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Sergio039 [100]
3 years ago
9

Idk how people understand algebra help me

Mathematics
1 answer:
Arturiano [62]3 years ago
3 0
To factor by a binomial, I like to use synthetic division (You can use long division but it is more work).


We are actually given a binomial because if -2 is a zero, the binomial is represented by (x- (-2)) or (x+2)

To use synthetic division,

-2 | 1  2  -9  -18
         -2   0   18
____________
      1  0  -9    0

Therefore, you know the constants of the equation which is equal to

1x^2 +0x -9x +0

x^2-9x

The full equation is equal to (x+2)(x^2-9x)
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The coffee counter charges ?"$11.00" per pound for kenyan french roast coffee and ?"$13.00" per pound for sumatra coffee. How mu
zloy xaker [14]

Answer: The answer is 13 ponds of each type should be used.

Step-by-step explanation:  Given that the coffee counter charges $11.00 per pound for kenyan french roast coffee and $13.00 per pound for sumatra coffee. We are to find the quantity of each type that should be used to make a 26 pound blend that sells for $12.00 per pound.

Let 'x' pound and 'y' pound of  kenyan french roast coffee and sumatra coffee be used in the mixture of 26 pound.

So, we have

x+y=26,~~~~~~~~~~~~~~~~~~~~~~(A)\\\\11x+13y=12\times 26.~~~~~~~~~~(B)

Multiplying equation (A) by 11 and subtracting from equation (B), we have

13y-11y=12\times26-11\times26\\\\\Rightarrow 2y=26\\\\\Rightarrow y=13,

and from equation (A),

x=26-13=13.

Thus, 13 pounds of each type of coffee should be used.

8 0
3 years ago
You have $142.26 in a bank account. the bank requires you have to at least $30 in your account or else you will be charged a fee
kodGreya [7K]

$142.26-$30=$112.26

6 0
3 years ago
$57.60. The tax is 7.5%. What is the tax amount for this meal?
KonstantinChe [14]

To find the tax amount, you would multiply $57.60 by 0.075 (7.5% in decimal form).

\$57.60\times 0.075=\$4.32

<u>The tax for this meal is $4.32.</u>

5 0
4 years ago
Read 2 more answers
What is t ? 3t - 2/3=1+t
Levart [38]
T=1.66/2 or it can be t=1 2/3 ÷ 2
7 0
3 years ago
The base of a rectangle measures 8 feet and the altitude measures 5 feet. Find to the nearest degree, the measure of the angle t
Pani-rosa [81]
We can say that the 8 foot base is the adjacent side.
We can say that the 5 foot altitude is the opposite side.
the tangent of the base angle = 5/8 = .625
Therefore the angle equals
arc tangent (.625) = 32.005 degrees


5 0
4 years ago
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