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kow [346]
3 years ago
8

Urgent mathematics help needed!! URGENT

Mathematics
1 answer:
AleksAgata [21]3 years ago
5 0

Hello,

Please, see the attached files.

Thanks.

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Write an equivalent expression for each of the following. Express your answers in the form a + bi or a - bi
Lana71 [14]

Answer:

44 +14i

Step-by-step explanation:

(5 + i)(9 + i)

FOIL

first 5*9 = 45

inner: 9i

outer :5i

last: i*i = i^2 = -1

Add togheter

45 + 9i+5i -1

Combine like terms

44 +14i

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3 years ago
Alyssa spent $15 at the mall yesterday. She now has $30 left in her purse.
Umnica [9.8K]
She had 45$ before she spent it. 30+15
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What is 857/45 as a mixed number? having trouble with sixth grade math.
barxatty [35]
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3 years ago
Nadia makes a monthly income of $4,000. How much will Nadia have for impulse shopping after she pays all of her bills for the mo
Llana [10]
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$2560
7 0
3 years ago
Is the following statement true? Explain.
sukhopar [10]

Step-by-step explanation:

We can prove the statement is false by proof of contradiction:

We know that cos0° = 1 and cos90° = 0.

Let A = 0° and B = 90°.

Left-Hand Side:

cos(A + B) = cos(0° + 90°) = cos90° = 0.

Right-Hand Side:

cos(A) + cos(B) = cos(0°) + cos(90°)

= 1 + 0 = 1.

Since LHS =/= RHS, by proof of contradiction,

the statement is false.

4 0
3 years ago
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