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mario62 [17]
4 years ago
12

X² + 2x − 8 = 0 (x + _ ) (x - _ ) x = x =

Mathematics
1 answer:
jeka944 years ago
8 0
Factors of -8 that add up to 2: 4 & -2

(x + 4)(x - 2)

Set x to 0 for both and solve

x = -4

x = 2
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Please help me im about to fail!!!! Express your answer in scientific notation.
Illusion [34]

Answer:

3.74 x 10^5

Step-by-step explanation:

First expand the term in scientific notation into normal notation.

3.3 x 10^5   -   Here the ^5 tells us to move the decimal five places to the right, so we go from

3.30000 to

330000.00

So 3.3 x 10^5 = 330,000

Now add that to 44,000 and you get 374,000.

Return this number to scientific notation.  Move the decimal back to its spot before the 3.  We go from

374,000.00 to

3.74000

Once again the decimal has moved five places, so that is the number in the exponent of the our scientific notation, and therefore our answer is

3.74 x 10^5

3 0
3 years ago
Y = 5x - 22 y = 4x - 17
Pie
The answer is (5,3). You need to equal both sides out. So 5x-22=4x-17. That will give you x=5. After that you substitute 5 for x in one or both of the equations and get that y=3. Hope this helps!
6 0
3 years ago
Read 2 more answers
Many professional schools require applicants to take a standardized test.
Mars2501 [29]

Answer:

if pete placed in the 73rd percentile, this means that his score was better than 73% of the other test takers, so the fourth option: he scored more than about 73% of the test takers

Step-by-step explanation:

hope this helps :)

5 0
3 years ago
Evaluate
lakkis [162]

A piece-wise function combines more than one functions of different input values.

<em>The value of f(-1) is -3</em>

From the graph, we have the following observations

  • <em>When x = -1, y = -3</em>
  • <em>When x = -1, y = -4</em>

Notice that there is a closed circle at the point where x = -1 and y = -3.

This means that y = -3 is inclusive of the values of y on that particular function

However, there is an open circle at the point where x = -1 and y = -3.

This means that y = -4 is exclusive of the values of y on that particular function

The correct corresponding value of y is when y is inclusive.

Hence, the value of f(-1) is -3

See attachment for the graph of the piece-wise functions

Read more about piece-wise functions at:

brainly.com/question/11547854

6 0
3 years ago
Which reason completes the proof below?
sergeinik [125]

Observe the figure given.

Given: ABCD is a parallelogram.

To prove: ABCD is a rhombus

Statement

1. ABCD is a parallelogram. AC bisects \angle BCD, \angle BAD.

Reason: Given

2. \angle 1 \cong \angle 2, \angle 3 \cong \angle 4

Reason: Definition of an angle bisector

3. AC \cong AC

Reason: Reflexive property of congruence

4. \Delta ABC \cong \Delta ADC

Reason: ASA Postulate

5. AB \cong AD, BC \cong DC

Reason: corresponding parts of congruent triangles are equal.

6. AB \cong CD, BC \cong AD

Reason: Opposite sides of the parallelogram are congruent.

7. AB \cong AD \cong BC \cong CD

Reason: Transitive property of congruence

8. ABCD is a rhombus

Reason: Definition of rhombus

4 0
3 years ago
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