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musickatia [10]
3 years ago
5

Expression "-3x^2+y4x" when x = "-4" and y = 2 A. -112 B. -80 C. 80 D. 272

Mathematics
1 answer:
Paraphin [41]3 years ago
6 0
B, -3(-4)^2+(2)4(-4) plug into a calculator
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Janet saved $400 dollars. She decided to spend 130 on clothes. What percentage of her money did she spend on clothes?
adell [148]

Answer:

32.5

Step-by-step explanation:

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What is x equal to ? Link down below.
scZoUnD [109]

Answer:

50

Step-by-step explanation:

Because of supplementary angles that line has to equal to 180

180-75 = 105

so 105 = (2x + 5)

you can subtract 5 from each side and get

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then divide each side by 2 and you get

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you can check it by doing (2 x 50 + 5)

2 x 50 = 100 + 5 = 105 + 75 = 180

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Which is a perfect square? <br>A 20 <br>B 21 <br>C 24<br>D 25​
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find the area of each sector. Use the 3.14 as the value of pi. Round your answer to the nearest tenth.​ Part 4
Yuri [45]

Answer:

1) 378.1 in²

2) 8.4 m²

Step-by-step explanation:

Area of sector= \frac{θ°}{360°}  \times \pi {r}^{2}

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=  \frac{150°}{360°} \times 3.14 \times  {17}^{2}  \\  = 378.1 \: in^{2}  \\ (nearest \: tenth)

2) Area of sector

\frac{60°}{360°}  \times 3.14 \times  {4}^{2}  \\  = 8.4 \: m^{2}  \\ (nearest \: tenth)

7 0
3 years ago
Three cards are drawn at random from a standard deck of cards, without replacement. Find the probability that the suits of the c
Evgesh-ka [11]

The probability that suits of cards are spades, hearts, and spades is 39/850 or 0.046.

According to the give question.

Three cards are drawn from a standard deck of cards without replacement.

Since,

The total number of cards in a standard deck = 52

Total number of spade cards = 13

Total number of heart cards = 13

Now,

The probabbility of getting first card as a spade card = 13/52 = 1/4

The probability of getting second card as heart card

= 13/(52 -1)     (cards are drawn without replacement)

= 13/51

The probability of getting third card as a spade card

= (13 - 1)/52 -2

= 12/50

= 6/25

Therefore, the probability that suits of the cards are spades, hearts, spades

= 1/4 × 13/51 × 6/25

= 39/850

= 0.046

Hence, the probability that suits of cards are spades, hearts, and spades is 39/850 or 0.046.

Find out more information about probability here:

brainly.com/question/11234923

#SPJ4

8 0
1 year ago
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