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4 years ago

Which expression has the same value as -18=(-9)?

Mathematics

2 answers:

Fed [463]4 years ago

6 0

Answer:

either A or B

Step-by-step explanation:

hope this helped

jasenka [17]4 years ago

5 0

I believe the answer is B

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Jack had a coin and a number cube. The number cube is labeled one through six. He flips the coin ones and rolls the number cube

RUDIKE [14]

Answer:

1/4 or 25%

Step-by-step explanation:

The chance of it landing on tails is 1/2.

The chance of the cube landing on an even number is 3/6, or 1/2.

Multiply 1/2 by 1/2 to get 1/4.

4 0

3 years ago

The table below shows the cost of downloading songs from a website. Number of Songs Total Cost 14 $8.96 16 $10.24 18 $11.52 If c

shepuryov [24]

Given:

c = total cost.

s = number of songs.

To solve this question, follow the steps below.

Step 01: Find 2 points (s, c).

You can choose 2 points from the table.

Let's choose (14, 8.96) and (16, 10.24).

Step 02: Substitute one point in the general equation.

Given the general equation:

$c=ms+b$

Substituting the first point.

$\begin{gathered} 8.96=14m+b \\ 8.96-14m=b \\ b=8.96-14m \end{gathered}$

Isolating b by subtracting 8.96 m from both sides:

$\begin{gathered} 14-8.96m=8.96m+b-8.96m \\ 14-8.96m=b \\ b=14-8.96m \end{gathered}$

Step 03: Substitute b in the general equation.

$\begin{gathered} c=ms+b \\ c=ms+8.96-14m \end{gathered}$

Step 04: Substitute the second point in the equation above.

$\begin{gathered} c=ms+8.96-14m \\ 10.24=16m+8.96-14m \\ 10.24=2m+8.96 \end{gathered}$

Step 05: Solve the equation above for m.

To do it, first, subtract 8.96 from both sides.

$\begin{gathered} 10.24-8.96=2m+8.96-8.96 \\ 1.28=2m \end{gathered}$

Now, divide both sides by 2.

$\begin{gathered} \frac{1.28}{2}=\frac{2}{2}m \\ m=0.64 \end{gathered}$

Step 06: Substitute m in the equation from step 02 to find b.

$\begin{gathered} b=8.96-14m \\ b=8.96-14\cdot0.64 \\ b=8.96-8.96 \\ b=0 \end{gathered}$

Step 07: Write the equation.

$\begin{gathered} c=0.64s+0 \\ c=0.64s \end{gathered}$

Answer:

c = 0.64s

7 0

2 years ago

1) Which statement contains an exact number? A) A gross of paper contains 144 sheets. B) One sheet of paper is 0.0042 inches thi

Phantasy [73]

Answer:

<em>B) One sheet of paper is 0.0042 inches thick</em>

Step-by-step explanation:

All the other values are not give from just a sheet of paper, and/or they are either a cumulative value, or values that will be used to calculate another value

Only option B defines a value for a unit of paper, and the value is definite.

Option A indicates the number in a group (gross)

Option C shows two values that can be used to calculate one value; the area.

Option D indicates an accumulated value of weight.

6 0

4 years ago

In 2010, Quinn paid $6,890 in federal income tax. In 2011, he paid $11,024. What is the percent of increase in the amount paid?

Effectus [21]

Answer:

It's a 60% increase from 2010 to 2011

6 0

3 years ago

share 400 sweets between two boys such that one boy gets 60 more sweets than the other. what are the two shares?

atroni [7]

Answer:

170, 230

Step-by-step explanation:

Let one boy gets x sweets .

Other boy gets x + 60 sweets .

Total = 400

x + x + 60 = 400

2x = 340

x = 170

So the other gets = 170 + 60 = 230

8 0

3 years ago