Answer:
Step-by-step explanation:
y=2x²-5x-7
y=2x+2
2x²-5x-7=2x+2
2x²-7x-9=0
2x²-9x+2x-9=0
x(2x-9)+1(2x-9)=0
(2 x-9)(x+1)=0
x=9/2 ,-1
y=11 ,0
solutions are (9/2,11),(-1,0)
Answer:
a.) 26< a <u>28 </u>
b.) 4
Step-by-step explanation:
a.) After looking at the age in years collum you can notice that all of ages have a difference of 2. With this you can infer that the missing number is 28.
b.) To find the mean add up all the numbers in the frequency column.
3+2+7+8+0=20
Divide that by the amount of numbers. There are 5 numbers so 20/5=4.
Hope this helps!
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The answer is 0.11 as a decimal.
Answer:
49×66+49×34 = 49× (66+34)
