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NARA [144]
3 years ago
13

(30 Points) Simplify Each Expression And Show Steps/Work

Mathematics
1 answer:
Nutka1998 [239]3 years ago
8 0

1) (2i-4)-(6i+9) = 2i-4-6i-9 = -4i-13

2) (-3+8i)+(3-8i) = -3+8i+3-8i = 0+0i = 0

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The marine needs 14 boats for the 42 people registered for a boat race. How many boats will they need for 6 people?​
Degger [83]

Answer:

2

Step-by-step explanation:

We can write a proportion to determine

42 people          6 people

---------------- = ----------------

14 boats                x boats

Using cross products

42x = 6*14

42x =84

Divide each side by 42

42x/42 = 84/42

x = 2

They will need 2 boats

5 0
3 years ago
You rent a bicycle for $10 plus $2 per hour. Which type of equation is most suitable for modeling the cost of renting a bicycle?
dexar [7]

Answer:

When you rent a bicycle think about the time first.

Step-by-step explanation:

Bike it self is 10$

Time is 2$ per hour

2x(10)


6 0
3 years ago
HELP PLS!!!!! One link in a chain was made from a cylinder that has a radius of 3 cm and a height of 25 cm. How much plastic coa
garri49 [273]

Answer:

471 cm^2

Step-by-step explanation:

to find the literal surface area use formula= A^L=2πrh

2(3.14)(3)(25)=

471cm^2

7 0
3 years ago
Last week, the price of bananas at a grocery store was $0.80 per pound. This week, bananas at the same grocery store are on sale
monitta

Answer:

3.30

Step-by-step explanation:

You multiply the 5.5 pounds by the 80 cents then multiply the awnser of that by .25 and subtract that from the awnser of 5.5*.80

7 0
3 years ago
I do not understand it answer with explanation too please​
kykrilka [37]

Answer: x = 10

Step-by-step explanation:

The sum of all interior angles in a polygon add up to 360°

Meaning to find X we grab those numbers/variables and make them equal to 360°. This will give us an equation.

106 + 94 + 135 + x + ( x + 5 ) = 360

335 + x + x + 5 = 360

340 + 2x = 360

subtract 340 from both sides

2x = 20

Divide by 2

x = 10

Now solve the angle equations to find their angle.

( 10 + 5 ) = 15

x = 10

Now to check if it's right add them together

106 + 94 + 15 + 10 + 135 = 360 ( ITS CORRECT )

7 0
3 years ago
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