You'll have to work out the area under the normal curve that maps to the range 2975-3050. So we have to scale the numbers to the world of the standard normal curve.
Step 1: subtract the mean, so that 0 is our mean. This means the range changes to -25..+50. (can you see that I subtracted 3000?)
Step 2: Divide by the standard deviation 38, so that the new sd becomes 1.
This means our range becomes -0.66 to 1.32.
Now we have values that we can lookup in the standard normal table. This has to happen in two steps. First we lookup the probability for Z < 1.32, then we subtract the probability for Z<-0.66.
0.9066 - 0.2546 = <span>0.652 or 65.2%</span>
a) 6x - 5y = 10x + 7 SOLVING FOR X:
6x-5y=10x+7
−5y=10x+7−6x
−5y=4x+7
−5y−7=4x next divide both sides by four and switch sides
a) 6x - 5y = 10x + 7 SOLVING FOR Y:
6x-5y=10x+7
−5y=10x+7−6x then simplify
−5y=4x+7, now divide both sides by negative five
b) -4 +(-3) -(-9)
-4+(-3)-(-9) Remove parentheses and simplify.
−4−3+9=−7+9=2
Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! :-)
- Cutiepatutie ☺❀❤
7 tenths means 0.7
we want 9 times as much as 7 tenths. This means that we will multiply the 7 tenths by 9 to get the answer.
This will give us the following result:
0.7 x 9 = 6.3
Therefore: 9 times as much as 7 tenths is 6.3
Answer:
Alright use the slope formula to find the slope m.
m = - 2/3 Hope this helps :)
Step-by-step explanation:
Step 1: Slope is equal to the change in y over the change in x, or rise over run
Step 2: The Change in x is equal t the difference in x - coordinates (also called rise)
Step 3: Substitute the values of x and y into the equation to find the slope, and last but not least simplify
Hope this helps :)