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3 years ago

5

4th grade math the 8s in 88,000 answers

2 answers:

andreev551 [17]3 years ago

8 0

Answer:

No clue

Step-by-step explanation:

maybe try like explaining more like the value of the 8's?

Tomtit [17]3 years ago

7 0

Explain more are you trying to figure out how much the 8s are worth in the number

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The simple interest on $15,000 for 4 years<br>is $8, 100. Calculate the rate percent per annum.

insens350 [35]

Answer:

13.5%

Step-by-step explanation:

8100 interest/4 years=2,025 interest per year

principal x interest rate=interest per year

15000 x interest rate=2025

interest rate =2025/15000

interest rate=.135 or 13.5%

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2 years ago

Classify the number as rational or irrational.

lara [203]

- Rational
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3 years ago

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Given the following three points, find by the hand the quadratic function they represent (0,6, (2,16, (3,33)

Lisa [10]

Answer:

$f(x) = 4x^2 - 3x + 6$

Step-by-step explanation:

Quadratic function is given as $f(x) = ax^2 + bx + c$

Let's find a, b and c:

Substituting (0, 6):

$6 = a(0)^2 + b(0) + c$

$6 = 0 + 0 + c$

$c = 6$

Now that we know the value of c, let's derive 2 system of equations we would use to solve for a and b simultaneously as follows.

Substituting (2, 16), and c = 6

$f(x) = ax^2 + bx + c$

$16 = a(2)^2 + b(2) + 6$

$16 = 4a + 2b + 6$

$16 - 6 = 4a + 2b + 6 - 6$

$10 = 4a + 2b$

$10 = 2(2a + b)$

$\frac{10}{2} = \frac{2(2a + b)}{2}$

$5 = 2a + b$

$2a + b = 5$ => (Equation 1)

Substituting (3, 33), and c = 6

$f(x) = ax^2 + bx + x$

$33 = a(3)^2 + b(3) + 6$

$33 = 9a + 3b + 6$

$33 - 6 = 9a + 3b + 6 - 6$

$27 = 9a + 3b$

$27 = 3(3a + b)$

$\frac{27}{3} = \frac{3(3a + b)}{3}$

$9 = 3a + b$

$3a + b = 9$ => (Equation 2)

Subtract equation 1 from equation 2 to solve simultaneously for a and b.

$3a + b = 9$

$2a + b = 5$

$a = 4$

Replace a with 4 in equation 2.

$2a + b = 5$

$2(4) + b = 5$

$8 + b = 5$

$8 + b - 8 = 5 - 8$

$b = -3$

The quadratic function that represents the given 3 points would be as follows:

$f(x) = ax^2 + bx + c$

$f(x) = (4)x^2 + (-3)x + 6$

$f(x) = 4x^2 - 3x + 6$

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3 years ago

Is the data set "distance a baseball travels after being hit" quantitative or qualitative? If it is quantitative, is it discrete

Komok [63]

<span>quantitative, continuous</span>

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3 years ago

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Circle O is shown. Tangents B C and B A intersect at point B outside of the circle. The measure of the first arc formed is 146 d

kaheart [24]

Circle O represents The amount of Degrees,
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2 years ago

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