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lubasha [3.4K]
3 years ago
10

Help pleasesolve for x​

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
3 0

Answer: x= 47 (If that says 3x+2)(the picture is a little blurry)

Step-by-step explanation:

Linear pairs of angles sum to 180.

37+(3x+2) =180

Combine like terms

39+ 3x = 180

Subtract 39 from both sides

3x = 141

Divide both sides by 3

x= 47

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Pls anwers pls friend fast pls
Natalija [7]

Answer:

(b) (a) (d) (a) (c)

Step-by-step explanation:

(i) The probability of an even card is 1/2 because the number of even cards and odd cards are the same so there is a 50% of getting an even card. (b)

(ii) Since the card is replaced, there is still a card for all numbers between 1-20. There are 8 prime numbers and 20 cards so the probability of getting a prime number is 8/20 or 4/10 or 2/5. (a)

(iii) The card was not replaced so there are only 19 cards and there are only 5 numbers that are multiples of 3 and greater than 4. The probability must be 5/19. (d)

(iv) A sure event means that it will happen 100%. So P(A) = 1 since the number one represents 100%. (a)

(v) All cards have replaced and there is only one number that is a multiple of 3 and 5 which is 15. 1 card out of 20 is a desired outcome so 1/20 is the probability. (c)

7 0
3 years ago
The mean of the data set is 40 and one standard deviation is 5. About what percent of the numbers fall between 35 and 50?
Nataly [62]

Answer:

The correct option is D. 81.8%

Step-by-step explanation:

Mean of the data set is given to be 40

⇒ μ = 40

Standard deviation of the data set is given to be 5

⇒ σ = 5

Now we are supposed to find out what percent of the numbers fall between 35 and 50

\implies z =\frac{x-\mu}{\sigma}

Now for P(35 < x < 50) :

Substitute x = 35 ⇒ z = -1

Substitute x = 50 ⇒ z = 2

So, P(-1 < z < 2) = P(z < 2) - P(z < -1)

⇒ P(-1 < z < 2) = 0.9772 - 0.1587

⇒ P(-1 < z < 2) = 0.8185

⇒ P(-1 < z < 2) = 81.8%

Therefore, 81.8% percent of the numbers fall between 35 and 50

Hence, The correct option is D. 81.8%

8 0
4 years ago
❤❤❤PLEASE HELP ASAP I DON'T UNDERSTAND I WILL MARK BRILLIANT WHOEVER ANSWER!!!!❤❤❤
lys-0071 [83]
1. 137.5%
2. 66.7%
3.48%
4.51.87
7 0
4 years ago
What is the slope and y-intercept of 3x - 4y = 20?
Ivan

Answer:

Slope: 3/4x, Y-int: -5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
When three or more points lie on the same straight line.
Minchanka [31]

Answer:

Three or more points are said to be collinear if they all lie on the same straight line.

Step-by-step explanation:

Pls mark as brainliest

8 0
3 years ago
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