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3 years ago

Heres sum points for yall

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

4 0

Answer:

OMGGGG TYYY SO MUCHHH HAVE A NICE DAYYY LOVEEE YEEEAA<33

Step-by-step explanation:

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A department store sells a pair of shoes with an 87% markup. If the store-bought the pair of shoes for $55.25, what is the selli

olga_2 [115]

Answer: $103
Explanation:
Stores will markup an item to make a profit so this question is asking how much they will be selling the shoes to the customer.
To solve this problem we will start by multiplying the price the store payed for (55.25) by the percentage in decimal form (.87)
55.25•0.87=48.0675

We then add the markup to the price payed for the shoes.
55.25+48.0675=103.3175

When rounding to the nearest dollar we look at the digit in the tens place (3) and since 3 is < 5 we round the final price to $103

4 0

3 years ago

What is the value of f(x)=-3.25x 22.41 at x=-4.2

Gennadij [26K]

F(x)=-3.25x +22.41
f(-4.2)= 3.25(-4.2)+22.41 = 8.76

4 0

4 years ago

Clark and Lana take a 30-year home mortgage of $128,000 at 7.8%, compounded monthly. They make their regular monthly payments fo

svp [43]

Answer:

Step-by-step explanation:

From the given information:

The present value of the house = 128000

interest rate compounded monthly r = 7.8% = 0.078

number of months in a year n= 12

duration of time t = 30 years

To find their regular monthly payment, we have:

$PV = P \begin {bmatrix} \dfrac{1 - (1 + \dfrac{r}{n})^{-nt}}{\dfrac{r}{n}} \end {bmatrix}$

$128000 = P \begin {bmatrix} \dfrac{1 - (1 + \dfrac{0.078}{12})^{- 12*30}}{\dfrac{0.078}{12}} \end {bmatrix}$

128000 = 138.914 P

P = 128000/138.914

P = $921.433

∴ Their regular monthly payment P = $921.433

To find the unpaid balance when they begin paying the $1400.

when they begin the payment ,

t = 30 year - 5years

t= 25 years

$PV= 921.433 \begin {bmatrix} \dfrac{1 - (1 - \dfrac{0.078}{12})^{25*30}}{\dfrac{0.078}{12}} \end {bmatrix}$

PV = $121718.2714

C) In order to estimate how many payments of $1400 it will take to pay off the loan, we have:

$121718.2714 = \begin {bmatrix} \dfrac{1300 (1 - \dfrac{12.078}{12}))^{-nt}}{\dfrac{0.078}{12}} \end {bmatrix}$

$121718.2714 = 200000 \begin {bmatrix} (1 - \dfrac{12.078}{12}))^{-nt} \end {bmatrix}$

$\dfrac{121718.2714}{200000 } = \begin {bmatrix} (1 - \dfrac{12.078}{12}))^{-nt} \end {bmatrix}$

$0.60859 = \begin {bmatrix} (1 - \dfrac{12}{12.078}))^{nt} \end {bmatrix}$

$0.60859 = (0.006458)^{nt}$

$nt = \dfrac{0.60859}{0.006458}$

nt = 94.238 payments is required to pay off the loan.

How much interest will they save by paying the loan using the number of payments from part (c)?

The total amount of interest payed on $921.433 = 921.433 × 30(12) years

= 331715.88

The total amount paid using 921.433 and 1300 = (921.433 × 60 )+( 1300 + 94.238)

= 177795.38

The amount of interest saved = 331715.88 - 177795.38

The amount of interest saved = $153920.5

6 0

4 years ago

Interior angles of quadrilaterals<br><br>the sum of the four angles of any quadrilateral is 360

MaRussiya [10]

Answers:
angle x= E. 118°
angle m= 131°

explanation:
the sum of the four angles of any quadrilateral
is 360

8 0

3 years ago

You can construct congruent triangles if you know which of the following? Select two answers.

lora16 [44]

Answer: E and D

Step-by-step explanation: E (SAS) allows you to find the other two angle measures and the last side length. D (ASA) lets you find the other angle and the other side lengths. The rest of the answers either don't account for both angles and sides, or don't give sufficient information.

7 0

4 years ago