Ask question

Ask question

All categories

3 years ago

12

Jasiah wants to buy a bicycle that costs $330. He has saved $50 so far and will save $40 each week until he has enough money to

buy the bicycle

2 answers:

tia_tia [17]3 years ago

6 0

The answer is $280

Working:

Studentka2010 [4]3 years ago

6 0

Answer:

$280

Step-by-step explanation:

There are 2 ways to do the question.

Method 1: $330-$50=$280

Method 2: 7 days equals to one week=$40.

$40×7=$280

Hope these helps you!

You might be interested in

Given: A, B, and C What is the value of X in the matrix equation AX + B = C?

Ksju [112]

Answer:

Option (2)

Step-by-step explanation:

Given expression is, AX + B = C

$A=\begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}$

$B=\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix}$

$C=\begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}$

AX + B = C

AX = C - B

C - B = $\begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}-\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix}$ = $\begin{bmatrix}-42+7 & -20+9\\ 5-4 & 4+1\end{bmatrix}$

C - B = $\begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}$

Let $X=\begin{bmatrix}a & b\\ c & d\end{bmatrix}$

AX = $\begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}\times \begin{bmatrix}a & b\\ c & d\end{bmatrix}$

= $\begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}$

Since AX = C - B

$\begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}=\begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}$

Therefore, a = 1, b = 5

(-3a - 4c) = -35

3(1) + 4c = 35

3 + 4c = 35

4c = 32

c = 8

And (-3b - 4d) = -11

3(5) + 4d = 11

4d = -4

d = -1

Therefore, Option (2). X = $\begin{bmatrix}1 & 5\\ 8 & -1\end{bmatrix}$ will be the answer.

7 0

3 years ago

What is the answer plz help me

melamori03 [73]

The answer is B The overall price change for the week
i hope it help

3 0

3 years ago

A store has 4 employees that earn 178 dollars altogether if they all earn the same amount how much does each employee earn

EastWind [94]

Answer:

44.50

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Mary spent half of her allowance going to the movies. She washed the family car and earned 6 dollars. What is her weekly allowan

chubhunter [2.5K]

X is her allowance

X/2 + 6 = 15

X/2=11
X=22

5 0

3 years ago

Need an answer asap!

Alex

Answer:

c

Step-by-step explanation:

you would put -142 in the x place

-0.2(-142+223)

-0.2(81)=-16.2

3 0

3 years ago