3 years ago

What is midpoint mean

Mathematics

2 answers:

noname [10]3 years ago

7 0

Middle of the line segment

Nana76 [90]3 years ago

4 0

Answer:

The middle of a line segment

Step-by-step explanation:

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Someone please help!! I’ll give brainliest!

snow_lady [41]

Answer:

1766.3

Step-by-step explanation:

V=4 /3πr^3

= 4/3(3.14)(7.5)^3

= 4/3(3.14)(421.88)

= 4/3(1324.69)

= 1766.25

= 1766.3

I hope this is right!

3 0

3 years ago

Which values of x and y would make the following expression represent a real number? (4+5i)(x+yi)

algol [13]

Answer:

So x=4 and y=-5 would work.

Step-by-step explanation:

When you multiply complex conjugates, you get a real result.

Example:

$(a+bi)(a-bi)=a^2-b^2i^2=a^2+b^2$

I replace $i^2$ with -1 since $i^2=-1$ .

$a^2+b^2$ is a real number (there is no imaginary part, no i).

So what is the conjugate of 4+5i?

4-5i

So x=4 and y=-5 would work.

A multiple of the complex conjugate would work as well.

$(a+bi)(ca-cbi)$

$c(a+bi)(a-bi)$

$c(a^2-b^2i^2)$

$c(a^2+b^2)$

This is still a real number; there is no imaginary part,no i.

5 0

3 years ago

Break apart 2 divided by 995

Marta_Voda [28]

Answer:

(995/2) ÷ 2 = 248.75

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3 years ago

Enzo’s profit over the last few months has been falling. In December he made $900, in January his profit was $500, and in March,

nika2105 [10]

Step-by-step explanation:

$900 that he gained in December +$500 that he gained in January-$300 that he lost=$1100

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3 years ago

Write the algebraic expression. twice the sum of x and 4

Cloud [144]

Answer: Y= X+4•2

Word form: Y equals X plus 4 times 2

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3 years ago