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2 years ago

10

Given a = 4, b = -2 and c = 8, evaluate ab - bc. -24 -4 8

1 answer:

Mrac [35]2 years ago

8 0

(4*-2)-(-2*8)=
-8--16=8

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What is the length of b

oksian1 [2.3K]

Answer:

b = 24

Step-by-step explanation:

<u>Concepts</u>

The Pythagorean Theorem states that the sum of the squares of the two other sides on a right triangle is equal to hypotenuse (longest side) squared. It can be represented by the equation $a^2+b^2=c^2$ . We can also use this formula to solve for the other two legs in the right triangle.

<u>Application</u>

In this case, we're asked to find the length of b in the right triangle, given c as 26 and a as 10. Now, we just apply the formula and solve for b.

<u>Solution</u>

Step 1: Set up equation and simplify.

$10^2+b^2=26^2$
$100+b^2=676$

Step 2: Subtract 100 from both sides.

$100+b^2-100=676-100$
$b^2=576$

Step 3: Take square root of both sides.

$\sqrt{b^2} =\sqrt{576}$
$b=24$

Therefore, b = 24.

4 0

1 year ago

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HELLLLLPPP I WILL GIVE BRAINLIEST ANSWER!!!!! I NEED DONE BY 11:00pm

mote1985 [20]

1) 4(6j+1+8j) = 16j + 4 + 32j
2) 16j + 4 + 32j = 48j + 4

4 0

3 years ago

A farmer owns 1,000 acres. The farmer buys farms of 120 acres, 160 acres, and 700 acres and sells one farm of 190 acres. How man

vredina [299]

Answer : The area of land a farmer own now is, 1790 acres

Step-by-step explanation :

Area of land a farmer owns = 1000 acres

Total area of land farmer buy = 120 acres + 160 acres + 700 acres

Total area of land farmer buy = 980 acres

Area of land a farmer sells = 190 acres

Thus, the remaining area of land a farmer has = Total area of land farmer buy - Area of land a farmer sells

The remaining area of land a farmer has = 980 acres - 190 acres

The remaining area of land a farmer has = 790 acres

Now we have to determine the area of land a farmer own now.

Area of land a farmer own now = 1000 acres + 790 acres

Area of land a farmer own now = 1790 acres

Therefore, the area of land a farmer own now is, 1790 acres

3 0

3 years ago

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What 12/12+12/12+8/12=

Fudgin [204]

Answer:

8/3

Step-by-step explanation:

3 0

3 years ago

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Principal Lopez asked her 500 students to vote on the school's annual gift. 300 students voted to donate a telescope for the sci

Maksim231197 [3]

Using the percentage concept, it is found that 60% of the students voted to donate a telescope.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

In this problem:

The total amount is the number of students, which is of b = 500.

300 voted to donate, hence a = 300.

The <em>percentage </em>is given by:

$P = \frac{300}{500} \times 100\% = 60\%$

60% of the students voted to donate a telescope.

More can be learned about the percentage concept at brainly.com/question/10491646

5 0

1 year ago