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telo118 [61]
3 years ago
11

Simplify the expression (5 3i) (4-4i) a. 8i b. 9-i c. 9 i d. 9-7i

Mathematics
1 answer:
poizon [28]3 years ago
8 0
The expression will be d. 9-7i
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What value correctly fills in the blank so that the expressions are equivalent?
Step2247 [10]

Answer:

8

Step-by-step explanation:

8*4 is 32 8*9 is 72

so, it is 8

since it is distributive property 8(4+9)

8 0
3 years ago
Read 2 more answers
A rentail truck company charges $25 per day plus $0.35 for every mile (m) driven. Which equation can be used to find the number
Sunny_sXe [5.5K]

Answer:

0.35m + 25 = 42.50

Step-by-step explanation:

If you were to rent a truck for one day you will first have to pay a $25 fee for one day. This is represented by + 25 in the equation above.

Then for every mile you go you must pay $0.35, represented as 0.35m.

<em>As an example to make it easier if you had to pay 1 dollar per mile and you went 10 miles it would cost $10. This can be proved by 1m (m being the variable for number of miles) Plug in 10 for m and you can asee 1(10)=10, because obviously 1 times 10 is 10. </em>

Same premise with $0.35

Then both of those fees added up are equal to a total of $42.50.

To prove it can find the exact number of miles that need to be driven to cost a total of $42.50 just follow steps bellow.

1. 0.35m + 25 - 25 = 42.50 - 25

Subtracting the inital fee since it is part of the total, and if you add/subtract/multiply/divide on one side you must do to the other.

2. 0.35m/0.35 = 17.50/0.35

You divide because m is being multiplied with 0.35 and to undo the multiplication you divide. Doing the same to both sides.

3. m = 50

Plug in 50 to "m" in the equation above and if both sides are equal the answer is valid.

4 0
3 years ago
Which of the following is a proportion?
puteri [66]

Answer:

the second one

Step-by-step explanation:

8 0
3 years ago
I NEED ANSWER QUICKK
Komok [63]

Answer:

The answer is B

Step-by-step explanation:

I hope this helps :))

5 0
3 years ago
Find the angle measure that is supplementary to this angle.
ddd [48]
It's 91 degrees
supplementary angles mean
angles having sum of 180 degrees
89+91=180
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3 years ago
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