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2 years ago

8

State the number of real solutions for x^2 + 12 = -6x

1 answer:

Papessa [141]2 years ago

7 0

No real solution
you must take the square root of a -3 which gives you an imaginary number

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allsm [11]

Answer:

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Step-by-step explanation:

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2 years ago

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Find the area of this figure

barxatty [35]

Answer:

165

Step-by-step explanation:

Put the extra half rectangle in the empty space. It will end up being a perfect rectangle, then you did the area like you usually do..:

22 x 7.5.

=165

Good luck, hope i helped

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2 years ago

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Write a function that represents the situation. Let t represent the time in years. You deposit $800 in an account that earns 7%

Anna35 [415]

Answer:

pretty sure it's 56 I could be wrong though

3 0

2 years ago

Boris choos three diffrent numbers.the sum of the three numbers is 36.One of trh numbers is a cube number.the other two number a

inna [77]

Answer:

4,5,27

Problem:

Boris chose three different numbers.

The sum of the three numbers is 36.

One of the numbers is a perfect cube.

The other two numbers are factors of 20.

Step-by-step explanation:

Let's pretend those numbers are:

$a,b, \text{ and } c$ .

We are given the sum is 36: $a+b+c=36$ .

One of our numbers is a perfect cube. $a=n^3$ where $n$ is an integer.

The other two numbers are factors of 20. $bk=20$ and $ci=20$ where $a,c,i, \text{ and } k \text{ are integers}$ .

$n^3+\frac{20}{k}+\frac{20}{i}=36$

From here I would just try to find numbers that satisfy the conditions using trial and error.

$3^3+\frac{20}{2}+\frac{20}{2}$

$27+10+10$

$47$

$3^3+\frac{20}{4}+\frac{20}{5}$

$27+5+4$

$36$

So I have found a triple that works:

$27,5,4$

The numbers in ascending order is:

$4,5,27$

4 0

3 years ago

When Marla rounded 19.95 to the nearest tenth, she found the number changed to 20.is this correct

dexar [7]

Yes, Marla is correct.

4 0

3 years ago