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Olegator [25]
3 years ago
13

Lin rode her bike 2 miles in 8 minutes. She rode at constant speed what is the asnwer

Mathematics
1 answer:
sukhopar [10]3 years ago
7 0
The velocity is 4. You didn’t say what you needed to find but I’m pretty sure it’s that
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How do I compare numerical expressions without calculating them
jenyasd209 [6]
Try to calculate them in your head and if that doesn't help use a calculator. I hope this helps
6 0
3 years ago
I need help on questions 9 and 10. The answers can either be -36, 20, 70 or 28
horrorfan [7]
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5 0
3 years ago
A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i what is the students mistakes
Rufina [12.5K]

Answer:

1. In the multiplication of the imaginary parts, the student forgot to square of i. OR

2. The student has only multiplied the real parts and the imaginary parts.

Correct value =22+7i.

Step-by-step explanation:

The given expression is

(4+5i)(3-2i)

A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i.

Student's mistake can be either 1 or second:

1. In the multiplication of the imaginary parts, the student forgot to square of i.

2. The student has only multiplied the real parts and the imaginary parts.

(4+5i)(3-2i)=4\times 3+5\times (-2)i=12-10i

Which is not correct. The correct steps are shown below.

Using distributive property, we get

4(3-2i)+5i(3-2i)

4(3)+4(-2i)+5i(3)+5i(-2i)

12-8i+15i-10i^2

12+7i-10(-1)       [\because i^2=-1]

12+7i+10

22+7i

Therefore, the correct value of (4+5i)(3-2i) is 22+7i.

4 0
3 years ago
Marcus wants to purchase new computers for his office staff. The bank grants him a single-payment loan of $22,000 for 182 days a
miv72 [106K]

Answer:

fff

Step-by-step explanation:

8 0
3 years ago
Gina is making $20 an hour. She receives a 10% raise. If gina works 40 hours a week, how much more money will she make each week
Elden [556K]

Answer:

880

Step-by-step explanation:

20 x 10% = 2

20 + 2 = 22

22 x 40 = 880

6 0
2 years ago
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