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olchik [2.2K]
3 years ago
12

(2x^2 - 5x + 3) - (-x2 + 4x - 5) A) x2 - x - 2 B) 3x2 - 9x - 2 C) 3x2 - x + 15 D) 3x2 - 9x + 8

Mathematics
2 answers:
Lelu [443]3 years ago
6 0

Answer:

3x^2 -9x +8


Step-by-step explanation:

Hopefully this attachment will help you!!!

<u>Good luck!!</u>

finlep [7]3 years ago
3 0

Answer:  D) 3x2 - 9x + 8

Step-by-step explanation: usatestprep approved

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ziro4ka [17]

Answer: B

Step-by-step explanation:

4 0
3 years ago
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Please find the answer and show your work so I can learn thanks!!
irga5000 [103]

Answer:

22.34 {km}^{2}

Step-by-step explanation:

The area of a circle:

A = πr^{2}

The problem gives the diameter of a circle, which is equal to 2*r.

If 5 1/3 = 2*r, then the radius is (16/3)/2 = 8/3.

Plugging this into the area equation,

A = π*{{8/3}}^{2}

A = \frac{{64*π}}{9} or approximately 22.34 {km}^{2}

8 0
3 years ago
The weather forecast says that the probability of being cloudy tomorrow is 30% and the probability of raining is 25%. If it is c
Bumek [7]
<h3>Answer:</h3>

\large\boxed{C).\,13.5\%}

<h3>Step-by-step explanation:</h3>

In this question, we're trying to find the probability of it being cloudy and raining.

In this case, we know that:

  • Probability of it being cloudy is 30%
  • Probability of it raining is 25% (this is necessarily not needed)
  • If it's cloud, the probability of it raining is 45%

With the information above, we can find the probability.

We know that from a 100% scale, the chance of it being cloudy is 30%.

We know that if it's cloudy, the chances of raining is 45%

To find the probability of it being cloudy and raining, we would multiply 0.3 (30%) by 0.45 (45%)

Solve:

0.3*0.45=0.135\\\\\text{Move the decimal place two times to the right}\\\text{to turn it into a percent}\\\\\boxed{13.5\%}

Your answer would be C). 13.5%

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
6 0
3 years ago
Please help me asap!
Artemon [7]

Answer:   1. ∠A= 80.75°  2. 41.79 cm^2

Step-by-step explanation:

Since, According to the sines low,

\frac{sin A}{CB} = \frac{sin C}{AB}

Here, CB= 4.1 cm,  AB = 3.3 and ∠ C = 52.6°

\frac{sin A}{4.1} = \frac{sin 52.6}{3.3}

⇒ sin A = 4.1\times\frac{sin 52.6}{3.3}

⇒  sin A =0.98699998308

⇒ A = 80.75°

2. Since, the area of the given figure = Area of the rectangle having dimension 8.3 × 4.2 + Area of the half square of radius 2.1

=34.86 + 6.93

= 41.79 square cm

4 0
3 years ago
Thirty children from an after-school club went to the matinee. This is 20% of the children in the club. How many children are in
Setler [38]

Answer:

<h2>C)150 </h2>

Step-by-step explanation:

20%=30

x by 5 to get 100%

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3 years ago
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