4 years ago

What is 0.75 times 10 divided by 2

Mathematics

1 answer:

Len [333]4 years ago

7 0

I Would Say 3.75

You Might Want To Check It...But I Think That Is It

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I need 10x+3y=19 and y=2x+5 solved algebraically

taurus [48]

Y=2x+5
sub 2x+5 for y in other equaiton
10x+3(2x+5)=19
distribute
10x+6x+15=19
minus 15 from both sides
16x=4
divide both sides by 16
x=1/4
sub back

y=2x+5
y=2(1/4)+5
y=1/2+5
y=5.5=11/2

solution is (1/4,11/2) or in decimal, (0.25,5.5)

8 0

4 years ago

Write the equation of the circle passing through the origin with center (– 9, –12) .

malfutka [58]

Answer:

$(x+9)^{2} +(y+12)^{2}=225$

Step-by-step explanation:

Remember that the center of a circle is written in (h,k) format. So h= - 9 and k = -12. Also, the distance between those two points is 15 units, so r = 15.

So the formula $(x-h)^{2} +(y-k)^{2}=r^{2}$