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2 years ago

What is the formula for equations.

1 answer:

8 0

A formula is a fact or rule that uses mathematical symbols. It will usually have: an equals sign (=) two or more variables (x, y, etc) that stand in for values we don't know yet.

Example: The formula for finding the volume of a box is:

x = 2y - 7 Formula (relating x and y)

a2 + b2 = c2 Formula (relating a, b and c)

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You open a savings account and deposit $1,000. After 1 year of earning continuously compounded interest.

Alenkinab [10]

Answer:

Step-by-step explanation:

$1036.66=1000e^{2r}\\ \\ r=(ln(1.03666))/2\\ \\ r=0.018\\ \\ b(x)=1000e^{(0.018x)}\\ \\ b(10)=1000e^{0.18}=\$ 1197.22$

3 0

3 years ago

Jalen inherited a collection of vintage comic books. An appraiser separated the comic

sladkih [1.3K]

Jalen has total 63 comic books.

Step-by-step explanation:

Given,

Total value of comic books = $3135

Let,

Number of $45 comic books = x

Number of $65 comic books = y

According to given statement;

45x+65y=3135 Eqn 1

x=y+33 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

$45(y+33)+65y=3135\\45y+1485+65y=3135\\110y=3135-1485\\110y=1650\\$

Dividing both sides by 110

$\frac{110y}{110}=\frac{1650}{110}\\y=15$

Putting y=15 in Eqn 2

$x=15+33\\x=48$

Total comic books = x+y

Total comic books = 48+15 = 63

Jalen has total 63 comic books.

Keywords: addition, elimination method

Learn more about elimination method at:

#LearnwithBrainly

7 0

3 years ago

The sum of two numbers is 98. Their difference is 22. Write a system of equations that describes this situation. Solve by elimin

erik [133]

Answer:

x + y = 98

x - y = 22

2x = 120

x = 60

x + 60 = 98

x = 38

the answer is b

6 0

3 years ago

Which of the following graphs represents the solution set for 7(4x – 1 ) + 6x > –279? PLEASE HELP

Luda [366]

First, solve the inequality:
$7(4x - 1 ) + 6x \ \textgreater \ -279\\
28x-7+6x\ \textgreater \ -279\\
34x\ \textgreater \ -272\\
x\ \textgreater \ -8$
Since x is greater than -8, you have the arrow point up the graph towards the positive side starting at -8.
Since it's greater than but not equal to -8, the circle is open.

Thus your graph is D.

3 0

3 years ago

Which savings account can a financial institution end?

nataly862011 [7]

The correct answer is 'callable certificate of deposit’. Financial institutions can recall these before they reach maturity. This avoids financial institutions having to pay more if interest rates go down.

7 0

3 years ago

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What is the formula for equations. ​

What is the formula for equations.