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2 years ago

7

Lauren has a balance of $140. 15 in her checking account. She uses her debit card to pay $85. 75 for a concert ticket. What is t

he balance in her checking account now?

1 answer:

Vikki [24]2 years ago

3 0

$54.4

hope it really helps...!!!

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A person places $103 in an investment account earning an annual rate of 1.9%, compounded continuously. Using the formula V = P e

Advocard [28]

Answer:

$115.36

Step-by-step explanation:

Given data

P=$103

r=1.9%

t= 6 years

The expression for the amount is given as

$V = P e ^{r t}$

substitute

$V = 103*e^{0.019 *6}$

$V = 103*e^{0.114}\\\\V = 103*1.120\\\\V = 115.36\\\\$

Hence the final amount is $115.36

7 0

3 years ago

A coin is to be tossed until a head appears twice in a row. What is the sample space for this experiment? If the coin is fair, w

blsea [12.9K]

Answer:

The sample space would be infinite

{HH, TTTHH, TTTTHH, TTTTTTTHH.......................}

1/8

Step-by-step explanation:

The sample space would be infinite

{HH, TTTHH, TTTTHH, TTTTTTTHH.......................}.

This is because the number of times the coin would be flipped is not specified. So, you can keep flipping the coin forever.

If the coin is tossed four times then the sample space would be

{HHHH HTHH THHH HTHT

HHHT HTTH TTHH THTH

HHTT HHTH TTTH THHT

HTTT TTTT TTHT THTT}

HTHH and TTHH are the only two cases where two consecutive tosses will result in two heads

Probability that the coin will be tossed four times is 2/16 = 1/8

6 0

3 years ago

Nellle has her hair styled by her hair stylist. The styling costs $85 and Nellie wants to leave a 30% tip. There is a tax rate o

Setler [38]

Answer:

115.60

Step-by-step explanation:

for a tip 85x 0.30=25.50

tax 85x0.06=5.10

total extra money 5.10+25.50=30.60

total money payed 85+30.60=115.60

Hope this helped

Please mark Brainlist

4 0

2 years ago

What is the value of the discrinant of the quadratic equation -2x^2=-8x+8

Serga [27]

Answer:

Step-by-step explanation:

-2x²=-8x+8 means : -2x²+8x-8

the discrinant of the quadratic equation is : delta = b²-4ac

when a=-2 and b=8 and c= -8

calculate delta = (8)²-4(-2)(-8) ......continu

7 0

3 years ago

I need help on this question I’m confused I think a &b are the same and c &d are different but I’m not to sure !

Nina [5.8K]

<h3>Answer: They're all the same</h3>

====================================================

Reason:

$2^6$ means we have 6 copies of "2" multiplied out as shown in choice B. That explains how A and B are the same, and we can say

$2^6 = (2*2*2)*(2*2*2)$

The parenthesis are optional, but I find they're handy to count the '2's easier.

----------------

Now notice that

$2^3 = 2*2*2$

So,

$2^6 = (2*2*2)*(2*2*2)\\\\2^6 = (2^3)*(2^3)\\\\2^6 = (2^3)^2\\\\$

The last step is possible because we have two copies of $2^3$ multiplied together.

This shows that choice C is equivalent to A and B.

-------------------

Lastly,

$2^6 = (2*2*2)*(2*2*2)\\\\2^6 = (2*2)*(2*2)*(2*2)\\\\2^6 = (2^2)*(2^2)*(2^2)\\\\2^6 = (2^2)^3\\\\$

The jump to the last step is possible because we have three copies of $2^2$ multiplied together.

This shows choice D is equivalent to the others.

All four expressions are the same.

They represent different ways to say the same number. That number being 64.

3 0

2 years ago