Answer:
x =-2
Step-by-step explanation:
log 15 = log(7 - 4x)
The terms inside the log functions must be the same
15 = 7 -4x
Subtract 7 from each side
15-7 = 7-4x-7
8 = -4x
Divide each side by -4
8/-4 =-4x/-4
-2 =x
Hi
2/3 y+y-4=31
Simplify both sides of the equation
2/3 y-4=31
Combine like terms
(2/3 y+y)+(-4)=31
5/3 y-4=31
Add 4 to both sides
5/3 y-4+4=31+4
5/3 y=35
Multiply both sides 3/5
(3/5)*(5/3 y)=(3/5)*35
y=21
I hope that's help !
Hello there! Thank you for asking your question here at Brainly! I will be assisting you with answering this question, and will be teaching you how to handle it on your own in the future.
We have 350 total keychains, in which 10% are yellow, 3/5 are green, and x are red. We will be solving for red, but we need to subtract 10% and 3/5 from 350.
So, let's find out how much 10% of 350 is.
Since 10% is equivalent to 1/10, we can divide 350 by 10 to find how many yellow key chains there are.
350 / 10 = 35.
There are 35 yellow key chains. We can subtract this from 350 to narrow it down.
350 - 35 = 315.
Now, let's find how much 3/5 of 350 is, and subtract it from our new number (315).
Divide 350 by 5, and then multiply that quotient by 3.
350 / 5 = 70.
70 x 3 = 210.
We have 210 green key chains. Now let's subtract that from 315. This will give us the remaining key chains - which are red.
315 - 210 = 105.
There are 105 red key chains.
I hope this helps!
Given the circumference formula for a circle, one can easily find the value of the ray 16:(2×3.14)
Knowing that and using the formula for the volume of a circle V= A×h where A is the surface and h the hight, one would be anxious to find out wether
V=3.14×(2.55)^2×10 could be expressed by 204
