3 years ago

The sum of two numbers is 21 the second number is 6 times the first number of

Mathematics

2 answers:

romanna [79]3 years ago

8 0

the numbers are 3 and 18

let the first number be n then the second number = 6n and the sum

sum = n + 6n = 21 thus

7n = 21

divide both sides of the equation by 7

n = $\frac{21}{7}$ = 3

the numbers are 3 and 6 × 3 = 18 → (3 + 18 = 21)

Ronch [10]3 years ago

8 0

A + B = 21
6 x A = B

A + 6xA = 21
7xA=21
21/7= 3

A=3
B=18

You might be interested in

Why is x=5 not in the domain of the function

Anestetic [448]

BC it's a rate of change

5 0

3 years ago

Answer?...................

Viefleur [7K]

Step-by-step explanation:

please mark me as brainlest

6 0

2 years ago

Read 2 more answers

Mrs. Rodriguez wants to pay her restaurant bill which is $24.00. A 6% tax is added by the waitress. If Mrs. Rodriguez wants to l

Gelneren [198K]

She would have to pay $30.53
24x.6=1.44
24+1.44=25.44
25.44/.2=5.088
25.44+5.09 (you had to round it up because it's money)
Which equals 30.53
I hoped this helped :)

6 0

3 years ago

Read 2 more answers

Determine if the following is parallel perpendicular or neither. y=2/3x-5 and 2x-3y=12

Nezavi [6.7K]

It is neither did we e

6 0

3 years ago

Citrus farmer who grows mandarin oranges finds that the diameters of mandarin oranges harvested on his farm follow a normal dist

SSSSS [86.1K]

Answer:

6.0520

Step-by-step explanation:

Given that:

Mean = 5.85

Standard deviation = 0.24

Let N denote the 80th percentile.

P(X < N) = 0.8

$P(Z < \dfrac{(N - 5.85)}{0.24}) = 0.8$

Using the Excel formula: = NORM.INV(0.8,5.85,0.24)

The 80th percentile for the diameters of mandarin oranges:

= 6.0520 (to 4 decimal place)

8 0

3 years ago