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3 years ago

Please help me figure this out and pls explain to me how to do this I’m so confused

Mathematics

1 answer:

trapecia [35]3 years ago

7 0

Im doin the same stuff and can’t figure it out

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alright so I got the answer from here but I still can't figure out how we got 12p? can somebody explain step by step pls

Andreas93 [3]

There's no 12p in the simplification

$(2p+3)^{2} =(2p)^{2} +3^{2} = 4p^{2} +9$

3 0

3 years ago

If 40 people shake hands with each person in the class, how many handshakes

AfilCa [17]

780 handshakes.
(n(n-1))/2
(40(40-1))/2
(40*39)/2
1560/2
780

3 0

3 years ago

Area

pentagon [3]

Step-by-step explanation:

1. In PQN & SRT.

a. <RST=<QPN (corresponding angle PQllSR)

b. <STR = <PNQ (corresponding angle TRIINQ)

c. TR=QN (Since TN & QN are opp. Side of parallelogram QNTR)

d. .°.PQN~=SRT.

2.PQN=PSOQ+SNO (whole part axiom)

3.SRT = SNO + NTRO(same as above)

4. PQN=SRT (From st. 1d)

or, PS0Q+SNO =SNO + NTRO (Cancellation of SNO)

or, PS0Q=NTRO

or, PSOQ +QOR=NTRO +QOR (Adding QOR on both side)

or, .°.◼️PQRS = ◼️QRTN

Best of luck!!!!.

8 0

4 years ago

A bag contains eight blue marbles six red marbles and four green marbles what is the probability of selecting a red marble repla

Paha777 [63]

Answer: $\frac{2}{27}$

<u>Step-by-step explanation:</u>

blue = 8 , red = 6 , green = 4 , total = 18

red and green

$\frac{6}{18}$ x $\frac{4}{18}$

= $\frac{1}{3}$ x $\frac{2}{9}$

= $\frac{2}{27}$

7 0

3 years ago

An angle measures 30° less than the measure of its supplementary angle. What is the measure of each angle?

xxMikexx [17]

Answer:

The measures of each would be:

105° and 75°

Step-by-step explanation:

Supplementary angles are two angles whose measures sum up to 180° or they form a straight line.

So if an angle measures 30° less than the measure of its supplementary, it wold mean that both angles together is equal to 180°.

∠1 = x

∠2 = x-30°

∠1 + ∠2 = 180°

So here we plug in our equations:

∠1 + ∠2 = 180°

x + x - 30° = 180°

2x - 30° = 180°

We solve for the x then:

Add 30° on both sides of the equation:

2x - 30° + 30° = 180° + 30°

2x = 210°

Divide both sides by 2:

2x/2 = 210°/2

x = 105°

∠1 = 105°

Now we solve for the second angle:

∠1 + ∠2 = 180°

105° + ∠2 = 180°

Subtract 105° from both sides of the equation:

105° + ∠2 - 105° = 180° - 105°

∠2 = 75°

7 0

4 years ago