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3 years ago

Which fraction is equivalent to 4 over negative 15

Mathematics

1 answer:

Artist 52 [7]3 years ago

7 0

Answer:

- 4/15

Step-by-step explanation:

Just take 4 and 15 make that a fraction make the fraction a negative not the 15 because they will be the same thing no matter where you place it

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while mining Peter found a large metal bar that contains 22 grams of zinc Peter also determined that the bar was 55% zinc what w

Yakvenalex [24]

The answer is 31.9g
The other metal weighs 9.9 grams

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3 years ago

A certain intelligence test has an N(100, 100) distribution. To see whether intelligence is inherited, tests are given to the el

Anettt [7]

Answer:

Follows are the solution to the given choices:

Step-by-step explanation:

In choice a:

$\to \mu = 100$

In choice b:

$\to \mu \neq 100$

In choice c:

$\to \ pop \ average=100 \\\\ \to \ variance \ of \ pop = 100 \\\\\to pop \ \ \sigma = \sqrt {(!00)} \\$

= 10

$z= \frac{\bar x - \mu}{ \frac{\sigma}{\sqrt(n)}}\\\\$

$=\frac{(105-100)}{\frac{10}{ \sqrt(16)}}\\\\=\frac{(5)}{ \frac{10}{4}}\\\\=\frac{5}{ \frac{5}{2}}\\\\= \frac{10}{5}\\\\=2$

$\to p==2\times (1- \ righttail)\\\\\to \ righttail\ \ p = \text{NORM.S.DIST(2,TRUE)}$

$=0.977249868$

$\therefore \\P=2 \times (1-0.9772)\\\\P=0.0455\\\\P$

Null hypothesis to dismiss

Alternate solution assumptions embrace

There is really no valid proof at the 5% stage that

Knowledge is legacy

In choice d:

Possibly information such as this reflect a sample population with such a true p = 0.0455 meaning in the hypothesis

u is around 100.

11 +001

7 0

3 years ago

PLEASE SOLVE FOR B. PLEASE HELP VERY URGENT!

aleksklad [387]

Answer:

b1 = (2A/ h) - b2

Step-by-step explanation:

A = 1/2 h(b1 + b2)

b1 + b2 = A / 1/2h = 2A/h

b1 = (2A/ h) - b2

4 0

3 years ago

A bag contains 2 red, 5 blue, and 3 green marbles. A marble is chosen at random. What is the probability of NOT choosing a red m

Lapatulllka [165]

Step-by-step explanation:

Number of red = 2
Number of blue = 5
Number of green = 3

total number of marbles = 10

<h3>probability of not choosing a red marble = 1--choosing a red marble.</h3>

Because probability is always one(1).

Probability =

 $1 - \frac{2}{10}$ 

 $\frac{8}{10}$ 

 $\frac{4}{5}$ 

Is the probability of not choosing a red marble.

4 0

2 years ago

Jim is putting money into a savings account. He starts with $350 in the savings account, and each week he adds $60.

lukranit [14]

Answer:

S= 350+60w

Step-by-step explanation:

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3 years ago