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svet-max [94.6K]
2 years ago
13

Find the area of a trapezoid if base 1 is 10 units and base 2 is 18 units and the height is 5 units.

Mathematics
1 answer:
ELEN [110]2 years ago
4 0

Answer:

A=7.5

Step-by-step explanation:

A=a+b

2h=1+2

2·5=7.5

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A right triangle has one 37 angles, find the other two angles
Natalija [7]
The sum of any triangle's three angles always add up to 180 degrees. Since you know two angles already ( 37 and 90 ), you can subtract those from 180 to find the remaining angle which is 53 degrees. The answer to your question is 90 degrees and 53 degrees.
5 0
3 years ago
If x=(10-3i) and y=(3-10i), then xy=? and x/y=?
Solnce55 [7]

Answer:

xy=-109i

\frac{x}{y}=\frac{60}{109}+\frac{91}{109}i

Step-by-step explanation:

xy=(10-3i)(3-10i)

To compute x times y must use foil on the right hand side.

First:  10(3)=30

Outer: 10(-10i)=-100i

Inner: -3i(3)=-9i

Last: -3i(-10i)=30i^2=-30

------------------------------------Add like terms:

-109i

----------------

\frac{x}{y}

\frac{10-3i}{3-10i}

Multiply top and bottom by bottom's conjugate:

\frac{(10-3i)(3+10i)}{(3-10i)(3+10i)}

Foil the top and just do first and last of Foil for the bottom since the bottom contains multiplying conjugates:

\frac{30+100i-9i-30i^2}{9-100i^2}

Replace i^2 with -1:

\frac{30+91i+30}{9+100}

\frac{60+91i}{109}

\frac{60}{109}+\frac{91}{109}i

7 0
3 years ago
Find the equation of a line?​
vredina [299]

Answer:

You can put this equation into point slope formula which is…

y-y1= m(x-x1)

Whilst m is slope
x1 and y1 (x1, y,1)

So in this case lets find the slope first.
Slope is calculated by y2-y1/ x2-x1
Can be any point.

7-(-1) / 1-(-3)
Which is
2

Slope is 2

So plug it in.

y-(-1)= 2(x-(-3)

Solve
y+1= 2x+6
isolate y

Y=2x+5
Your equation is y=2x+5


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2 years ago
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Hey I’ve done some working out, check out the image, I hope it’s right
6 0
3 years ago
Question 2<br> Solve the equation.<br> a +3.7 = 4.1
beks73 [17]

Answer:

.4=a

Step-by-step explanation:

self explanatory

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3 years ago
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