All categories

3 years ago

What does the product (-5-2i)(3+7i) equal

Mathematics

1 answer:

Marina CMI [18]3 years ago

8 0

This in what I got:
(-7i)(10i)
-70i

You might be interested in

2 If a hockey team loses 33% of the games they play, what is the probability that this team will win exactly 10 games out of the

Gekata [30.6K]

They lose 33% of games i.e 0.33
They win 67% of games i e 0.67

P(A)=0.33
P(A')=0.67

Now

They win from 15games=10
They lose=5

The required probability

$\\ \rm\rightarrowtail P(A')^{10}\times P(A)^5\times ^{15}C_{10}$

$\\ \rm\rightarrowtail (0.33)^{5}\times (0.67)^{10}\times \dfrac{15!}{5!10!}$

$\\ \rm\rightarrow 0.0039(0.0182)\times\dfrac{15(14)(13)(12)(11)10!}{5!10!}$

$\\ \rm\rightarrowtail 0.00007098\times \dfrac{360360}{120}$

$\\ \rm\rightarrowtail 0.00007098(3003)$

$\\ \rm\rightarrowtail 0.213$

So probability

0.213(100)=21.3%

Option B

3 0

2 years ago

Read 2 more answers

if you multiply both sides of an equation by the same number the new equation will have the same solution

asambeis [7]

Answer:

Yes, the new equation that we get after multiplying the same number to both sides of an equation, will have the same solution.

Step-by-step explanation:

Yes, the new equation that we get after multiplying the same number to both sides of an equation, will have the same solution.

This is because we know from the property of an equation that common numbers of two sides of an equation cancel each other and the equation gets simplified.

So, if we multiply the same number to both sides of an equation then the common multiplier gets automatically canceled out and finally, the original equation remains the same.

4 0

2 years ago

Please help!!! i will mark brainliest and i need a little bit of explanation!!

Mazyrski [523]

Answer:

Step-by-step explanation:

it is e because 2 hours is speed is 40 4 hours speed is i0

8 0

3 years ago

If two points of a ray lie in a plane, then all of the ray lies in the plane.true or false

Gnoma [55]

The correct answer for the given statement above would be FALSE. If two points of a ray lie in a plane, then not all of the ray lies in the plane because i<span>f two points of a ray lie in a plane, that does not imply that the ray lies in the plane. If A then B, B does not necessarily imply A. This makes the statement incorrect. </span>

3 0

3 years ago

The intersection of roads M and N creates a 41.4 degree angle. What are the complimentary and supplementary angles of this inter

astra-53 [7]

Complimentary means 90 degree angle so 90-41.4= the complimentary angle which is 48.6. Supplementary means 180 degrees so 180-41.4= the supplementary angle which is 138.6..

5 0

3 years ago