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klemol [59]
3 years ago
5

Homework help!!!!!!!!

Mathematics
2 answers:
Feliz [49]3 years ago
4 0

Answer:

u=-1

Step-by-step explanation:

if you replace with a or b the answer on the left side is actually bigger since it is closer to 0 than -20. same with choice d

choice c makes -12-28 which is a smaller value than -20

kaheart [24]3 years ago
4 0
the answer is u= -1

-
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B. Subtract polynomials: (3x – 5 – 7x2) – (–2 + 6x2 – 5x)
Lapatulllka [165]

Answer:

(3x-5-7x^{2} )-(-2+6x^{2} -5x)

step\:1: 3x-5-7x^{2} +2-6x^{2} +5x

step\:2:(-7x^{2} -6x^{2} )+(3x+5x)+[(-5+2)]

step\:3:-13x^{2} +8x-3

<u>OAmalOHopeO</u>

7 0
3 years ago
Triangle L M Q is cut by perpendicular bisector L N. Angle N L Q is 32 degrees and angle L M N is 58 degrees.
Serga [27]

Answer:

Yes

Step-by-step explanation:

ΔMNL ≅ ΔQNL  by ASA or AAS

by ASA

Proof:

∠ LNM = ∠LNQ    =90

LN = LN   {Common}

∠MLN = ∠QLN     {LN bisects ∠ L}

By AAS

∠Q + ∠QLN + ∠LNQ = 180  {Angle sum property of triangle}

∠Q + 32 + 90 = 180

∠Q  + 122 = 180

∠Q = 180 -122 =

∠Q = 58

∠Q = ∠M

∠MNL =∠QNL = 90

LN = LN {common side}

8 0
3 years ago
How to I write 1 2/3 as an improper fraction help ASAP
vagabundo [1.1K]
You would write 5/3 for it to be an improper fraction
8 0
3 years ago
Read 2 more answers
Evaluate x2 + 3x ; x = -3
stepladder [879]
The answer would be -15
5 0
3 years ago
a pile of sand has a weight of 90kg The sand is put into a small bag, a medium bag and a large bag in the ratio of 2 : 3 : 7 Wor
just olya [345]
Hi there!

To split 90 kilos in the ratio of 2 : 3 : 7 we must first realise that we have a total of 2 + 3 + 7 = 12 parts, in which we must split the total 90 kilos.

12 parts equal 90 kilo, and therefore
1 part equals 90 / 12 = 7.5 kilos.

1 part equals 90 / 12 = 7.5 kilos, and therefore
2 parts equal 7.5 × 2 = 15 kilos.

1 part equals 90 / 12 = 7.5 kilos, and therefore
3 parts equal 7.5 × 3 = 22.5 kilos.

1 part equals 90 / 12 = 7.5 kilos, and therefore
7 parts equal 7.5 × 7 = 52.5 kilos.

Hence, 90 kilos in the ratio of 2 : 3 : 7
gives 15 kg, 22.5 kg and 52.5 kg.

~ Hope this helps you!
3 0
3 years ago
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