Ask question

Ask question

All categories

3 years ago

7

Write the equivalent fraction, the reduced fraction, and the decimal equivalent for 45%. Jenny solved this problem and her work

is shown below. What mistake did she make? 45% = 45/100 = 9/20 = 4.5

2 answers:

Viktor [21]3 years ago

7 0

The decimal is 0.45, as 4.5 is above 100%

Natalka [10]3 years ago

6 0

The answer is supposed to be 0.45. She most likely made the mistake when she was moving the decimal in the last step.

You might be interested in

Victoria knit a total of 18 centimeters of scarf over 3 nights. How many nights will victoria have to spend knitting in order to

svet-max [94.6K]

Well the unite rate is 6 over 1 night, so I’m guessing it would take her 7 nights to knit 42 centimeters.
Hope this helps! I really did try :) :/

7 0

2 years ago

Use technology or a z-score table to answer the question.

Drupady [299]

Answer:

C

Step-by-step explanation:

Finding the z-score:

z = (x - μ) / σ

z = (66 - 57) / 9

z = 1

Using a z-score table or calculator:

P(z < 1) = 0.8413

84.13% of 4000 is:

0.8413 (4000) = 3365.2

Rounding up to the nearest whole number, approximately 3366 students will score less than 66. Answer C.

8 0

3 years ago

Anastasia took a math test and scored 153 points which was 90% of the total possible points. How many possible points were on th

Ronch [10]

Answer: 170

Step-by-step explanation: 170x90% (0.9) = 153

7 0

3 years ago

a village having a population of 4000, requires 150 litres of water per head per day. it has a tank measuring 20m x 15m x 6m. fo

allochka39001 [22]

The water will last for 3 days

<em><u>Solution:</u></em>

Given that, village having a population of 4000, requires 150 litres of water per head per day

<em><u>Let us first find the volume of tank</u></em>

The tank measuring 20m x 15m x 6m

Length = 20 m

Breadth = 15 m

Height = 6 m

$volume\ of\ tank = length \times breadth \times height$

$Volume\ of\ tank = 20 \times 15 \times 6 = 1800$

Thus volume of tank is 1800 cubic meter

From given,

Water required per person per day = 150 liters

<em><u>Therefore, water required for 4000 people per day is:</u></em>

$\rightarrow 4000 \times 150 = 600000 \text{ liters }$

Convert to meters

$600000 \text{ liters } = 600000 \times \frac{1}{1000}\ m^3\\\\600000 \text{ liters } = 600\ m^3$

<em><u>How many days will the water of this tank last?</u></em>

$\text{Number of days water will last } = \frac{\text{volume of tank}}{\text{total water required per day}}$

$\text{Number of days water will last } = \frac{1800}{600} = 3$

Thus the water will last for 3 days

5 0

3 years ago

Simplify: <br><br> a)23p-7p<br> b)3ab-9ab+7ab

natima [27]

a) 16p

b) 1ab

hope i helped

5 0

3 years ago