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Law Incorporation [45]
2 years ago
13

Complete the steps in solving the quadratic function 7x – 9 = 7x2 – 49x by completing the square.

Mathematics
1 answer:
Lena [83]2 years ago
6 0

Answer:

it's actually 28+/-√721/7

Step-by-step explanation:

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Rita's mother is 4 times as old as she is. Her grandmother is twice as old as her mother. If the sum of their age is 194, how ol
romanna [79]
R=rita's age
m=mother's age
g=grandmother's age



mother is 4 times as old as rita
m=4r

grandmother is 2 times as old as mother
g=2m

sum is 104

r+m+g=104
subsitute 4r for m and 2m for g
r+4r+2m=104
subsitute 4r for m
r+4r+2(4r)=104
r+4r+8r=104
13r=104
divide both sides by 13
r=8
4r=m=32
8r=2m=g=64


rita is 8
mother is 32
grandmother is 64
7 0
3 years ago
Understanding this proof for the proposition "For all integers a, gcd(9a+4, 2a+1) = 1.
olganol [36]

First line because 4(2a+1)=8a+4 and 9a+4-(8a+4)= a


Second line because a times 2 =2a and 2a+1-2a=1


<span>Although the second equality is more or less obvious since 2a+1 leaves a remainder of 1 when divided by a.</span>

3 0
4 years ago
Can Somebody help me real quick?
Eddi Din [679]

Answer:The answer is (4 x -1)

Step-by-step explanation: How to solve this is tell the teacher I don’t know

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3 years ago
Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows
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Answer:.

Step-by-step explanation:

7 0
3 years ago
What is the difference between a pot and a saucepan?
andriy [413]
The main differences are in the usage and in the design. Although they look similar, pots usually have 2 smaller handles, one on each side, while saucepans usually have one longer handle. The usage part differs because pots are used mostly to boil things like water or pasta or similar things inside, while a sauce pan is usually used for making sauces because reduction is much easier since you can move the saucepan as you see fit while you stir with the other hand.
6 0
4 years ago
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