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3 years ago

The owner of a small store buys coats for $55.00 each.

Mathematics

1 answer:

ch4aika [34]3 years ago

7 0

Answer:

5/9%

Step-by-step explanation:

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Bill and Amy want to ride their bikes from their neighbourhood to school which is 14.4 kilometers away. It takes Amy 40 minutes

olga55 [171]

You can use the equation d=rt
Amy 14.4=40r r=0.36 kilometers/minute
Bill 14.4=20r r= 0.72 kilometers/minute
Amy (0.36 kilometers/minute)(60 seconds/1000 meters)= 0.0216 meters/second
Bill (0.72 kilometers/minute)(60 seconds/1000 meters)=0.0432 meters/second

0.0432-0.0216=0.0216 meters/second faster than Amy

3 0

3 years ago

If a number added to five is divided by the difference of the number and two, the result is three-fourths. Find the number.

alexandr1967 [171]

Answer:

x = - 26

Step-by-step explanation:

Let the number be x.

According to the question,

$\frac{x+5}{x-2} = \frac{3}{4}\\$

Cross multiplying 4 & 3 gives :-

$4(x+5)=3(x-2)$

And solving this eqn. gives :-

$4(x+5)=3(x-2)\\=> 4x+20=3x-6\\=>4x-3x=-20-6\\=>x=-26$

Verification :-

(putting the value of x = -26 )

$\frac{x+5}{x-2} \\\\=>\frac{-26+5}{-26-2} \\\\=> \frac{-21}{-28} \\\\=>\frac{21}{28}$

Reducing $\frac{21}{28}$ by 7 gives $\frac{3}{4}$ .

5 0

4 years ago

Let f(x)= 3x2 +5 and g(x) = - 5x + 3. Find the following.<br> (f-g)(-4)<br> (f-9)(-4)=

masha68 [24]

Answer: 3x^2 - 3

Step by step explanation:

5 0

3 years ago

Explain which variables would be included when using technology to calculate the present value of a lump sum and to calculate th

koban [17]

Answer:

a. Present value of a lump sum =

PV = FV / ( 1 + i )ⁿ

b. Present value of an annuity =

P = PMT x ((1 – (1 / (1 + r)⁻ⁿ )) / r)

Step-by-step explanation:

a. Present Value of a Lump sum =

PV = FV / ( 1 + i )ⁿ

Where variables in the formula are explained as follows

PV = Present Value of the given amount today

FV = Future Value of the given amount

i = Discount rate

n = Number of periods

b. Present value of an annuity is given as:

P = PMT x ((1 – (1 / (1 + r)⁻ⁿ)) / r)

The variables in the equation are explained as the follows:

P = the present value of annuity

PMT = Payment per period or the amount in each annuity payment

r = the interest or discount rate

n = total number of periods or the number of payments left to receive

8 0

3 years ago

HURRY PLEASE! 20 pts

ss7ja [257]

Answer:

1,207.6 m

Step-by-step explanation:

Combine the two semicircles on both sides.

Circumference is pi times diameter.

Circumference is 3.14 times 35 which is 109.9

Add 96 two times to that to get 301.9, one lap around the track.

Multiply by 4, 4 laps, to get 1207.6

You're welcome

5 0

3 years ago

The owner of a small store buys coats for ​$55.00 each.

The owner of a small store buys coats for $55.00 each.