Explanation:
You want to first to substitute to form 3 equations.
5=4a+2b+c
12=9a+3b+c
-4=a-b+c
Now solve with whatever way you fell comfortable, I'm going to use elimination.
First eliminate c
7=5a+b
16=8a+4b --> 4=2a+b
Then I'll eliminate b,
3=3a
a=1
Now solve for b and c
7=5+b
b=2
1-2+c=-4
c=-3
Now for the equation:
y=x^2+2b-3
Hope this helps!
Answer:
The Answer is A. 1.4 x 10^5
Step-by-step explanation:
Numbers in Scientific notation have the first number between 1 and 9 and then the decimal, followed by the rest of the numbers. Find the power of 10 by moving the decimal one place a time from right to left until the decimal is between the last number and the next to last.
B. is wrong because the number is .32 x 10^3 instead of 3.2 x 10^2
C. is wrong because it is 2 to the 10th power (2^10) instead of a power of 10
D is wrong because the number is 11.2 x 10^1 instead of 1.12 x 10^2
Hope this helps!! Have an Awesome Day!! :-)
Answer: 7.48
Step-by-step explanation:
Linear graph. take the point at 3 and multiply it by 2
3.74 x 2 = 7.48
Answer:
Part 1) ∠MJK and ∠PJR have a unequal measures
Part 2) ∠KJL and ∠MJL have a unequal measures
Part 3) ∠LJP and ∠NJR have a equal measures
Part 4) ∠MJP and ∠PJR have a equal measures
Part 5) ∠KJR and ∠MJP have a unequal measures
Step-by-step explanation:
Part 1) ∠MJK and ∠PJR
we have that
Observing the figure
∠MJK=90°
∠PJR=48°+46°=94°
therefore
∠MJK and ∠PJR have a unequal measures
Part 2) ∠KJL and ∠MJL
we have that
Observing the figure
∠KJL=42°
∠MJL=90°-42°=48°
therefore
∠KJL and ∠MJL have a unequal measures
Part 3) ∠LJP and ∠NJR
we have that
Observing the figure
∠LJP=48°+46°+48°=142°
∠NJR=48°+48°+46°=142°
therefore
∠LJP and ∠NJR have a equal measures
Part 4) ∠MJP and ∠PJR
we have that
Observing the figure
∠MJP=46°+48°=94°
∠PJR=46°+48°=94°
therefore
∠MJP and ∠PJR have a equal measures
Part 5) ∠KJR and ∠MJP
we have that
Observing the figure
∠KJR=90°+46°+48°+48°+46°=278°
∠MJP=46°+48°=94°
therefore
∠KJR and ∠MJP have a unequal measures
Sally will be 12 in 4 years, because bob is 28 and sally is 8; then in two years bob will be 30, while sally is 10 making bob 3 times her age!