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3 years ago

WILL GIVE BRAINLIEST!!!!!

Mathematics

1 answer:

anzhelika [568]3 years ago

6 0

I think this has to do with P=IRT where P is the amount, I is the interest amount R is the interest rate and T is the time so we plug in the numbers we have and get $30 for interest amount so our total amount would be 530.

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If i= square root of -1, what is the value of i 3?

Furkat [3]

If i = √-1 ,

then ...

i² = (√-1)² = -1

i³ = - √-1 = -i <== the answer to the question

i⁴ = (i²) · (i²) = (-1) · (-1) = 1

and then the whole thing starts over again, for higher powers of i .

6 0

4 years ago

Read 2 more answers

Which measurement is the most precise; 2 in., 2.5 in., 2.675 in., or 2 3/4 in. ?

Alla [95]

Answer:

2.675

Step-by-step explanation:

The more decimal points there are, the more precise it gets.

2 = 2

2.5 = 2.5

2.675 = 2.675

2 3/4 = 2.75

Since 2.675 has three decimal places, it is the most precise.

3 0

3 years ago

Read 2 more answers

Help!! algebra two!! c-h :)

kotegsom [21]

Answer:

c. (2x + 3y)² = (2x)² + 2(2x)(3y) + (3y)²

d. (w - 1)(1 + w + w²) =  w³ - 1

e. a² - 16 = (a + 4)(a - 4)

f. (2x + 5y)(2x - 5y) = 4x² - 25y²

g. (2²¹ - 1)(2²¹ + 1) = 2⁴² - 1

h. [(x - y) - 3][(x - y) + 3] = (x - y)² - 9

Step-by-step explanation:

c. Although this expression, when squared, is really 4x² + 12xy + 9y², they just splitted it up into several more terms. In this last blank should be a 9y², but instead, they took the square root of the term, which is 3y, and set the square outside of the parentheses.

*I bet that was what made it confusing, but have no fear. The mathematics tutor is here.

d. This is similar to the Quadratic Equation [y = Ax² + Bx + C] where you can, what I like to call... FOIL it, however, you have an extended amount of terms. Although you still have to FOIL it, it is just a unique procedure. This time, you have to one-by-one, take each term in the first set of parentheses [-1 and w] and multiply them by the second all three terms in the second set of parentheses.

e. This is a piece of cake because we know BOTH square roots of 16 and we are multiplying what are called conjugates.

f. Again, we are multiplying conjugates, so we just multiply the first and last two terms in each set of parentheses.

g. Again, we are multiplying conjugates EXCEPT now, we have exponents in each set of parentheses. Whenever you multiply terms, you add the exponents and your base remains the same, which is what you see in the above answer.

h. For the final exercise, we are multiplying conjugates again, and we obviously can see what fills that blank because there are TWO IDENTICAL EXPRESSIONS that are being multiplied, which in this case are being "squared", and that expression is x - y. It appears twice, so that is a giveaway.

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

**Conjugates are IDENTICAL expressions with OPPOSITE operation symbols. Whenever you multiply conjugates, just add the first and last two terms in both sets of parentheses because when you FOIL, the midst term will ALWAYS result in zero.

8 0

4 years ago

Ron runs a hot question ( need answer)

marta [7]

Answer:

The price of a hot dog decreases between the third and sixth month:

True

The price of a hot dog increases between the sixth and ninth month:

False

The price of a hot dog increases constantly between the ninth and twelfth month:

True

Hope this helps! If anything is wrong, feel free to comment down below so I can change my answer for future users!

6 0

3 years ago

chris can run at a constant speed of 12 km/h. How ling will it take him to run from his home to the park, a distance of 0.8 km?

densk [106]

Recall that distance = speed times time. Thus, time = distance / speed.

Here:

time = distance / speed = 0.8 km / 12 km/hr = 1/15 hr.

Note that 1/15 hr = 1/15 (60 min) = 4 minutes

8 0

3 years ago

Read 2 more answers