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3 years ago

Write the number equal to 2 tens 15 ones.

Mathematics

2 answers:

sattari [20]3 years ago

4 0

2 tens 15 ones is equal to 35

katovenus [111]3 years ago

4 0

So first count to 10 (I hope this doesn't sound rude). If your done counting to 10 count ten more again (10 + 10 = 20). So now you have 20. There are 15 ones. Here's our number problem, 20 + 15. To do this any easier way add 5 to 20. Which is 25, then add 10 more which is 35. Or add 5 to 20 then add another 5 then another 5. But the answer is 35 :). If you try your hardest and try to make it in a way you can understand it, you will get good at it ( I hope that doesn't sound rude ^-^)!

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If sin A= 0.8, find the positive value of cos A

Ahat [919]

Answer:

cosA = 0.6

Step-by-step explanation:

Using the Pythagorean identity

sin²A + cos²A = 1 ( subtract sin²A from both sides )

cos²A = 1 - sin²A ( take the square root of both sides )

cosA = ± $\sqrt{1-sin^2A$

Since only the positive value is required , then

cosA = $\sqrt{1-(0.8)^2}$

= $\sqrt{1-0.64}$

= $\sqrt{0.36}$

= 0.6

6 0

3 years ago

Read 2 more answers

If 3 bars of chocolate cost $15.00 ghana cedis how much will 7 bars cost ratio

Rudiy27

Answer:

7 chocolate bars will cost $35

Step-by-step explanation:

if 3 cost $15 then 1 bar would cost 5 dollars and 5x7=35

here is a ratio:

15 = 35

6 0

3 years ago

A ladder is leaning up against a 70 foot wall at an angle of elevation of 38° how far is the foot of the latter from the wall? R

SIZIF [17.4K]

Tanα=h/x

x=h/tanα

x=70/tan38 ft

x≈89.6 ft (to nearest tenth of a foot)

Note: the question seems strange, (because this would make the ladder almost 114 feet long!) or are we to assume as I did that the ladder is leaning against a point 70 feet high, or should if be a 70 foot ladder leaning against a wall of unknown height?

If it is just a 70 ft ladder at a 38° inclination the:

cosα=x/L

x=Lcosα

x=70cos38° ft

x≈55.2 ft

4 0

3 years ago

AMDM TVM

Liono4ka [1.6K]

Answer: Vanessa is a financial planner specializing in retirement savings. She realizes the importance

of using mathematical formulas and the appropriate tools to help her clients understand the

reasoning behind the advice she is giving.

One of her favorite tools is a time-value-of-money (TVM) calculator. In Student Activity

Sheet 4, you met Josephine, one of Vanessa’s clients who wanted to retire with $1 million

in savings.

1. In Josephine’s initial situation, she plans to retire in 50 years with $1 million in savings.

Vanessa advised her to find an account that earned at least the current rate of inflation.

Use this information to complete the table below.

Variable Definition of Variable Value in Josephine’s

Situation

FV future value, or value of the investment at maturity

t number of years of investment until maturity

i annual interest rate (as a decimal)

PV principal, or present value

n number of compounding periods per year

Vanessa uses a TVM calculator to help Josephine understand how the different variables

affect one another.

2. Identify the values in Josephine’s situation for each variable that the TVM calculator

uses.

Variable Definition of Variable Value in Josephine’s

Situation

N number of compounding periods between the

time of investment and the time of retirement

I% annual interest rate (as a percent)

PV principal, or present value

PMT amount of each regular payment

FV future value, or value of the investment at

maturity

P/Y

number of payments per year (usually the same

as the number of compounding periods per year,

C/Y)

C/Y number of compounding periods per year

Student: Class: Date:

Decision Making in Finance: Present Value of an Investment

VI.B Student Activity Sheet 5: A Cool Tool!

Charles A. Dana Center at The University of Texas at Austin Advanced Mathematical Decision Making (2010)

Activity Sheet 5, 6 pages

3. Use the TVM calculator to determine the present value (PV) of the investment required

to meet Josephine’s retirement goal. How does this amount compare to what you

determined in Student Activity Sheet 4?

Use the TVM calculator to answer the following questions for some of Vanessa’s other

clients.

4. Reginald wants to find the future value of an investment of $6,000 that earns 6.25%

compounded quarterly for 35 years.

Variable Definition of Variable Value in Reginald’s

Situation

N number of compounding periods between the time

of investment and the time of retirement

I% annual interest rate (as a percent)

PV principal, or present value

PMT amount of each regular payment

FV future value, or value of tStep-by-step explanation:

3 0

3 years ago

Identify the vertex y=2x^2-4x-2

icang [17]

Answer:

The vertex is (1, -4)

Hope this helps!

8 0

3 years ago