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3 years ago

I need help with this math question

Mathematics

1 answer:

givi [52]3 years ago

7 0

Answer:

a.) y = 3/(2ˣ)

b.) y = 1/(2ˣ)

c.) y = (π^π)ˣ

d.) y = (1/27)(1/√(3))ˣ

e.) y = .002908/(.119025ˣ)

f.) y = .00000004808/(.0413ˣ)

Step-by-step explanation:

Concept need to know is:

a negative exponent will flip the numerator with the denominator
a fraction as an exponent is just a root. so if the exponent is x^(1/2) then the root is 2 and x^(1/3) is a cube root

adding and subtracting exponent is the same thing as multiplying the same base.
so x^(1+2) = (x^1)(x^2)

and x^(1-2) = (x^1)(x^-2)

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Given m||n, find the value of x.<br> (9x-5)(6x+20)

xxTIMURxx [149]

Answer:

5/9 & -10/3

Step-by-step explanation:

Set each to 0 and solve:

9x-5 = 0

9x=5

x=5/9

6x+20=0

6x=-20

x=-20/6

x= -10/3 or -3 1/3

7 0

3 years ago

5 1/8+5/6+5/12=6.375 what is 6.375 as a fraction? A 6 3/4. B.6 3/8. C6 3/12. D 6 3/24 please help

vovikov84 [41]

B. 6 3/8
How do we get this? Simple:
6.375--->We already know that 6 will be the whole number in the mixed fraction.

We then move on to represent the decimal part as the fraction. 375 will be the numerator. The denominator depends on how many decimal places we have (3 in this case, since there are 3 numbers after the period--375). Each decimal place represents a 10 (or a 0 after the 1). So we get that our denominator will be a 1000.

We get the following fraction
6 375/1000

We simplify. Let's start by dividing numerator and denominator by 5:
6 75/200

Let's divide by 5 again:
6 15/40

Let's divide by 5 again:
6 3/8

Or we could have divide by 125 from the get go and get the same results.

3 0

3 years ago

4th grade math please help

tiny-mole [99]

Answer:

Number one is D and Number 3 is also D

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I WILL MARK BRAINLIST!!

Soloha48 [4]

Answer:

For $(2x^2 + 8x - 8)$ , the group is CLOSED as it a polynomial.

Step-by-step explanation:

Here, the given polynomials are:

$P(x)=(5x^2+2x-6)\\Q(x)=(3x^2-6x+2)$

Now, a group G is said to be <u>CLOSED UNDER SUBTRACTION</u> if,

a and b are he elements of G ⇒ (a-b) is ALSO AN ELEMENT of G

Now, here:

$R(x) = P(x) - Q(x) = (5x^2+2x-6) - (3x^2-6x+2) = (2x^2 + 8x - 8)$

or, $R(x) = (2x^2 + 8x - 8)$

Also, R(x) is a POLYNOMIAL.

So, R(x) is an Element of group G.

So, the set G of polynomials.

Hence, for the polynomial $(2x^2 + 8x - 8)$ , it will be a polynomial the group is CLOSED.

3 0

3 years ago

Read 2 more answers

Tony Giacomin deposited $1600 on July 3rd in a special investment account which earns 13% p.A. Simple interest. On August 17th h

Burka [1]

Answer:

$248.75

Step-by-step explanation:

We are told that the interest rate is 13% per Annum = 13% per year

Hence, the interest rate in a month = 13% /12

= 1.0833333333% in a month

Tony Giacomin deposited $1600 on July 3rd in a special investment account which earns 13% p.A. Simple interest.

Interest = Principal × rate × time

Rate = 13% = 0.13

Time = July 3rd - November 12 = 132 days

= $1600 × 0.13 × 132/365

= $75.221917808

On August 17th he deposited another $5600 in the account. If he closed the account on November 12th

Interest = Principal × rate × time

Rate = 13% = 0.13

Time = August 17th - November 12 = 87 days

= $5600 × 0.13 × 87/365

= $173.52328767123288

The next step would be to add these Interests together

$173.52328767123288 + $75.221917808

= $248.74520548

Approximately ≈ $248.75

Therefore, his investment that he has earned over this period of time is $248.75

8 0

3 years ago