3 years ago

Pretty easy math question-4/7 x (-5)make sure final answer is in simplest form.

1 answer:

6 0

The answer is 20/7 in improper fraction to make into the simplest form you need to change it into a mixed fraction it would turn out to be 2 6/7

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What is the value of x?

navik [9.2K]

3x+84=180 minus 84
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3 years ago

Calculate the area of this trapezium.<br> 7.9 cm<br> 6.2 cm<br> 10.8 cm

cestrela7 [59]

Answer:

A = 57.97 cm²

Step-by-step explanation:

The area (A) of a trapezium is calculated as

A = $\frac{1}{2}$ h (a + b)

where h is the perpendicular height and a, b the parallel bases

Here h = 6.2, a = 10.8 and b = 7.9, thus

A = $\frac{1}{2}$ × 6.2 × (10.8 + 7.9) = 3.1 × 18.7 = 57.97 cm²

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3 years ago

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3 years ago

The highest temperature ever recorded in Death Valley, California, was 121°, while the lowest ever recorded there was 13° below

s344n2d4d5 [400]

Answer:

The answer is C

Step-by-step explanation:

Remember it says 13' below zero, and 121' is the highest temperature.

7 0

3 years ago

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Which of the following expressions is not equivalent to the quotient of sqrt2(cos45° + isin45°) and sqrt2(cos315° + isin315°)?

harkovskaia [24]

Answer:

-i

Step-by-step explanation:

Given are two complex numbers as

$z1 = \sqrt{2} (cos 135+isin 135)z2 = \sqrt{2} (cos 315+isin315)$

To find quotient

We can use Demoivre theorem for products and quotients here

Quotient would be equal to

$\frac{z1}{z2} =\frac{\sqrt{2}(cos45+isin45) }{\sqrt{2}(cos315+isin315) } \\=cos (45-135)+isin(45-135)\\=cos90-isin90\\=-i$

Hence quotient = -i

5 0

4 years ago

Read 2 more answers