Subtract 3a^2+5ab−4b^2 from 8a^2−6ab+4b^2

Answers

Answer 1

Answer:

Answer:

$\large\boxed{(8a^2-6ab+4b^2)-(3a^2+5ab-4b^2)=5a^2-11ab+8b^2}$

Step-by-step explanation:

$(8a^2-6ab+4b^2)-(3a^2+5ab-4b^2)\n\n=8a^2-6ab+4b^2-3a^2-5ab-(-4b^2)\n\n=8a^2-6ab+4b^2-3a^2-5ab+4b^2\qquad\text{combine like terms}\n\n=(8a^2-3a^2)+(-6ab-5ab)+(4b^2+4b^2)\n\n=5a^2-11ab+8b^2$

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What is the area of this circle with center c, rounded to the nearest tenth?

Answers

The equation for the area of a circle is:

A = \pi r^{2}

The diameter of the circle is 44cm, to get the radius you divide the diameter by 2, or the radius is half of the diameter

\frac{d}{2} = r

\frac{44}{2} = r

22 = r

Now that you have r, you can plug it into the equation

A = \pi (22)^{2}

A = \pi (484)

A = 1520.5 cm²

The answer would be closest to the first multiple choice answer

Answer:

Did anyone get the answer to this?

Step-by-step explanation:

Proofs!! can someone PLEASE HELP

Answers

Answer:

nope sorry

Step-by-step explanation:

idk

the peripherals are the same with the numerators acting the quotient

How to write 15409 in Standard form

Answers

The answer is 15,409.

In three math tests, you score 91,95, and 88 points. How many points must you score on the fourth test to have an A average, or at least 90 points?

Answers

You must score 86 points on the fourth test to have an average, or at least 90 points.

What is average?

The average is calculated as the product of all values divided by all possible values. It can also be described as mean. The mean in statistics is the average value for the particular sample or collection of data. It is determined by dividing the total number of observations by the total number of observations.

Given:

In three math tests,

you score 91,95, and 88 points.

Let n be the score of the fourth test.

To find the average:

The average = (91 + 95 + 88 + n) / 4

90 = (91 + 95 + 88 + n) / 4

(91 + 95 + 88 + n) = 360

n = 360 - 274

n = 86

Therefore, the score of the fourth test is 86.

To learn more about the average;

brainly.com/question/29550341

#SPJ2

That already is a 91.1 grade average. If you want to keep that, get a 90 and above. To find your average, add all your test scores up and divide them by how many scores there are. For instance if you add all those scores up you get 274. Divide it by 3 because there are three scores and there is your average!

After school, Hannah works for 2.8 hours a day, 4 days a week. If her hourly wage is $9.12, how much does shemake each week, rounded to the nearest cent?