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Snowcat [4.5K]
3 years ago
6

In a two-digit number, the first digit is 5 less than the second digit. The number itself is three times the sum of its digits.

What is the number?
Mathematics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

Step-by-step explanation:

27

2+7=9

9x3=27

You might be interested in
Three subtracted from five times a number is -39. what number is?
Vesna [10]

Answer:

A) 5x - 3= -39

B) 5x = -39 + 3

5x = -36

x = -36/ 5

x= -7.2

4 0
2 years ago
In countries that use the metric system of measurement, corn yields are sometimes expressed in quintals per hectare (q/ha) inste
Fittoniya [83]

Answer:

The answer is below

Step-by-step explanation:

Different countries have different metric system of measurement, but the metric system of measurement accepted all over the world is the international system of unit (SI unit)

1 quintal =  220.462 lbs and 1 bushel of corn = 56 lbs.

151 q/ha = (151 × 220.462) lbs/ha = 33289.762 lbs/ha

But 1 hectare = 2.471 acre, hence:

33289.762 lbs/ha = \frac{33289.762\ lbs}{1\ ha*\frac{2.471\ acre}{1 \ ha} } =13472.182\ lbs/acre

Since 1 bushel of corn = 56 lbs, hence:

13472.182\ lbs/acre=\frac{13472.182\ lbs*\frac{1\ bushels}{56\ lbs} }{acre}=240.6\ bushels/acre = 240.6 bu/ac

For a Margin of Error: +/- 1 bu/ac, the bushels per acre = (239.6 bu/ac, 241.6 bu/ac)

5 0
3 years ago
A car has a mass of 2400 kg, correct to the nearest hundred kilograms.
erma4kov [3.2K]

Answer:

3805kg

Step-by-step explanation:

2400 ≥ 2350

1460 ≥ 1455

2400 + 1460≥ 2350 + 1455 = 3805

The lower bound is 3805kg

3 0
2 years ago
HELP! pleaseeee!!!!!!
lesya692 [45]

Answer:

1,2, and 4.

Step-by-step explanation:

Hi there! I know that i am kind of late, but the answer on Edge 2020 are options 1,2, and 4. I hope this helps, have a great rest of your day :D

3 0
3 years ago
Which of these numbers are irrational?<br>see in picture for answer choices ​
Likurg_2 [28]

Option A:

\sqrt{17}, \sqrt[3]{14} are irrational numbers.

Solution:

Given numbers:

$\sqrt{17} , 0, \sqrt[3]{8} , \frac{22}{7} , \sqrt{81} , \sqrt[3]{14}

To which of these are irrational numbers:

<u>Irrational:</u>

An irrational number cannot be written in the form \frac{a}{b}, where a and b are integers and b is non-zero.

(1) \sqrt{17} cannot be written as \frac{a}{b}.

So, it is a irrational.

(2) \sqrt[3]{8} =\sqrt[3]{2^3}

Cube and cube roots are get canceled.

\sqrt[3]{8} =2

2 is an integer. So it is not a irrational number.

(3) \frac{22}{7} is in the form \frac{a}{b}.

So it is not a irrational number.

(4)\sqrt{81}=\sqrt{9^2}

Square and square root are get canceled.

\sqrt{81}=9

9 is an integer. So it is not a irrational number.

(5) \sqrt[3]{14}

14 cannot be written as \frac{a}{b} form.

So, it is a irrational number.

Therefore \sqrt{17}, \sqrt[3]{14} are irrational numbers.

Option A is the correct answer.

6 0
3 years ago
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