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