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3 years ago

(-8x + 1) – (8x – 1) = ??

Mathematics

1 answer:

Bad White [126]3 years ago

6 0

Answer:0

Step-by-step explanation:

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Topic is Sets, please help

vredina [299]

I couldn’t see the whole picture so I’m not sure if I could really help I’m sorry maybe next time

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2 years ago

Read 2 more answers

15.5 × [(2 × 2.4) + 3.2] – 16

ch4aika [34]

Answer:

108

Step-by-step explanation:

5 0

3 years ago

HEEEEEELP !

iogann1982 [59]

If you meant to write y=23x-4 then none of the lines are perpendicular.

I suspect you intended y=2/3x-4, then line D, y=-3/2x-4 is perpendicular.

For any line y=mx+b, you have to "invert" m to get a perpendicular line. Inverting in this case means: flip numerator and denominator and add a minus sign.

So 2/3 becomes -3/2, hence answer D.

The 'inverted' m is called the opposite reciprocal. That's your word of the day.

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3 years ago

There are 84 boys in a senior class of 146 students. find the ratio of boys to girls. (note: if you know the total number of stu

vladimir1956 [14]

84 to 62. You have to subtract 146-84 to get the number of girls from the class.

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3 years ago

Please Identify the congruent triangles in the figure.

Tpy6a [65]

The missing steps are each right angles and $\angle R \cong \angle O$ .

Solution:

Step 1: Given data:

$\overline {P Q} \cong \overline{M N}$

$\overline{Q R} \cong \overline{N O}$

$\overline{P R} \cong \overline{M O}$

Step 2: In the two polygons,

$\angle Q =90^\circ$ and $\angle N =90^\circ$

$\angle Q \cong \angle N$ (Each right angle)

Step 3: Given

$\angle P \cong \angle M$

Step 4: By third angle theorem,

If two angles in one triangle are congruent to the two angles in the other triangle, then the third angles in the triangles also congruent.

$\angle R \cong \angle O$

Step 5: By the definition of congruent polygons,

If two same shape polygons have all the angles are congruent and all the corresponding sides are congruent then the polygons are congruent.

Hence $\Delta P Q R \cong \Delta M N O$ .

Therefore the missing steps are each right angles and $\angle R \cong \angle O$ .

5 0

3 years ago