MATHEMATICS MIDDLE SCHOOL

A block of wood has a mass of 120 g Qubed and a volume of 200cm what is density of wood

Answers

Answer 1

Answer:

Mass = 120g, Volume = 0.0002 $\m^3$

Density = $(mass)/(volume)$

∴ Density = $(120)/(0.0002)$

= 600,000 g/ $\m^3$

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Simplify a squared x b x b four x b

Answers

Answthat 16 is 42,

Step-by-step explanation:

Understand factoring. ...

Divide by the smallest prime number possible. ...

Rewrite the square root as a multiplication problem. ...

Repeat with one of the remaining numbers. ...

Finish simplifying by "pulling out" an integer. ...

Multiply integers together if there are more than one.

At the market, 555 light bulbs cost \$9$9dollar sign, 9.
How much do 777 light bulbs cost?

Answers

Question:

At the market, 5 light bulbs cost $9. How much do 7 light bulbs cost?

Answer:

Cost of 7 bulbs is $ 12.6

Solution:

Given that,

5 light bulbs cost $ 9

Find the cost of 1 bulb

Cost of 1 bulb is found by dividing the cost of 5 bulbs by 5

$cost\ of\ 1\ bulb = \frac{\text{cost of 5 bulbs}}{5}\n\ncost\ of\ 1\ bulb = (9)/(5)\n\ncost\ of\ 1\ bulb = 1.8$

Thus cost of 1 bulb is $ 1.8

Find the cost of 7 bulbs:

$cost\ of\ 7\ bulbs = 7 * \text{cost of 1 bulb }\n\ncost\ of\ 7\ bulbs = 7 * 1.8\n\ncost\ of\ 7\ bulbs = 12.6$

Thus cost of 7 bulbs is $ 12.6

Answer:

7 bulbs equals 12.6

Step-by-step explanation:

PLZ HELP! WILL GIVE BRAINLIEST!

Answers

The Answer:The 3 one.

Answer:

A. $946.16

Step-by-step explanation:

First, when you set up the problem, you have to multiply .31 by the amount of money she has. Which gives you the answer of $1039.74. Next, you multiply .09 by $1039.74, which gives you answer of $93.5766. Now you just have to round it an it gives you answer of $946.16. I hope this helps, and I am so sorry if I am wrong!

An investment of $5000 earns $6000 simple interest in 12 years. Calculate the interest rate.Please show working out

Answers

Answer:

10%

Step-by-step explanation:

To solve this problem we can use a modified version of the simple interest formula which is shown below:

$r=(I)/(Pt)$

I = interest amount

P = principal amount

t = time (years)

Lets plug in the values:

$r=(6000)/((5000)(12))$

$r=0.1$

The last step is to convert 0.1 into a percent:

0.1(100) = 10

The interest rate is 10%

What number is more than -0.8 but less than -0.1

Answers

Answer:

-0.7

its easy hehe just - 1

A sales associate at a computer store receives a bonus of $100 for every computer he sells. He wants to make $2,500 in bonuses next month. Write and solve an inequality to find the minimum number of computers he must sell.

Answers

Answer:

The inequality that describes this problem is $100x \ge 2500$ , and the minimum number of computers he must sell is 25.

Step-by-step explanation:

Since there is no restriction on the number of computers he must sell, an inequality can help us describe the situation.

Writing the inequality.

Let x be the number of computers he sells the next month, since he receives a bonus of $100 per computer he sells the total amount he will make for x computers is

$100x$

And since he wants to make $2,500 in bonuses, the inequality that describes that situation is

$100x \ge 2500$

Solving the inequality.

In order to find the exact number of computers he must sell, we need to solve for the inequality.

$100x \ge 2500$

Since 100 is multiplying to x, in order to move that 100 to the other side, we need to apply the inverse operation to multiplication, which is division. We can then divide both sides by 100

$\cfrac{100x}{100} \ge \cfrac{2500}{100}$

So then we can simplify to get

$x \ge 25$

Thus the minimum number of computers he must sell is 25.

$100x should be greater than or equal to $2500. X being the number of computers sold. If you divide 100 by 2500 you will know how many computers he need to sell.
$100x >(or equal to) $2500

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