Draw one row of two unit cubes stacked on top of another row of unit cubes

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soldi70 [24.7K]

$a) \: 17 - 3 \frac{1}{5}$

$17-\frac{3\times 5+1}{5}$

LCM=5

$17-\frac{16}{5}$

$17\times \frac{5}{5}-\frac{16}{5}$

$\frac{85}{5}-\frac{16}{5}$

$\frac{69}{5}$

$13 \frac{4}{5}$

$b) \: 2\frac{1}{5}+4\frac{1}{4}+\frac{7}{10}$

$6+\frac{1}{5}+\frac{1}{4}+\frac{7}{10}$

LCM=20

$6+\frac{4}{20}+\frac{5}{20}+\frac{14}{20}$

$6+\frac{23}{20}$

$6+1\frac{3}{20}$

$7\frac{3}{20}$

8 0

2 years ago

It's a comon core math question the teacher is nice but.... She dosent like helping students out

Luba_88 [7]

Answer: Well i mean thats a personal question but tell your teacher that she not being much help.

Step-by-step explanation:

7 0

2 years ago

A recent study was conducted to determine the concentration of lead in drinking water across various states. 25 water samples fr

Nataliya [291]

Answer:

When is at a significance level of 0.0001, the concentration of lead is above in water from Minnesota.

Step-by-step explanation:

The Significance level is the calculation or estimation of the strength of proof that must be seen in a sample, before the hypothesis will be rejected and concluded that the result is statistically true or correct.

In this case, when a data is calculated to be significant at 0.0001 from a recent duty, what the significance level implies in this case is that, at a level of 0.001, the concentration of lead is above or higher in water from Minnesota.

8 0

3 years ago

A car travels at a speed of 64 km/h. Find the distance travelled in 4½ hours.

nordsb [41]

Answer: 160m

Explanation: I hope this helps <3

6 0

2 years ago

Evaluate the following expression.<br> 53<br> Enter the answer

givi [52]

Answer:

125

Step-by-step explanation:

5^3 = 5 ✕ 5 ✕ 5, and 5 ✕ 5 ✕ 5 = 125

Hope this helps :)

3 0

2 years ago

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