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san4es73 [151]
3 years ago
7

What is (2-7i)(-1+4i)

Mathematics
1 answer:
Daniel [21]3 years ago
7 0
15x, because 2 × 4x= 8x and -1×-7=7x...add 8x and 7x ull get the answer
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What is an equation of the line that passes through the points ( 0,-7) and ( 5, -1)
tresset_1 [31]

Answer:

y = 5/6x - 5.167

Or

y = 5/6x - 31/6

Step-by-step explanation:

The equation of a line

y = mx + c

Step 1: find the slope

m = y2 - y1 / x2 - x1

Given points

( 0 , -7) ( 5 , -1)

x1 = 0

y1 = -7

x2 = 5

y2 = -1

Insert the values into the equation

m = -1 - (-7) / 5 - 0

m = -1 + 7 / 5

m = 6/5

y = 6/5x + c

Step 2: sub any of the two points given into the equation

y = 5/6x + c

( 5 , -1)

x = 5

y = -1

-1 = 5/6(5) + c

-1 = 5*5/6 + c

-1 = 25/6 + c.

c = -1 - 25/6

LCM = 6

c = -6 - 25 / 6

c = -31/6

c = -5.167

Step 3: sub c into the equation

y = 5/6x + c

y = 5/6x - 31/6

Or

y = 5/6x - 5.167

The equation of the line is

y = 5/6x - 5.167

7 0
3 years ago
A van has room for 6 students and 2 teachers . How many vans are needed for a total of 48 students and 16 teachers ?
LekaFEV [45]
48 ÷ 6 = 8

16 ÷ 2 = 8

So you need 8 vans

I hope that helps!
5 0
3 years ago
Read 2 more answers
Which transformations is NOT an isometry?
BigorU [14]

Answer:

Dilation

Step-by-step explanation: im doing this in k-12 in math now

5 0
3 years ago
Need an answer to this
Firlakuza [10]

Answer:

x=20⁰

Step-by-step explanation:

The angle 6x is next to a 3x one.

And 6x+3x=180⁰

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x=20⁰

3 0
3 years ago
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H(t)=-10t+6<br> H(_____)=-44<br> Help me please.
alexira [117]

Answer:

-10t +6=-44

-10t=-44-6

-10t=-50

-50\-10

=5

8 0
3 years ago
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