All categories

3 years ago

2f-8= -16 f=?? PLEASE BE QUICK THANK YOU!!

Mathematics

1 answer:

Maksim231197 [3]3 years ago

6 0

Answer:

f = -4

Step-by-step explanation:

2f-8= -16

2f = -16+8

2f = -8

f = -8/2

f = -4

You might be interested in

Where were MOST of France's colonies located in Africa?

PtichkaEL [24]

A in the west africa

8 0

3 years ago

A study shows that 20% of college students pray daily in their own religious beliefs. In a group of 300 college students, find t

svetlana [45]

Answer:

0.2805

Step-by-step explanation:

Given that p = 20% = 0.2, n = 300.

The mean (μ) = np = 0.2 * 300 = 60

The standard deviation (σ) = $\sqrt{np(1-p)}=\sqrt{300*0.2(1-0.2)}=6.93$

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:

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

For x = 57:

$z=\frac{57-60}{6.93 } =-0.43$

For x = 62:

$z=\frac{62-60}{6.93 } =0.29$

From the normal distribution table, P(57 < x < 62) = P(-0.43 < z < 0.29) = P(z < 0.29) - P(z < -0.43) = 0.6141 - 0.3336 = 0.2805

5 0

3 years ago

Simple, plz help! Need Plato answer

Nataly_w [17]

Factors of 121 are; 1,11, and 121. so it would be D.

7 0

3 years ago

Read 2 more answers

In which group of numbers is each number a multiple of 4?

AVprozaik [17]

The answer is the first row 12, 24, 48, 96

8 0

3 years ago

The product of two consecutive numbers exceeds the square

Lyrx [107]

Answer:

20,21

Step-by-step explanation:

Let x be the first number.

Let y be the 2nd number.

Given y - x = 1 (since they are consecutive)

Rearrange it: y = x+1 (equation 1)

Also given:

$xy-20=x^{2}$ (equation 2)

Now we can substitute y = x + 1 into equation 2.

$x(x+1)-20 = x^{2} \\x^{2} +x-20 = x^{2} \\x-20=x^{2} -x^{2} \\x-20=0\\x=20$

Since we know x, the smaller number is 20, we can substitute to equation 1 to find y, the larger number.

y = 20+1

= 21.

Therefore the 2 numbers are 20 and 21.

8 0

2 years ago