimate o
stepladder [879]

Answer:Production rate  = 4.56 x 10³ bulbs/week

Production time = 9.36 x 10² weeks

Number of bulbs produced is

Answer: 4.27 x 10⁶ bulbs

Step-by-step explanation:

5 0
3 years ago
Which inequality represents that - 14 more
babunello [35]

Answer:

A) -14 + 2n > 18

Step-by-step explanation:

inequality represents that - 14 more than twice a number is no less than 18.

<h3>Hope it is helpful...</h3>
7 0
2 years ago
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