3 years ago

Hi, what is 45+b^78 divided by 67 then times 45^7?

Mathematics

1 answer:

Orlov [11]3 years ago

6 0

This is the answer for the question

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X^4-x^2-42=0 need to solve equation and find solution set

Ipatiy [6.2K]

That's a quadratic equation in $x^2$ , which means we get an extra square root and $\pm$ at the end.

$x^4 - x^2 - 42 = 0$

We factor,

$(x^2 - 7)(x^2+6) = 0$

$x^2 = 7 \quad \textrm{or} \quad x^2 = -6$

$x = \pm \sqrt{7} \quad \textrm{or} \quad x = \pm i \sqrt{6}$

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3 years ago

Suppose the diameter of a circle is \color{green}{4}4start color green, 4, end color green units. What is its circumference?

Triss [41]

I don’t really understand what this is asking but the formula for circumference is C= πd Remember that diameter (width of the circle) is double the radius (half the width of the circle) and π is about 3.14
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3 years ago

Are both 7 and -½ integers? why or why not?

Tems11 [23]

Answer:

No. (-1/2) is not an integer

Integers involve all the no. +ve and -ve. which can be written without fraction. ie whole no. are counted as integers.

(-1/2) is a fraction

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2 years ago

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Which of the following sets of angle measures can be used to draw an acute isosceles triangle? Select all that apply. 75°, 30°,

SCORPION-xisa [38]

Answer:

1. 80°, 80°, 40°

2. 60°, 60°, 60°

3. 20°, 140°, 20°

4. 50°, 50°, 80°

5. 75°, 30°, 75°

6. 80°, 55°, 45°

6, 2, and 4

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3 years ago

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) Asuka travels at an average speed of 50 mph for 20 miles.

Anuta_ua [19.1K]

Answer: 41.86 miles/hour

Step-by-step explanation:

Use Distance = Speed*Time to find the two missing values with the data that is provided for those two cases [in brackets].

MPH MILES HOURS

50 20 [0.4]

[40] 70 1.75

Totals 90 miles 2.15 hours

Average = 90 miles/2.15 hours

41.86 mph

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3 years ago