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kompoz [17]
3 years ago
5

What's is x - 4 = - 7

Mathematics
1 answer:
shtirl [24]3 years ago
7 0
X would be equal to -3
in other words x=-3
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klasskru [66]
\bf |x^2+3x-1|\ \textless \ 3\implies &#10;\begin{cases}&#10;+(x^2+3x-1)\ \textless \ 3\\\\&#10;-(x^2+3x-1)\ \textless \ 3&#10;\end{cases}\\\\&#10;-------------------------------\\\\&#10;x^2+3x-1\ \textless \ 3\implies x^2+3x-4\ \textless \ 0\implies (x+4)(x-1)\ \textless \ 0&#10;\\\\\\&#10;x\ \textless \ &#10;\begin{cases}&#10;-4\\&#10;1&#10;\end{cases}\\\\&#10;-------------------------------\\\\&#10;-(x^2+3x-1)\ \textless \ 3\implies x^2+3x-1\boxed{\ \textgreater \ }-3&#10;\\\\\\&#10;x^2+3+2\ \textgreater \ 0\implies (x+2)(x+1)\ \textgreater \ 0\implies x\ \textgreater \ &#10;\begin{cases}&#10;-2\\&#10;-1&#10;\end{cases}
8 0
3 years ago
A jar contains 17 orange,7 pink, and 4 black marbles. A marble is drawn at random.What is the probability that the marble is pin
Grace [21]
Sample space = 17 + 7 + 4 = 28
P(pink) = 7/28
P(orange) = 17/28
P(pink or orange) = P(pink) + P(orange)
P(pink or orange) = 7/28 + 17/28
P(pink or orange) = 24/28
P(pink or orange) = 6/7 or 0.857143 or 85.7%
5 0
3 years ago
Write the set of real numbers from - 10 through 10 in interval notation.
Klio2033 [76]

Answer:

1) (-10,10) - Greater than -10 and less than 10.

2) [-10, 10] - Greater than or equal to -10 and less than or equal to 10.

3) [-10, 10) - Greater than or equal to -10 and less than 10.

4) (-10, 10] Greater than -10 and less than or equal to 10.

Step-by-step explanation:

There are four form of describing that set in interval notation, which presented below:

1) (-10,10) - Greater than -10 and less than 10.

2) [-10, 10] - Greater than or equal to -10 and less than or equal to 10.

3) [-10, 10) - Greater than or equal to -10 and less than 10.

4) (-10, 10] Greater than -10 and less than or equal to 10.

8 0
3 years ago
AABC~ ADEF. What is the scale factor?<br><br> Help please
vladimir1956 [14]

Answer:

3:1 or 3

Step-by-step explanation:

the left triangle is scaling up to the right triangle. 5/15 is 1/3

7/21 is 1/3

4/14 is 1/3

since it is scaling UP, the scale factor is 3:1

7 0
3 years ago
Please help I am confused will give brainly. Not sure how to find the measurements of 2, 3 and 4
antiseptic1488 [7]

Answer:

2: 99° 3: 81° 4: 81°

Step-by-step explanation:

2 is supplementary to 1 so subtract 81 from 180 = 99.

3 is vertical angle with 1 so they are equal

4 is alternate interior angle with 3 so they are equal

hope this helps stay safe :)

4 0
3 years ago
Read 2 more answers
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