All categories

3 years ago

solve the following quadratic equation by completing the square. if you need to round to the nearest tenth. x² - 20x = -75

Mathematics

1 answer:

lesantik [10]3 years ago

5 0

The Answer should be either x=15 or x=5 I got both.

You might be interested in

Equations: 1)18-7x=4 2)13=19+2x 3) 4t+7=62-t 4) 5(2t-10)=60-12t 5) 4t=48-2(7-t)

jarptica [38.1K]

Answer:

in the pic

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)

8 0

3 years ago

Questions 1-6 , need help ASAP , will award you brainiest

nika2105 [10]

Answer:

1. 13+10i

2. 28-(-4i)

3. -14-1i

4. 4 -i

5. 15+ 10i

6.8 - 5i^2

Step-by-step explanation:

8 0

3 years ago

How do I do this. I don’t understand how to move place values

Drupady [299]

For this case we must indicate the value of the following expression, expressed in scientific notation:

$(1.2 * 10^{-3}) * (1.1 * 10^{8}) =$

We have that for multiplication properties of powers of the same base, the same base is placed and the exponents are added:

$a ^ n * a ^ m = a ^ {n + m}$

Then, rewriting the expression we have:

$(1.2 * 1.1) * 10 ^{- 3 + 8} =\\1.32 * 10 ^ 5$

Answer:

$1.32 * 10 ^ 5$

5 0

3 years ago

What percent is equivalent to 9/4 ? A) .225% B) 22.2% C) 44.4% D) 225%

ki77a [65]

Your answer would be D. 225%. 9/4 equals to 2.25 which multiplied but a 100 to make the percentage equals 225%.

8 0

3 years ago

Why is 1/2 of 2 equals one whole

algol [13]

Hey There :)

This is because one is half of two. You could also multiply 2 * 0.5= 1, 0.5 represents $\frac{1}{2}$ and two is the whole number. This is how $\frac{1}{2}$ of two equals one.

Have A Brainly Day :)

8 0

3 years ago

Read 2 more answers