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const2013 [10]
3 years ago
7

Which expressions are equivalent to the given expression?

Mathematics
1 answer:
Komok [63]3 years ago
5 0

-51 - 6i AND -3 + 2i - 2(24) - 8i are correct :)

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Lucia has 3.5 hours left in her workday as a car mechanic. Lucia needs 1/2 of an hour to complete one oil change.
MatroZZZ [7]

Answer: So Lucía has 3.5 hours left, and need 1/2 of an hour (or 0.5 hours) to do one oil change.

a) If you divide the total time she has by the time she needs for each oil change, then you got the total number of oil changes that she can do in that time; this is:

3.5/0.5 = 7

So she can do 7 oil changes in 3.5 hours.

b) If she can complete two car inspections in the same amount of time it takes her to complete one oil change, then she can do two car inspections in 0.5 hours.

2*car inspections = 0.5 hours

car inspection = (0.5/2) hours

then one car inspection will take 0.5/2 = 0.25 hours.

c) Two ways to solve this:

1) Do the same that we did in a), this is: 3.5/0.25 = 14

she can do 14 car inspections.

2) If in 3.5 hours, she can do 7 oil changes, and in the time she does an oil change, she can do two car inspections, then in 3.5 hours she can do 7*2 car inspections, and 7*2 = 14

5 0
3 years ago
Read 2 more answers
The difference of 3 times a number and 20 is greater then 10
Novosadov [1.4K]
If the number is x, then 3 times x -20 >10 and 3x-20>10. Adding 20 to both sides, we get 3x >30 and by dividing by 3 we get x >10
3 0
3 years ago
a store had three baskets with an equal number of flower bouquets in each. customers purchased 8 bouquets from each basket, and
Nostrana [21]

Answer:

8

Step-by-step explanation:

18+8=26

26 / 3 = 8

8

hope this helped!

~ angilina

5 0
3 years ago
In how many ways can a gymnastics team of 4 be chosen from 9 gymnasts?
serious [3.7K]
The answer is 126
 I think.... hope this helped:)
5 0
3 years ago
Find the area of the rhombus.<br> A=<br> square units
mylen [45]

Answer: A=70 square units

Step-by-step explanation:

The area of a triangle can be found using the formula A=\frac{1}{2} bh

Let 5=h and 7=b

Plug in the values and solve

A=\frac{1}{2} (7)(5)

A=17.5

However, since four of these triangles make up this rhombus, we can multiply the area of one of these triangles by four to find the area of the whole rhombus.

A=17.5*4

A=70

8 0
3 years ago
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