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3 years ago

Consider the following quadric equation

Mathematics

1 answer:

a_sh-v [17]3 years ago

5 0

Answer:

21x^2 - 23x - 20 = 0

Step-by-step explanation:

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!

Softa [21]

The answer is :

( y^2 +7 )^2

8 0

3 years ago

Of 560 marbles in a bag, 65% are red and the rest are blue. After 28 red marbles are replaced with blue ones, how many blue marb

jonny [76]

Answer: The answer is 400 blue marbles.

Step-by-step explanation: Given that there are 560 marbles in a bag, out of which 65% are red and rest are blue.

So, number of red marbles is

$n_r=65\%\times 560=\dfrac{65}{100}\times 560=364,$

and number of blue marbles is

$n_b=560-364=196.$

Now, if 28 red marbles are replaced by blue marbles, the the new number of red and blue marbles will be

$n_r^\prime=364-28=336~~~\textup{and}~~~n_b^\prime=196+28=224.$

Now, to get 65% of the marbles blue, we need to add some more blue marbles to the bag. Let 'x' number of blue marbles are added to the bag, then

$65\%\times (560+x)=224+x\\\\\Rightarrow \dfrac{65}{100}\times (560+x)=224+x\\\\\Rightarrow 13(560+x)=20(224+x)\\\\\Rightarrow 7280+13x=4480+20x\\\\\Rightarrow 7x=2800\\\\\Rightarrow x=400.$

Thus, 400 blue marbles need to be added to the bag.

5 0

3 years ago

Read 2 more answers

“Seven less than a number squared”

Arte-miy333 [17]

Answer:

7-x^2

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Factor 54+2754+27 using the GCF.

torisob [31]

~54: 1,2,3,6,9,27~

~2,754:1,2,3,6,9,17,18,27,34,51,54,81,102,153,162,
306,459, 918,1377,2754~

~27: 1,3,9,27~

GCF: 27

Your answer would be for the GCF would be 27

6 0

3 years ago

Help me please I need help

Lemur [1.5K]

It actualy gives you the minimum of the function
it helps you because fonding the minimum y will give you the range

4 0

3 years ago