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harkovskaia [24]
3 years ago
15

I need help please Ok

Mathematics
1 answer:
sergeinik [125]3 years ago
5 0
What’s the question????
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If y varies inversely as x and y is 2.5 when x is 6, what is y when x is 4?
Delicious77 [7]
Y=k/x
2.5=k/6
k=15

wheny x=4, y=15/4
                   y=3.75
6 0
3 years ago
Select the correct answer. Every dimension of a triangular pyramid is multiplied by 10 to produce a new figure that is geometric
BaLLatris [955]

Answer:

  • C. The surface area of the pyramid is multiplied by 100

Step-by-step explanation:

The area is the function of the two dimensions.

If each dimension has changed by 10 times, the the area will change by:

  • 10*10 = 100 times

Correct choice is C

3 0
2 years ago
Read 2 more answers
Answer this equation: 4 3/5 - -3 2/5 + 3
horrorfan [7]

Answer:

24

Step-by-step explanation:

4\frac{3}{5} -(-3\frac{2}{5})+3

Negative and another negative makes a positive.

4\frac{3}{5}+3\frac{2}{5}+3

Add the fractions first.

7\frac{5}{5}+3

5/5 is equivalent to 1. 7 5/5 becomes 8.

8+3

Add the numbers.

24

I hope this helps!

6 0
3 years ago
Read 2 more answers
Which of the following best describes an irrational number?
Furkat [3]

Answer:

Option D is correct.

D- A number that cannot be expressed as a fraction, , where p and q are integers

Step-by-step explanation:

Irrational number:

An irrational number can not be expressed as a fraction or ratio of  integers, like \frac{p}{q} where p and q are integers

And also it can not be expressed as terminating decimal or repeating decimal

Example of the irrational number is given below.

\sqrt{8}= 2.82842

\pi = 3.14285..

\sqrt{3}= 2.82842

Therefore option D (A number that cannot be expressed as a fraction, , where p and q are integers) is correct .  

8 0
2 years ago
What is the solution to this system:<br> 4x+9y=28<br> - 4x-y=-28
Degger [83]

Answer:

x = 7

y = 0

Step-by-step explanation:

→To solve this, you can use the elimination method. To do this, you must have one set of variables that can cancel each other out. In the problem given, we already have positive 4x and -4x, making them cancel out:

4x + 9y = 28

-4x - y = -28

__________

8y = 0

y = 0

<u>→Plug in 0 for y, into an equation:</u>

-4x - 0 = -28

-4x = -28

x = 7

6 0
3 years ago
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