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Artyom0805 [142]
4 years ago
10

What is the answer to (5x+1)(x+2)=-1

Mathematics
1 answer:
tiny-mole [99]4 years ago
5 0
Expand it so the expression would equal
5x^2+11x+2=-1
move the negative one over by adding one to both sides
5x^2+11x+3=0
then do the quadratic formula
x=-b+/- (√(b^2-4ac))/2a
where b = 11 a=5 and c=3

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Which number line represents the solutions to |x – 5| = 1? A number line from negative 7 to 7 in increments of 1. Two points, on
pochemuha

Answer:

Two points, one at 4 and one at 6.

Step-by-step explanation:

<u>Equations with absolute value </u>

The absolute value of a number x denoted as |x| is a number with the same magnitude with a positive sign. When we know the result of an absolute value, we cannot know if the original number is positive or negative.  

If |x| = a, a>=0, then x=a or x=-a

The equation to solve is |x – 5| = 1. If we apply the above criteria, then

x-5=1 or x-5=-1

Which gives us two possible solutions for x

x=6

x=4

The correct answer is  

Two points, one at 4 and one at 6.

8 0
3 years ago
Read 2 more answers
Help please! any1 know this​
worty [1.4K]

The only option that fits is E, because:

f(10)=4×10+10=50

8 0
3 years ago
What is the equation of the line in point slope form with
Feliz [49]

Answer:

y = 3/4x + 17/4

Step-by-step explanation:

y-intercept= 8 - (3/4)(5) = 8 - 15/4 (8*4-15)/4

= 17/4

7 0
3 years ago
A) X - 12x + 32<br>b) x = 14x + 48<br>c) x - 3x + 2​
alex41 [277]

Answer:

a is -11x+3x

b is -48/13

c is -2(x-1)

Step-by-step explanation:

hope this helps!

4 0
4 years ago
If there is 16 boys in the classroom are 40% of the class, how many students are there in the class
mrs_skeptik [129]

Answer:

40 students

Step-by-step explanation:

16 = 40%

Divide by two to get 20% = 8

Then multiply by 5 to get 40 = 100%

There’s other ways to do this, BUT this is the way that I solve it.

8 0
3 years ago
Read 2 more answers
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