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kifflom [539]
3 years ago
8

Jennifer receives $100 and puts it into her savings account. She adds $0.25 to the account each day for a number of days, d, aft

er that. She writes the expression 100 + 0.25(d – 1) to find the total amount of money in her savings account after ddays. Which statement about her expression is true?
A.
It is the sum of the initial amount and the additional amount after d days.

B.
It is the product of the initial amount and the additional amount after d days.

C. It is the sum of the initial amount and the number of days, 

D.
It is the difference between the initial amount and the additional amount after d days
Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
7 0

Answer:

B.) It is the product of the initial amount and the additional amount after d days.


Step-by-step explanation:

You multiply in the problem to get your answer.


kkurt [141]3 years ago
6 0

Answer:

A. It is the sum of the initial amount and the additional amount after d days.

Step-by-step explanation:

We have been given an expression 100+0.25(d-1), which gives the total amount of money in Jennifer's savings account after d days.

Since Jennifer adds $0.25 each day after first day, so amount in Jennifer's account after d days would be 100 plus 0.25 times d minus 1 day.

Since Jennifer "adds" an amount each day, therefore, the expression is the sum of initial amount and the additional amount after d days.

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Find the value of n that makes ΔDEF ∼ΔXYZ when DE = 4, EF = 5, XY = 4(n+1), YZ = 7n - 1, and ∠E ≅∠Y. n =
dalvyx [7]

Answer:

3

Step-by-step explanation:

It's given that ΔDEF ∼ΔXYZ . So the corresponding sides of both triangles will be proportional to each other.

=  > \frac{de}{xy}  =    \frac{ef}{yz}  =  \frac{df}{xz}

DE = 4 ; XY = 4(n + 1) ; EF = 5 ; YZ = 7n - 1

Putting all these values gives ,

\frac{4}{4(n + 1)}  =  \frac{5}{7n - 1}

=  >  \frac{1}{n + 1}  =  \frac{5}{7n - 1}

=  > 7n - 1 = 5(n + 1)

=  > 7n - 1 = 5n + 5

=  > 7n - 5n = 5 + 1

=  > 2n = 6

=  > n =  \frac{6}{2}  = 3

3 0
3 years ago
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At a baseball game, 3 drinks and 4 hotdogs cost $15.00. At the same game, 3 drinks and 1 hotdog cost $10.50. Find the cost for a
Serhud [2]

Answer:

$3

Step-by-step explanation:

Given data

Let the cost of drinks be x

and the cost of hotdogs be y

so

3x+4y=15-------1

also

3x+y= 10.5------2

solve 1 and 2

 3x+4y=15

-3x+y= 10.5

     3y= 4.5

divide both sides by 3

y= 4.5/3

y= $1.5

Put y= 1.5 in 1

3x+4(1.5)=15

3x+6= 15

3x=15-6

3x= 9

x= 9/3

x= $3

Hence the cost of a drink is $3

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3 years ago
What is 6.42 x 10^23 in standard notation
katrin2010 [14]

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642000000000000000000000

Step-by-step explanation:

8 0
3 years ago
Find the value of g(x)=2-x^2 and f(x)=2x-1 . f(-4)
Ivenika [448]

Answer:

f(-4) = -9

Step-by-step explanation:

f(x)=2x-1

Let x = -4

f(-4)=2*-4-1

      = -8 -1

      = -9

6 0
3 years ago
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Help please will be marked as brainliest if correct and first person to respond
nydimaria [60]

Answer: Unlock code = 76

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

Explanation:

Use a factor tree to find the prime factorization of each value

22 = 2*11

30 = 2*3*5

Both values have '2' in common and this is the largest such value. Therefore, the GCF of 22 and 30 is 2.

So E = 2

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

Since 3 and 8 have no factors in common (other than 1), this means the LCM is 3*8 = 24

We can say that F = 24.

If the numbers had some larger number in common, then we'd have to do a bit more work to find the LCM.

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

As the hint suggests, we'll use the distributive property to show that

3*(7+10) = G + 30

3*7 + 3*10 = G + 30

21 + 30 = G + 30

21 = G .... subtract 30 from both sides; they cancel and go away

G = 21

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

Use the same idea for the other equation as well

5*(3 + H) = 15 + 45

5*3 + 5*H = 15 + 45

15 + 5H = 45

5H = 45 ............ subtract 15 from both sides; they go away

H = 45/5 ......... divide both sides by 5

H = 9

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

The unlock code is

E+F+G+H = 2+24+21+29 = 76

4 0
3 years ago
Read 2 more answers
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