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3 years ago

Write (-5+8i)+(-5-8i) as a complex number in standard form

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

5 0

$(-5+8i)+(-5-8i) =
-5+8i-5-8i=-10$

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The box plot shows the number of new vocabulary words students learned last week. What

77julia77 [94]

Answer:

the answer is 50%

Step-by-step explanation:

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2 years ago

IM TIMED HELP !!! GIVING 100 POINTS !! Triangles MNP and QST are congruent. What is the measure of angle T? all interior angles

olga2289 [7]

Answer:

Step-by-step explanation:

we know that the interior angles equal 180 and that the triangles are congruent so, 66 + 78 = 144 so then we have to subtract 180 - 144 and that gives us 36

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3 years ago

Benny wants to make cookies.To make cookies, he needs 7/3 cups of flour per batch of cookies.If Benny has 7 cups of flour, then

Amanda [17]

Answer:

With 7 cups of flour 3.13 batches of cookies can be made.

Step-by-step explanation:

The amount of flour needed per batch of cookies = 7/3 cups

= 2.33 cup

⇒ 1 batch of cookies = 2.33 cup of flour

or the ratio of cookie to flour = 1 : 2.33

Now, the amount of flour Benny has = 7 cups

Let the total batches of cookie made = m

or, ratio of cookie to flour = m : 7

So, by the RATIO OF PROPORTIONALITY:

$\frac{1}{2.23} = \frac{m}{7 }$

⇒ m = 7 /2.23

or, m = 3.13

or, total batches of cookie made = 3.13

Hence, from 7 cups of flour 3.13 batches of cookies can be made.

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3 years ago

765ab4 is divisible by 36. Compute all ordered pairs (a, b) for which this is possible

tia_tia [17]

Answer:

All the ordered pairs (a,b) are

(0,5), (2,3), (4,1), (6,8), and (8,6).

Step-by-step explanation:

765ab4 to be divisible by 36, it must be divisible by both 9 and 4.

For any number to be divisible by 4, the last two digits of the number must be divisible by 4.

Here, the last two digits are b4, so as the number b4 is divisible by 4, b can be 0,2,4,6, and 8.

For any number to be divisible by 9, the sum of all the digit of the number must be divisible by 9.

Here, the sum of all the digits, S= 7+6+5+a+b+4=22+a+b.

Now, we have b={0,2,4,6, 8}

For b=0,

S=22+a+0=22+a which is a multiple of 9.