Solve the following equation for x. x2 + 8x + 7 = 0 A. x = -1; x = -7 B. x = 1; x = -7 C. x = 1; x = 7 D. x = -1; x = 7

Mathematics

2 answers:

BabaBlast [244]3 years ago

5 0

So the right answer is of option A.

Look at the attached picture

Hope it will be helpful to you..

Komok [63]3 years ago

3 0

Answer:

A. x = -1; x = -7

Step-by-step explanation:

Did tha test, is right.

You might be interested in

Four bottles of Powerade cost $3.88.What is the unit price of each bottle

Mazyrski [523]

The unit price is $0.97

5 0

3 years ago

PLEASE PLEASE PLEASE HELP ME FIND THE BASE AREA

elena-s [515]

Answer:

$v olume= \frac{1}{3} \times \: height \times surface \\ 1594.5 = \frac{1}{3} \times {x}^{2} \times 15.8 \\ {x}^{2} = (1594.5 \times 3) \div 15.8 = 302.753 \\ x = 17.399$

8 0

3 years ago

Cumulative Exam

soldier1979 [14.2K]

Answer:

I would need a lot of context to answer this question

Step-by-step explanation:

if your able to give said context I will Edit answer

4 0

4 years ago

In angle def , DF=22 and m angle f=45. Find the length of a leg. Leave your answer in simplest radical form

Levart [38]

The figure is the right triangle DEF.

In it, E is the 90° angle, D is the corner over E (this is, DE is the vertical segment or height from the base) and F is the corner to the right of E (f, is the angle and EF is the horizontal segment or base of the triangle).

Then EF is the adjacent leg to the angle f, DE is the opposite leg to the angle f, and DF is the hypotenuse of the triangle.

Given that the angle f is 45°, you know that the triangle is isosceles (45-45-90) and then the two legs have the same length and you can use Pytagorean theorem:

DF^2 = x^2 + x^2 = 2x^2 => x^2 = (DF)^2 / 2

Taking square roots from both sides:

=> x = DF / √2 = 22 / √2 = [22√2] / [(√2)(√2)] = [22√2] / 2 = 11√2

Remember, both legs have the same length.

Answer: 11√2

6 0

3 years ago

Dennis thought of a number. He adds 0.5 to that number and then multiplies the new result by 4. He then subtracts 2 and divides

Talja [164]

Let the x be the number
So,
(4(x+0.5)-2)/2=48
So,
x=24 is the number.

8 0

4 years ago

Read 2 more answers