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pashok25 [27]
3 years ago
12

Please help me simplify this! I have no idea how to solve this question! Thank you if you do!

Mathematics
1 answer:
rjkz [21]3 years ago
6 0
You go it right it's the first one
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Help me with this one please
Drupady [299]

Step-by-step explanation:

1cm = 16 km

Distance between York and London = 23.1 cm

<em>Now the real distance between </em><em>York </em><em>and </em><em>London </em><em>=</em><em> </em><em>2</em><em>3</em><em>.</em><em>1</em><em> </em><em>*</em><em> </em><em>1</em><em>6</em>

<em>=</em><em> </em><em>3</em><em>6</em><em>9</em><em>.</em><em>6</em><em> </em><em>km </em>

6 0
3 years ago
Brainliest to right answer
Lera25 [3.4K]

Answer:

Here

Step-by-step explanation:

12/4 + 2* 1/2 -3

Multiply first 2 * 1/2 = 2/2=1

12 divided by 4 is 3

the overall equation would be

3+1-3

3+1=4

4-3=1

The Answer is 1

8 0
3 years ago
David invested $220 in a savings account that offers a 3% return on the investment. The value of
STatiana [176]

Answer:

20 years

Step-by-step explanation:

Using the formula; A = P(1 + r)^t

We can plug in the known to find t

400 = 220(1.03)^t

then solve for t;

1.818 = 1.03^t

Introducing In

In 1.818 = t × In (1.03)

t = 20.225  

t = 20 years to the nearest year

7 0
3 years ago
Writing Exercises
yawa3891 [41]

Answer:

A quadratic equation can be solved using the quadratic formula, the factoring method, or completing the square. You expect to get either one or two answers.

Step-by-step explanation:

First, we have to understand how to solve a quadratic equation. There are three methods, the first of which is the quadratic formula. For any quadratic equation that takes the standard form of

f(x)=ax^2+bx+c

you can solve for x by using the following formula:

x=(-b±√(b^2-4ac))/2a

Sometimes, however, the quadratic expression is factorable, meaning it can be converted into a product of two smaller expressions. For example:

x^2-4=(x-2)(x+2)

As you can see, factoring gives you the roots easily (set each smaller expression to 0 and solve for x). If the quadratic is factorable, it would be easiest to use this method first.

Completing the square is another method that can be used to solve a quadratic function. It is often preferred because it converts the function into something factorable. In order to complete the square, you have to first ensure that the quadratic term's coefficient is 1. After that, you can take the linear term's coefficient, divide it by 2, and square it. Take the new term you found and add it to the equation. Because you are adding something to an equation, you must also subtract. Now, you can complete the square and factor. An example can be found below:

x^{2}-6=0\\\\(x^2-6+9)-9=0\\\\(x-3)^2-9=0\\\\(x-3-3)(x-3+3)=0\\\\x(x-6)=0\\\\x=0, x=6

A quadratic equation can only have up to two solutions. You can imagine the graph of a quadratic. It looks like a parabola and only changes directions once. This means that it only crosses the x-axis two times. You can also look at the examples given and see that factoring only gives you two smaller expressions (leading to 2 roots). Sometimes, however, you might get a double root, leading to an equation with only one solution. This happens when the discriminant of the quadratic equation is 0. You can calculate this in advance to save yourself some time.

4 0
2 years ago
Recently, a certain bank offered a 10-year CD that earns 11.86% compounded continuously.
a_sh-v [17]

Answer:

Step-by-step explanation:

Given the following :

Compounding interest on CD (r) = 11.86%

Period (t) = 10 years

A) If $10,000 is invested in the CD ; worth in 10 years will be ;

A = P(1 + r)^t

Here, P = $10,000

A = final amount or worth

A = 10,000(1 + 0.1186)^10

A = 10,000(1.1186)^10

A = 10,000 × 3.067242759

A = $30672.43

B. How long will it take for the account to be worth $35,000?

A = $35,000 final worth

35000 = 10,000(1 + 0.1186)^t

35000 = 10000(1.1186)^t

Divide both sides by 10000

1.1186^t = 3.5

t = 3.5 / In(1.1186)

t = 3.5 / 0.1120779

t = 31.228

t = 31. 23years

4 0
3 years ago
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