1) C(2
2) A(-4
3) B(4+(2+1)=4+2)+1
4) D(3(2x4)=(3x2)4
5) A(5+6=6+5
6) C(12x1=1x12
7) D(Exponents
8) A(addition and subtraction
9) A(55
10) B(19
Answer:
A 5 <= A <= 40
Step-by-step explanation:
down point is (5, 50)
up point (40, 350)
so 5 <= A <= 40
-2(8m+8) = -16
-16m - 16 = -16
His first mistake lies in his distribution. When multiplying -2 * 8, he made it a positive 16, when he should have made it a negative 16.
-16m - 16 = -16
Add 16 to each side.
-16m = 0
Divide that by -16
m = 0
Answer:
<u>The probability of accepting the lot if none in the lot are defective is </u><u>1</u>.
Step-by-step explanation:
A large lot of crankshaft bearings is accepted if 0 out of 7 are found defective. i.e. the probability of finding a defective crankshaft is 0.
Let X be the number of defective crankshafts. We need to find the probability that X=0. We will use the binomial distribution probability formula:
<u>P(X=x) = ⁿCₓ pˣ qⁿ⁻ˣ</u>
where n = total no. of trials
x = no. of successful trials
p = probability of success
q = probability of failure (1-p)
We have n=7, p=0, q=1.
P(X=0) = ⁷C₀ (0)⁰ (1)⁷⁻⁰
P(X=0) = 1
Answer:
4 1/5
Step-by-step explanation:
25=5x+4.
We move all terms to the left:
25-(5x+4.)=0
We add all the numbers together, and all the variables
-(5x+4)+25=0
We get rid of parentheses
-5x-4+25=0
We add all the numbers together, and all the variables
-5x+21=0
We move all terms containing x to the left, all other terms to the right
-5x=-21
x=-21/-5
x=4+1/5
