2 years ago

X squared minus 2X -19 equals 3X +5

Mathematics

1 answer:

Anuta_ua [19.1K]2 years ago

3 0

Answer:X= 8, -3

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

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A statement and portions of the flowchart proof are shown. Which reason should appear in box labeled 1?

larisa [96]

Answer:

Angle Addition Postulate

Step-by-step explanation:

Given:

$m\angle UVW=30^{\circ}\\ \\m\angle WVX=75^{\circ}$

Prove:

$m\angle UVX=105^{\circ}$

Proof:

1. $m\angle UVX=m\angle UVW+m\angle WVX$ - Angle Addition Postulate

2. $m\angle UVW=30^{\circ}$ - given

3. $m\angle WVX=75^{\circ}$ - given

4. $m\angle UVX=30^{\circ}+75^{\circ}$ - Substitution Property of Equality

5. $m\angle UVX=105^{\circ}$ - Simplify

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3 years ago

Prove the multiple of two consecutive integers is positive

Usimov [2.4K]

Answer:

2×3=6

or 6×5=30

Step-by-step explanation:

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2 years ago

Is ratio 4.2:1.5 proportional to 12.6:4.5

Gennadij [26K]

If we divide 12.6/4.5 by 3 we receive 4.2/1.5. So yes they are proportional. <span />

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3 years ago

Which of the following circles have their centers in the second quadrant? Check all that apply.

erastova [34]

Answer:

B and C

Explanation:

Coordinates of A: (5,-5), which is in the 4th quadrant.

Coordinates of B: (-12,9), which is in the 2nd quadrant.

Coordinates of C: (-3,2), which is in the 2nd quadrant.

Coordinates of D: (2,-7), which is in the 4th quadrant.

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3 years ago

A school has 18 classes with 35 students in each class. In order to reduce class size to 30,how many new classes have to be form

Mekhanik [1.2K]

1 class with 5 student

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3 years ago

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