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3 years ago

Help I am being timed

Mathematics

1 answer:

Levart [38]3 years ago

3 0

Answer:

Let us say x is a real number and z = a + ib is complex

|x| > 0

|z| = |a + ib| = square-root (a^2 + b^2)

Step-by-step explanation:

|x| > 0 the absolute value of a real number is a nonnegative real number

The |a + ib| = square-root of the sum of the squares of the real components of the complex number

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A constructive company purchased seven house lots of the following sizes 1 3/8 acres , 2 1/8 acres. 1 1/8 acres , and 2 1/4 acre

chubhunter [2.5K]

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3 years ago

The measure of angle A is 15°, and the length of side BC is 8. What are the lengths of the other two sides, rounded to the neare

Leokris [45]

This is the concept of geometry, given that AB=AC, it means that the tirangle is isosceles, thus to get the value of AB and AC we proceed as follows;
thus using the cosine rule:
c^2=a^2+b^2-2abcosC
suppose\AB=AC=x
thus;
8^2=x^2+x^2-2*x*xcos15
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3 years ago

Read 2 more answers

Please answer numbers 32 and 33! Please show work and explain your answer!

mrs_skeptik [129]

12.
Add like terms from both trinomials:

$4x^{2} + -2x^{2} = 2x^{2}$
$2x + -5x = -3x$
$-1 + 3 = 2$

Combine these terms to get a new trinomial as your answer:

$2x^{2} - 3x + 2$

13.
Subtract like terms from both trinomials (note that subtracting a negative is the same as adding it as a positive):

$3x^{2} - 5x^{2} = -2x^{2}$
$-8x - -11x = -8x + 11x = 3x$
$-1 - -1 = -1 + 1 = 0$

0 can be left out of the answer.

Combine these terms to get a binomial as your answer:

$-2x^{2} + 3x$

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3 years ago

What expression can be used to find the total discount? Select all that apply. 0.3*42 or 3/10*42 or 0.03*42 or 3 *4.2

ehidna [41]

0.3*42 this gives you a 30% discount

3/10*42 this gives you a 30% discount

0.03*42 this gives you a 3% discount

3 *4.2 This is not a discount

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3 years ago

The corner convenience store sells candy bars at 4 for $2.91. At the price, how much would the store charge for 3 candy bars?

den301095 [7]

Answer:

$2.1825 or simplified is $2.18.

Step-by-step explanation:

0.7275 per candy bars.

0.7275 x 4 = $2.91.

So according to that logic,

0.7275 x 3 = $2.1825.

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2 years ago