All categories

3 years ago

Help me please, please make the answer simple and easy

Mathematics

1 answer:

blondinia [14]3 years ago

3 0

Answer:

5(3x - 9)

3(5x - 45)

Step-by-step explanation:

If you simplify the expression "Andre" wrote, you would get 15x - 45 and just need two other expressions that equal 15x - 45. In this problem it's simple since only 3 and 5 can multiply to make 15 besides 1 and 15, which is used in the expression "Andre" wrote, meaning it couldn't be used.

You might be interested in

The surface area of one cube is twice the surface area of a second cube.

Liono4ka [1.6K]

Answer:

8:1

Step-by-step explanation:

Volume of a cube = Length of edge³

So the equation for the small cube is,

V=L³

If the edge of the bigger cube is twice as long as the smaller cubes edge, then the equation for the bigger cube is:

V = (2L)³

= (2³)L³

= (8)L³

Combining these two in ratio form:

(8)L³ : (1)L³

You can remove the L³ from each side because they are equal

So the answer is 8:1

5 0

3 years ago

Read 2 more answers

The letter "t" makes up an estimated 10% of a certain language. Assume this is still correct. A random sample of 500 letters i

Andrew [12]

Answer:

0.2755

Step-by-step explanation:

We intend to make use of the normal approximation to the binomial distribution.

First we'll check to see if that approximation is applicable.

For p=10% and sample size n = 500, we have ...

pn = 0.10(500) = 50

This value is greater than 5, so the approximation is valid.

The mean of the distribution we'll use as a model is ...

µ = p·n = 0.10(500)

µ = 50

The standard deviation for our model is ...

σ = √((1-p)µ) = √(0.9·50) = √45

σ ≈ 6.708204

A continuity correction can be applied to better approximate the binomial distribution. We want p(t ≤ 9.1%) = p(t ≤ 45.5). For our lookup, we will add 0.5 to this limit, and find p(t ≤ 46).

The attached calculator shows the probability of fewer than 45.5 t's in the sample is about 0.2755.

6 0

4 years ago

In a local kickball league, the ratio of college graduates with a graduate degree to non-college graduates is 1:8, and the ratio

qaws [65]

Answer:

3 / 19

Step-by-step explanation:

Given the following :

ratio of college graduates with a graduate degree to non-college graduates = 1:8

ratio of college graduates without a graduate degree to non-college graduates is 2:3

If college graduate with a degree = A

College graduate without a degree = B

Non-college graduate = C

College graduate to non college graduate = A:C

College graduate without degree to non college graduate = B:C

A:C = 1:8 - - - (1) ; B:C = 2:3 - - - (2)

Combining the two ratios :

To do so : the proportion of non college graduate should be the same in both ratios

To do this, multiply (1) by 3 and (2) by 8

A:C = 3 : 24

B:C = 16 : 24

combining both, we have :

A:B:C = 3:16:24

If one random college graduate is picked, what is the probability that they hold a graduate degree?

Total proportion of college graduate : (college graduates with degree + college graduates without degree)

A + B = (3 + 16) = 19

Proportion who hold a graduate degree = A = 3

Probability = require outcome / Total possible outcomes

Thus :

P = A / (A +B)

= 3/19

8 0

4 years ago

Help me pls 30 points

tensa zangetsu [6.8K]

Answer:

The toy replica is smaller than the model in the lobby

Step-by-step explanation:

Model in the lobby: 1:103

Toy Replica: 1:200

1:200 < 1:103

1:200 = 1/200

1:300 = 1/300

4 0

3 years ago

Need help with school please

kicyunya [14]

The answer to the question is 585

3 0

3 years ago