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oksian1 [2.3K]
3 years ago
9

-14=-20y-7x 10y+4=2x

Mathematics
1 answer:
elena55 [62]3 years ago
7 0
The two given equations are:
<span>-14=-20y-7x  and 10y+4=2x

In order to find x and y, we can do it by substitution or by elimination.

By Elimination.
</span><span>Multiply 10y+4=2x by 2
= 20y + 8 = 4x

Then add it to the second equation
</span>-20y - 7x = -14
20y - 4x = -8
---------------------
-11x = -22
x = 2

Then get y,
10y+4=2x 
10y = 2x - 4
10y = 2(2) - 4
y = 0.

So the answer is x = 2, y = 0
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Match each value to what it represents.
Serhud [2]

Answer:

Step-by-step explanation:

(5^3/2)^-2/3 = 0.2 ⇒ E

(256^0.5)^1.25 = 32 ⇒ C

(81^1/6)^3/2 = 3 ⇒ F

(1024^0.03)^20 = 64 ⇒ D

(1000^4/7)^7/3 = 10,000 ⇒ B

(49^5/2)^0.2 = 7 ⇒ A

Step-by-step explanation:

* Lets explain how to solve the problem

- If we have base x to a power n and all to the power of m then we

multiply the two powers to be one power on the base

- [(x^n)^m] = x^(nm)

* Lets solve the problem

∵

∴ (5^3/2)^-2/3 = 0.2 ⇒ E

∵

∵ 256 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = 2^8

∴

∴ (256^0.5)^1.25 = 32 ⇒ C

∵

∵ 81 = 3 × 3 × 3 × 3 = 3^4

∴

∴ (81^1/6)^3/2 = 3 ⇒ F (answer F must be 3 not 0.333)

∵

∵ 1024 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = 2^10

∴

∴ (1024^0.03)^20 = 64 ⇒ D

∵

∵ 1000 = 10 × 10 × 10 = 10³

∴

∴ (1000^4/7)^7/3 = 10,000 ⇒ B

∵

∴ (49^5/2)^0.2 = 7 ⇒ A

5 0
3 years ago
Using the numbers 4,4,10, and 12. And using any mathematical operator (multiplication,subtraction,addition, or subtraction) how
Gennadij [26K]
I believe one answer could be (4x4)=16-10=6+12=18+10=28-4=24?
6 0
3 years ago
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cricket20 [7]

Answer:

side a = 24

Step-by-step explanation:

∡a = ∡b =>  

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6 0
3 years ago
What is the distance between (-1, 4) and (5, 4)?
andreev551 [17]

Answer:

6 units

Step-by-step explanation:

when you graph the coordinates on a graph they are straight side ways from each other. then you count how (0,4) is 1 unit, (1,4) is 2 units, (2,4) is 3 units, (3,4) is 4 units, (4,4) is 5 units, and (5,4) is 6 units.

therefore the answer is 6 units.

hope this helps!

4 0
4 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=2%20%2B%202" id="TexFormula1" title="2 + 2" alt="2 + 2" align="absmiddle" class="latex-formula
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2+2=4 because 1+1+1+1 equals and those 2 problems are the same. You got to at least know 1+1+1+1.!
6 0
3 years ago
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