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Semmy [17]
3 years ago
6

Simplify the expression. 8.8 + 3.2y − 0.5(16y − 3)

Mathematics
1 answer:
Solnce55 [7]3 years ago
5 0

Expand

8.8 + 3.2y - 8y + 1.5

Collect like terms

(8.8 + 1.5) + (3.2y - 8y)

Simplify

<u>10.3 - 4.8y</u>

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Solve using the correct order of operation 5x(11 x 9 + 7squared) + 4
laila [671]

Answer:

i love you :)

Step-by-step explanation:

5 × ( 99 + 7² ) + 4

5 × ( 148 ) + 4

740 + 4

744

6 0
2 years ago
Please HELP!!!!
Karolina [17]

Answer:


Step-by-step explanation:

Firstly, note that -2i really is just z = 0 + (-2)i, so we see that Re(z) = 0 and Im(z) = -2.

When we're going from Cartesian to polar coordinates, we need to be aware of a few things! With Cartesian coordinates, we are dealing explicitly with x = blah and y = blah. With polar coordinates, we are looking at the same plane but with angle and magnitude in consideration.

Graphing z = -2i on the Argand diagram will look like a segment of the y axis. So we ask ourselves "What angle does this make with the positive x axis? One answer you could ask yourself is -90°! But at the same time, it's 270°! Why do you think this is the case?

What about the magnitude? How far is "-2i" stretched from the typical "i". And the answer is -2! Well... really it gets stretched by a factor of 2 but in the negative direction!

Putting all of this together gives us:

z = |mag|*(cos(angle) + isin(angle))

= 2*cos(270°) + isin(270°)).

To verify, let's consider what cos(270°) and sin(270°) are.

If you graph cos(x) and look at 270°, you get 0.

If you graph sin(x) and look at 270°, you get -1.

So 2*(cos(270°) + isin(270°)) = 2(0 + -1*i) = -2i as expected.

3 0
3 years ago
Use properties of addition and subtraction to evaluate the expression <br> -42 - 29 - 28
Setler [38]
(-42) (-29) (-28)
-42 - 29 = -71
-71 - 28 = -99

-99 is your answer

hope this helps
7 0
3 years ago
Tom is putting money into a savings account. He starts with $650 in the savings account, and each week he adds $60 . Let S repre
mario62 [17]
S = 60W + 650 <== ur equation

after 18 weeks...so sub in 18 for W

S = 60(18) + 650
S = 1080 + 650
S = 1730 <==
7 0
3 years ago
Read 2 more answers
Find the area of this triangle. Round to<br> the nearest tenth.<br> 17 m<br> 35°<br> 15 m<br> [? ]m2
balu736 [363]

Answer:

32m²

Step-by-step explanation:

thanks me later ,correct me if I'm wrong

7 0
2 years ago
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