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2 years ago

an object is 279.4 centimeters wide. if you divide the object into 10 equal parts, how wide will each part be?

Mathematics

2 answers:

Ivenika [448]2 years ago

8 0

Cercel ben Türkçe biliyorum ben Türkçe

alekssr [168]2 years ago

3 0

Very easy my dude.
279.4 / 10 = 27.94 cm.
Have a great day!

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Conjecture of the sum of the first 6 positive even numbers

ivann1987 [24]

Your answer would be 42

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3 years ago

The sum of three numbers of an AP is 12 and the sum of their cubes is 288 find the numbers.

son4ous [18]

Answer:

The numbers are 2 , 4 , 6 or 6 , 4 , 2

Step-by-step explanation:

For solution kindly refer to the attachment .

Related Information :- 

• The sum of n terms of an AP is ,

=> S = n/2 [ 2a + ( n - 1 ) d ]

• The nth term of an AP is ,

=> T_n = a + ( n - 1 ) d

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2 years ago

Using SET NOTATION, what is the solution set for the following equation? a² - 3 = 22

UNO [17]

The solution set is $\{-5,5\}$

Explanation:

The given equation is $a^{2}-3=22$

To determine the solution set of the equation, let us solve the equation.

Adding both sides of the equation by 3, we have,

$a^2=25$

Taking square root on both sides of the equation, we get,

$a=\sqrt{25}, a=-\sqrt{25}$

$a=5, a=-5$

Thus, the solution of the equation is $a=5, a=-5$

The solution set of the equation is the set which contains all the solutions of the equations.

Thus, writing the solutions of the equation using set notation, we have,

$\{-5,5\}$

Thus, the solution set is $\{-5,5\}$

4 0

2 years ago

0.2x + 0.3y = 1.3. 0.4r + 0.5y = 2.3. solve by using substitution

Alexxandr [17]

Answer:

x=2, y=3.

Step-by-step explanation:

0.2x + 0.3y = 1.3

0.4x + 0.5y = 2.3

From the first equation y = (1.3 - 0.2x) / 0.3

Substituting in second equation:

0.4x + 0.5(1.3 - 0.2x) / 0.3 = 2.3

Multiply through by 0.3:

0.12x + 0.5(1.3 - 0.2x) = 0.69

0.12x + 0.65 - 0.1x = 0.69

0.02x = 0.04

x = 2.

Substituting for x in equation 1:

0.2* 2 + 0.3y = 1.3

0.4 + 0.3y = 1.3

0.3y = 1.3 - 0.4 = 0.9

y = 3.

Check in equation 2:

0.4 * 2 + 0.5(3) = 0.8 + 1.5 = 2.3.

- Correct.

4 0

2 years ago

At a school, 60% of the sixth-grade students said that pizza is their favorite kind food. If 210 sixth-grade students prefer piz

Vika [28.1K]

Answer:

350

Step-by-step explanation:

Let $s=$ total number of sixth-grade students.

It is given that 60% of sixth-grade students prefer pizza which is equivalent to 210 sixth-grade students. With this, the following can be written:

$60\%s = 210$

$0.6s=210$ ( $60\%$ can be converted into the decimal form $0.6$ )

$s = 210\div 0.6$

$=350$

∴ There is a total of 350 sixth-grade students in the school.

Hope this helps :)

3 0

2 years ago