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3 years ago

To increase an amount by 3.2% what single multiplier would you use

Mathematics

1 answer:

kvv77 [185]3 years ago

3 0

You would the amount times by

1.302

Hope this helps!

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Jessica's shoebox is 20 centimeters long and 10 centimeters wide. How many more millimeters is the length of the shoebox than th

Solnce55 [7]

The length is 20-10=10 cm longer than the width. That is: 10 cm * 10 mm/cm = 100 mm

7 0

3 years ago

Write down the quadratic equation whose roots are $x = -7$ and $x = 1,$ and the coefficient of $x^2$ is 1. Enter your answer in

pav-90 [236]

<h2>Steps:</h2>

So firstly, since we know that the coefficient of x² is 1, this means that this is our base equation:

y = x² + bx + c

Now, since we know that the roots are -7 and 1, set y = 0 and set x = -7 and 1 and simplify:

$0=(-7)^2+b(-7)+c\\0=49-7b+c\\-49=-7b+c\\\\0=1^2+b(1)+c\\0=1+b+c\\-1=b+c\\\\-49=-7b+c\\-1=b+c$

Now with this, we can set up a system of equations to solve for b and c. For this, I will be using the elimination method. For this, subtract the 2 equations:

$\begin{alignedat}{2}-49&=-7b+c\\-(-1&=b+c)\\-48&=-8b\end{alignedat}$

Now that the c variable has been eliminated we can solve for b. For this, divide both sides by -8 and your first part of your answer is b = 6.

Now that we know the value of b, plug it into either equation to solve for c:

$-49=-7(6)+c\\-49=-42+c\\-7=c\\\\-1=6+c\\-7=c$

<h2>Answer:</h2>

<u>Putting it together, your final answer is x² + 6x - 7 = 0.</u>

4 0

3 years ago

4d^3-10 as <br> verbal expression

Rina8888 [55]

Four times d to the third minus ten

3 0

3 years ago

What is the radius of this circle if the circumference is 187 cm?

BARSIC [14]

Answer:

its 9 but i could be wrong

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3 years ago

There were 3 bands that

ipn [44]

Answer:

18.75%

Step-by-step explanation:

(round answer if needed)

8 0

3 years ago

Read 2 more answers