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sergey [27]
3 years ago
8

Jellybeans cost $0.80 per pound.Howard buys 4.5 pounds of jellybeans for himself and 1 pound for his friend.What is the total co

st of the jellybeans Howard buys?
Mathematics
2 answers:
Nady [450]3 years ago
7 0

$4.40 is the total amount of money spent on the jellybeans.

Paha777 [63]3 years ago
4 0

\text{We're trying to find the total costs of the amount of jelly beans Howard}\\\text{bought}\\\\\text{We know that the jellybeans cost 0.80 cents per pound}\\\\\text{We also know that he buys 4.5 pounds for himself, and 1 pound for his}\\\text{friend, totaling 5.5 pounds of jellybeans bought}\\\\\text{To find the total cost, multiply 5.5 by 0.80}\\\\5.5\cdot0.80=4.4\\\\\boxed{\$4.40}

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Find the solution of this system of equations 10x-7y=-1 and -2x-7y=-25
Sergio039 [100]

Answer:

<h2>x = 2, y = 3 → (2, 3)</h2>

Step-by-step explanation:

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3 years ago
If elephant grass grows 2 1/4 inches a day, how many inches will it grow in 9 days?
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Answer:

20.25 inches

Step-by-step explanation:

2.25x9=20.25

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Your math teacher asked you to solve the equation in the box.
lawyer [7]

Answer:

x = x - 4/6

false

Step-by-step explanation:

6(x - 1) - 4x = 2(3x - 5)

First, lets distribute the 6 to each item inside the parentheses on the left side. You can do this by multiplying the 6 by each term.

6 * x = 6x

6 * -1 = -6

6x - 6 - 4x = 2(3x - 5)

Next, we will combine like terms.

6x - 4x = 2x

2x - 6 = 2(3x - 5)

Now, let's look at the right side of the equation.

Let's distribute the 2 to each item inside the parentheses on the left side. You can do this by multiplying the 2 by each term.

2 * 3x = 6x

2 * -5 = -10

6x - 1 = 6x - 5

Immediately, we can tell this is false, but let's solve the equation just to make sure.

6x - 1 = 6x - 5

+1              +1

6x = 6x - 4

---     --------

6        6

x = x - 4/6

This is false.

6 0
2 years ago
Which of the following equations is equivalent to 3(2p + 4) – (3p – 4) = 43?
kupik [55]
I just solved it for you and the answer i got was D
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2 years ago
State whether each sequence is arithmetic and justify your answer. If the sequence is arithmetic, write a recursive and an expli
nasty-shy [4]

Answer:

Part A

f(n)=52-12(n-1)

f(n)=\left\{\begin{matrix}52\: \:if \: \:n=1 & \\f(n+1)+12& if\: n\geq 2 \end{matrix}\right.

Part B

(2,4,8,16,32)\: \: Geometric Sequence

Part C

1/4,3/4,5/4,7/4,9/4

g(n)=\frac{1}{4}+\frac{2}{4}(n-1)\\f(n)=\left\{\begin{matrix}1/4if \: \:n=1 & \\ f(n+1)+2/4& if\: n\geq 2 \end{matrix}\right

Part D:

h(n)=1.1+0.4(n-1)\\h(n)=\left\{\begin{matrix}1.1 & if\:n=1 \\ h(n+1)+0.4 & if\:n\geq 2\end{matrix}\right

Step-by-step explanation:

By definition, an Arithmetic Sequence holds the same difference between each following number.

Part A

(52,40, 28, 16)\\52-40=12\\40-28=12\\28-16=12\\d=12

<u>Explicit Formula</u>

To write an explicit formula is to write it as function.

f(n)=52-12(n-1)

<u>Recursive Formula</u>

To write it as recursive formula, is to write it as recurrence given to some restrictions:

f(n)=\left\{\begin{matrix}52\: \:if \: \:n=1 & \\f(n+1)+12& if\: n\geq 2 \end{matrix}\right.

Part B

(2,4,8,16,32)\: \:

Geometric Sequence, since 2*2=4 8*2=16 and 16*2=32 and 8+2=10 8+16=24

Part C

(\frac{1}{4},\frac{3}{4},\frac{5}{4},\frac{7}{4},\frac{9}{4})\\\

Arithmetic Sequence, difference

d=\frac{2}{4}

<u>Explicit Formula:</u>

g(n)=\frac{1}{4}+\frac{2}{4}(n-1)

<u>Recursive Formula</u>

g(n)=\left\{\begin{matrix}\frac{1}{4} &if\:n=1 \\ g(n+1)+\frac{2}{4} &if\: n\geq 2\end{matrix}\right.

Part D

(1.1,1.5,1.9,2.3,2.7) Arithmetic Sequence, difference d=0.4

<u>Explicit formula</u>

h(n)=1.1+0.4(n-1)\\

<u>Recursive Formula</u>

h(n)=\left\{\begin{matrix}1.1 &if\:n=1 \\ h(n+1)+0.4 &if\: n\geq 2\end{matrix}\right.

6 0
3 years ago
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