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Delvig [45]
3 years ago
12

please helpppppppsoskskskjs

Mathematics
2 answers:
GREYUIT [131]3 years ago
7 0

Answer:

I am not sure but I am correct the simplified form of 12 :2 is 6:1. so 1:6/1

ss7ja [257]3 years ago
4 0

Answer:

1: 1/6 or you can say 1: 0.16

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CosA+cosB+cosC+cos(A+B+C)= cos(A+B).cos(B+C).cos(C+A)
RoseWind [281]

Answer:

cos (A+B+C)

Step-by-step explanation:

as A,B,C, are triangle we have A,B and C as 180

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8 0
3 years ago
write the standard form of the equation of the circle with endpoints of a diameter at the points (9,2) and (-7,5)
AnnyKZ [126]

Answer:

Step-by-step explanation:

Answer:

(x-1)²+(y-3.5)² = 265/4

Step-by-step explanation:

first find the midpoint (center of the circle)

(9+-7)/2, (2+5)/2

(1, 3.5) = center

then distance formula to find diameter

√(9- -7)²+(2-5)²=√256+9 = √265

The radius is half the diameter = (√265)/2

Formula for circle is (x-h)²+(y-k)²=r², where (h, k) is the center

Now you can plug everything in.

(x-1)²+(y-3.5)² = 265/4

4 0
3 years ago
Find the equation of the straight line that passes through the points (1, 10) and (3, 2)
slava [35]

Answer:

y = -4x+14

Step-by-step explanation:

First find the slope

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m = (2-10)/(3-1)

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The slope intercept form of a line is

y = mx+b where m is the slope and b is the y intercept

y = -4x+b

Substitute a point into the equation

10 = -4(1)+b

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14 = b

y = -4x+14

8 0
3 years ago
Read 2 more answers
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shepuryov [24]

Answer:

a21 = -61

Step-by-step explanation:

a_{n}=a_{1}+(n-1)d

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9 = -3d

d = -3

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-1 = a

a21 = -1 + (21 - 1)(-3)

= -61

8 0
3 years ago
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Evan used half of his paycheck for his car payment, then 125 for groceries. If he has 215 left, how much was his paycheck?
Stella [2.4K]

Answer:

680

Step-by-step explanation:

125 + 215 = 340

340+340 = 680

4 0
3 years ago
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