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2 years ago

Factor completely 7x²-9x-10

Mathematics

2 answers:

prohojiy [21]2 years ago

7 0

(X - 2)(7x + 5) this should be your answer

Shtirlitz [24]2 years ago

5 0

Answer:

First, assign a value to x. x will be 2 in this case.

Next, multiply x by itself, because that is what exponent 2, or squared, means. 2 x 2 = 4

Now, multiply 4 by 7. 4 x 7 = 28

Next, find the value of 9x.

The value of 9x will be 9 times a number, x, also known as 2 in this scenario. 9 x 2 = 18

Then, subtract 28 from 18. 28 - 18 = 10

Lastly, subtract 10. 10 - 10 = 0

Therefore,

The answer is 0. Product may vary depending on value assigned to x.

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Find the balance on a deposit of $455 that earns 4% interest compounded annually for 2 years. $36.40 $491.40 $492.13 $819

STatiana [176]

$A=P(1+ \frac{r}{n})^{tn}$
A=future amount
P=present amount
r=rate in decimal
n=number of times per year compounded
t=time in years

given
P=455
r=4%=0.04
n=1
t=2

$A=455(1+ \frac{0.04}{1})^{(2)(1)}$
$A=455(1+ 0.04)^{2}$
$A=455(1.04)^{2}$
A=492.128
round
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3 years ago

Read 2 more answers

Find the discriminant and the numbers of real roots for this equation: 4x^2+12x+9=0

Len [333]

Answer:

$D=0$

The quadratic equation has one real root with a multiplicity of 2.

Step-by-step explanation:

Given a quadratic equation:

$ax^2+bx+c=0$

You can find the Discriminant with this formula:

$D=b^2-4ac$

In this case you have the following quadratic equation:

$4x^2+12x+9=0$

Where:

$a=4\\b=12\\c=9$

Therefore, when you substitute these values into the formula, you get that the discriminant is this:

$D=(12)^2-4(4)(9)\\\\D=0$

Since $D=0$ , the quadratic equation has one real root with a multiplicity of 2 .

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3 years ago

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3 years ago

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Zolol [24]

Answer:

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$373.78 / 22 = $16.99

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8 0

3 years ago

Factor completely 7x²-9x-10​

Factor completely 7x²-9x-10