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SIZIF [17.4K]
2 years ago
13

PLZZZ HELP, i have limited time and i will give brainliest. Q1 Selena has placed $500 in an account that pays simple interest of

5 percent annually. Selena will have earned $ _.00 in interest by the end of the year. Q2 Suki has placed $800 in an account that pays 4 percent interest compounded quarterly. At the end of two years (eight quarters), the balance in the account will be $__ . That means Suki will have earned $ in interest during that time. (Round your answers to the nearest cent.) What will be the balance in the account at the end of two years (eight quarters)? How much interest will Suki have earned during that time? (Round your answers to the nearest cent.) Q3 Jessica is considering putting $50 into a money market account that pays a 4 percent annual interest rate. It will take year(s) for the money to double to $100. (Use the Rule of 72 to find the answer.) every ____ mark you put the answer in that place. plz label the answer with Q1 etc
Mathematics
1 answer:
Sergio039 [100]2 years ago
6 0

Hey next time use your calculator, if you can.

Since these problems are using this equation : A(mount) = P(rinciple) * ( 1 + R(ate) ^ {t(ime)} ) we can derive into this immediately.

Q1: 525 (Try it, don't copy, it's not nice ;) ).

Q2: 865.28

Q3: By using logs: 0.0566 years. (I'm not sure on that one...) Sry

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One way to solve the system is to _____________ a variable.
Ivahew [28]

One way to solve the system is to <u>substitute</u> a variable.

<u>Explanation:</u>

One approach to solve an equation is by substitution of one variable. Right now, a condition for one factor, at that point substitute that arrangement in the other condition, and explain. All value(s) of the variable(s) that fulfills a condition, disparity, arrangement of conditions, or arrangement of imbalances.

The technique for tackling "by substitution" works by settling one of the conditions (you pick which one) for one of the factors (you pick which one), and afterward stopping this go into the other condition, "subbing" for the picked variable and fathoming for the other. At that point you back-explain for the principal variable.

8 0
2 years ago
Read 2 more answers
A 2-column table with 6 rows. The first column is labeled miles driven with entries 27, 65, 83, 109, 142, 175. The second column
Helen [10]

Answer:

1) The linear regression model is y = -0.0348·x + 13.989

2) The correlation coefficient is -0.0725

3) The strength of the model is strong - association

Step-by-step explanation:

1)

                         X            Y          XY       X²

                         27            13           351          729

                         65             12          780         4225

                         83              11          913         6889

                         109            10          1090      11881

                         142            9            1278     20164

                         175              8           1400      30625

                ∑      601              63 5812 74513

From y = ax + b, we have

a = \frac{n\sum xy - \sum x\sum y }{n\sum x^{2}-\left (\sum x  \right )^{2}} = \frac{6 \times 5812  - 601 \times 63}{6 \times 74513-601^{2}} = - 0.0348

b = 1/n(∑y -a∑x) = 1/6(63 - (0.0348)×601) = 13.989

Therefore, the linear regression model is y = -0.0348·x + 13.989

2)

r = \frac{n\sum xy - \sum x\sum y }{\sqrt{[n\sum x^{2}-\left (\sum x  \right )^{2}] [n\sum y^{2}-\left (\sum y  \right )^{2}]}}  = \frac{6 \times 5812  - 601 \times 63}{\sqrt{[6 \times 74513-601^{2}] [6  \times 3969 - 63^2]} } = - 0.0725

3) The strength is - association.

5 0
2 years ago
Read 2 more answers
Sam gave jen 1/2 of his jujubes .jen ate 1/2 ofthe jujubes and gave rest to kyle.kyle kept 8 of the jujubes and gave the last 10
erastovalidia [21]
Let x = the # jujubes Sam had
he gave x/2 to jen
jen eats half of it  =    1/2(x/2) =    x/4
the remaining  x/4 he gave to kyle
kyle kept 8 and gave 10 to Kim
so
             x/4 - 8 = 10
             x/4 = 18
             x =72
thus    jen had 36 jujubes
jen eat    18  jujubes
3 0
2 years ago
A snake tank measures 1.8 m x 0.5 m x 0.5 m. What is the surface area of the tank including the top? Use the formula: SA = 2hl+2
olganol [36]

Answer:

4.1

Step-by-step explanation:

1.8 x 0.5 = 0.9

0.5 x 0.5 = 0.25

2(0.9 + 0.9 + 0.25) = 2(1.8 + 0.25) = 2(2.05)

2 x 2.05 = 4.1

Therefore the answer is 4.1

I hope that was helpful!

8 0
2 years ago
luke paid 30 percent less for a used car than its original price of $3,500. how much did luke pay for the car?​
serg [7]

Answer:

Im not sure ok

Step-by-step explanation:

Im trying to solve too

5 0
2 years ago
Read 2 more answers
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