All categories

2 years ago

Jillian and Sara are sisters. Jillian is older than Sara by 3 years.

Mathematics

2 answers:

user100 [1]2 years ago

8 0

Answer:

Let's represent Jillian's age with j and Sara's with s.

j must be 3 more than s, so j = s+3
then s= j-3

marta [7]2 years ago

5 0

Answer:

I think it's 3. s+3

Step-by-step explanation:

This question is weird! :\

You might be interested in

What is the formula for the following arithmetic sequence? -9 , -2 , 5 , 12

nirvana33 [79]

First term: -9
Common difference: 7

a(n) = -9 + 7(n-1), for n = {1, 2, 3, ... }

Check: what is the first term? let n=1. Then a(1) = -9 + 7(1-1) = -9.
This is correct.

7 0

3 years ago

Read 2 more answers

Use substitution to solve the following system of equations. What is the value of y? {3x+2y=12{5x−y=7 A) y = -3B) y = 3C) y = -2

Vlad [161]

Answer

B) y = 3

Step-by-step explanation

Given the system of equations:

$\begin{gathered} 3x+2y=12\text{ \lparen eq. 1\rparen} \\ 5x-y=7\text{ \lparen eq. 2\rparen} \end{gathered}$

Isolating x from equation 1:

$\begin{gathered} 3x+2y-2y=12-2y \\ 3x=12-2y \\ \frac{3x}{3}=\frac{12-2y}{3} \\ x=\frac{12}{3}-\frac{2}{3}y \\ x=4-\frac{2}{3}y\text{ \lparen eq. 3\rparen} \end{gathered}$

Substituting equation 3 into equation 2 and solving for y:

$\begin{gathered} 5(4-\frac{2}{3}y)-y=7 \\ 5\cdot4-5\cdot\frac{2}{3}y-y=7 \\ 20-\frac{10}{3}y-y=7 \\ 20-\frac{13}{3}y=7 \\ 20-\frac{13}{3}y-20=7-20 \\ -\frac{13}{3}y=-13 \\ (-\frac{3}{13})\cdot-\frac{13}{3}y=(-\frac{3}{13})\cdot-13 \\ y=3 \end{gathered}$

6 0

1 year ago

Sam collected six leaves to feed to his caterpillar collection if he wanted to split the leaves among seven cages how much shoul

Kazeer [188]

6÷7 is 0.857. maybe?

3 0

3 years ago

PLS HELP! Which transformation could take figure P to figure Q?

solmaris [256]

Answer:

3. A single translation

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Jacob's little brother thinks that he could design a better lion enclosure than the one he sees at the zoo. He makes a drawing o

abruzzese [7]

Answer:

Step-by-step explanation:

Length

1 inch = 25 feet

7 1/4 inches = x feet

1 * x = 25 * 7 1/4

x = 25 * 7.25

Length = 181.25 feet

The length is 181.25

hypotenuse length

The diagonal = 10 1/2 inches

The diagonal = 10.5 inches

hypotenuse = 10.5 * 25 = 262.5 feet

Width

L^2 + W^2 = Diagonal^2

181.25² + W² = 262.5²

32851.5625 + W² = 68906.25 Subtract 32851.5625 from both sides

W² = 68906.25 - 32851.5625

W^2 = 36054.6875 Take the square root of both sides

W = 189.88

Area

Area = L * W

Area = 181.25 * 189.88

Area = 34415.88 square feet.

3 0

3 years ago