2x+4y=16
x-7=-4y
4y=16-2x
<span>4y=16-2(-4y+7)
4y=16+8y-14
-4y=2
-4y/-4=2/-4
<u>y=-0,5</u>
2x=16-4(-0,5)
2x=16+2
2x/2=18/2
<u>x=9
</u>
C</span>
2* radius* pie
Step-by-step explanation:
first you times 2 by the radius, then you times that answer by 3.14.
hoped this helped a little
For 27 since all they did was add a zero on the end of the first number (9,554), you just add that zero to the end of you quotient to make 95,540 / 562 = 170
For 28 the answer is 110.59 (rounded to nearest hundredth) because you take the distance between the moon and earth and divide it by the width of the moon 384,400 / 3,476 = 110.58688
Hope this helps!
If y decreases as x increases, we are looking for a negative slope. The r = -0.87 tells us that the data points correlate relatively well. The closer the decimal is to 1 or -1, the better. The answer is A.
You can set up an equality:
40/160 = 225/x
Cross multiply:
40x = 160(225)
Evaluate:
40x = 36000
Isolate x:
x = 900.
So, 900 batteries are required for 225 calculators.
Hope this helped!! xx
