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3 years ago

Solve the equation y/-4 + 5 = 15

Mathematics

2 answers:

emmainna [20.7K]3 years ago

7 0

Answer:

y=-40

Step-by-step explanation:

subtract 5 from both sides

cancel out 5

y/-4=10

times -4 on both sides

y=-40

Allushta [10]3 years ago

5 0

Answer:

y= -40

Step-by-step explanation:

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Evaluate 2xy when x = -<br> and y = 3.<br> The value of the expression is<br> ]

Volgvan

2(-1/4)(3)

2 * -1/4 = -0.5

-0.5 * 3 = -1.5

-1.5 or -1 1/2

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3 years ago

For some postive value of Z, the probability that a standardized normal variable is between 0 and Z is 0.3770. The value of Z is

Talja [164]

Answer:

1.16

Step-by-step explanation:

Given that;

For some positive value of Z, the probability that a standardized normal variable is between 0 and Z is 0.3770.

This implies that:

P(0<Z<z) = 0.3770

P(Z < z)-P(Z < 0) = 0.3770

P(Z < z) = 0.3770 + P(Z < 0)

From the standard normal tables , P(Z < 0) =0.5

P(Z < z) = 0.3770 + 0.5

P(Z < z) = 0.877

SO to determine the value of z for which it is equal to 0.877, we look at the

table of standard normal distribution and locate the probability value of 0.8770. we advance to the left until the first column is reached, we see that the value was 1.1. similarly, we did the same in the upward direction until the top row is reached, the value was 0.06. The intersection of the row and column values gives the area to the two tail of z. (i.e 1.1 + 0.06 =1.16)

therefore, P(Z ≤ 1.16 ) = 0.877

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3 years ago

What are the solutions to the following equation?

gregori [183]

Answer: -8.5

Step-by-step explanation:

I got it right on edg

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3 years ago

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15. Jiovanni is looking in to two different companies that offer study guides for math exams.Test Prep 101 charges a $5 flat fee

timama [110]

.25p + 5 = .50p + 2

-.25p = -3

-p = -12

p= 12 problems

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3 years ago

What is the prime factor of 8

ExtremeBDS [4]

Prime factor is a factor that is a prime number.
Prime factors of :
8 : 2 × 2 × 2. Also can be written as
${2}^{3}$
12 : 2 × 2 × 3. Also can be written as
${2}^{2} \times 3$

20 : 2 × 2 × 5. Also can be written as
${2}^{2} \times 5$

30 : 2 × 3 × 5

56 : 2 × 2 × 2 ×7. Also can be written as
${2}^{3} \times 7$

70 : 2 × 5 × 7

You can find all of them by using Factor Tree [ as shown in the picture] or Dividing by prime numbers.

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3 years ago