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2 years ago

Select all the ways to describe the number −15/2.

Mathematics

1 answer:

lidiya [134]2 years ago

6 0

Answer:

mixed number: -7 1/2

decimal: -7.5

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Rewrite each linear equation in standard form. Then, state the values for A, B, and C.

cestrela7 [59]

Answer:

A = 9/100

B = -[1/100]

C = -[39/100]

Step-by-step explanation:

Given:

0.09x - 0.01y = 0.39

Find:

A,B,C

Computation:

Linear equation;

Ax + By + C = 0

So,

0.09x - 0.01y = 0.39

9x/100 - 1y/100 = 39/100

9x/100 - 1y/100 - 39/100= 0

So,

A = 9/100

B = -[1/100]

C = -[39/100]

5 0

3 years ago

Given that 32✓2=2^a , find the value of a

NNADVOKAT [17]

Answer:

Step-by-step explanation:

All you need is something that when you divide the right side (the way I've written it) by 2, you get 32 sqrt(2). So a must also have sqrt(2) in it. In addition, it must also have 16 as well so that when you multiply by 2, you get 32.

2a = 32*sqrt(2) Divide by 2

a = 16*sqrt(2)

5 0

3 years ago

Read 2 more answers

suppose the z-score of your grade in this statistics course turns out to be .97. interpret this z-score.

Anon25 [30]

A z score of 0.97 corresponds with a probability of 83.40%

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation$

From the normal distribution table:

P(z < 0.97) = 0.8340 = 83.40%

A z score of 0.97 corresponds with a probability of 83.40%

Find out more on z score at: brainly.com/question/25638875

5 0

2 years ago

It costs $329 to rent a car for a week. If the cost per

Dmitry_Shevchenko [17]

Answer:

339

Step-by-step explanation:

Add 329 by 10 then you will get this answer

3 0

3 years ago

A jar containing only nickels (n) and dimes (d) contains a total of 60 coins. The value of all the coins in the jar is $4.45.

cestrela7 [59]

Answer:

n + d = 60

0.05n + 0.1d = 4.45

The jar contains: 31 nickels and 29 dimes.

Step-by-step explanation:

Numbers of coins: n nickels and d dimes

Total number of coins: n + d

Total number of coins: 60

Equation 1: n + d = 60

Values of the coins:

n nickels are worth 0.05n

d dimes are worth 0.1d

Total value of all coins: 0.05n + 0.1d

Total value of coins: $4.45

Equation 2: 0.05n + 0.1d = 4.45

System of equations:

n + d = 60

0.05n + 0.1d = 4.45

Solve the first equation for n.

n = 60 - d

Substitute 60 - d for n in the second equation.

0.05n + 0.1d = 4.45

0.05(60 - d) + 0.1d = 4.45

3 - 0.05d + 0.1d = 4.45

3 + 0.05d = 4.45

0.05d = 1.45

d = 29

There are 29 dimes.

n + d = 60

n + 29 = 60

n = 31

There are 31 nickels.

The jar contains:

31 nickels and

29 dimes.

7 0

3 years ago