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amid [387]
3 years ago
11

(solve the literal equation for y ). 1.) 8x + 2y = 18 2.) 7x - y = 35

Mathematics
2 answers:
IgorC [24]3 years ago
5 0

Answer:

y = -7

Step-by-step explanation:

distribute a 2 across each term in the second equation to get:

14x - 2y = 70  

now add it to the first equation to get:

22x = 88

x = 4

now substitute 4 for 'x' in either equation to get value of 'y':

7(4) - y = 35

28 - y = 35

-y = 7

y = -7

<u>Check</u>:

8(4) + 2(-7) = 18

32 - 14 = 18

18 = 18

nekit [7.7K]3 years ago
4 0

1. Write in y=mx+b Form 8x+2y=18. 8x+2y=18 8 x + 2 y = 18. The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept.

2. Simple and best practice solution for 7x-y=35 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand,

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Factor the expression given below. Write each factor as a polynomial in
kherson [118]

The factorization of the expression of 43x³ + 216y³ is

(7x + 6y)(49x² - 42xy + 36y²)

Step-by-step explanation:

The sum of two cubes has two factors:

1. The first factor is \sqrt[3]{1st} + \sqrt[3]{2nd}

2. The second factor is ( \sqrt[3]{1st} )² - ( \sqrt[3]{1st} ) ( \sqrt[3]{2nd} ) + ( \sqrt[3]{2nd} )²

Ex: The expression a³ + b³ is the sum of 2 cubes

The factorization of a³ + b³ is (a + b)(a² - ab + b²)

∵ The expression is 343x³ + 216y³

∵ \sqrt[3]{343x^{3}} = 7x

∵ \sqrt[3]{216y^{3}} = 6y

∴ The first factor is (7x + 6y)

∵ (7x)² = 49x²

∵ (7x)(6y) = 42xy

∵ (6y)² = 36y²

∴ The second factor is (49x² - 42xy + 36y²)

∴ The factorization of 43x³ + 216y³ is (7x + 6y)(49x² - 42xy + 36y²)

The factorization of the expression of 43x³ + 216y³ is

(7x + 6y)(49x² - 42xy + 36y²)

Learn more:

You can learn more about factors in brainly.com/question/10771256

#LearnwithBrainly

6 0
3 years ago
PLEASE HELP ME EMERGENCY PLEASE HELP!! IF YOU ARE NOT 100% SURE ABOUT YOUR ANSWER DO NOT ANSWER THEN PLEASE!!
kolezko [41]
A is a correct answer
6 0
3 years ago
Read 2 more answers
If you put a link, you will be reported.
JulsSmile [24]

Answer:

what the heck is this my dude.

Step-by-step explanation:

What grade you in???

6 0
3 years ago
The highest and lowest temperatures of Town X were 4°C and -18°C respectively. Find the difference between these two temperature
prisoha [69]

Answer:

Difference: 4-(-18)=22

                             =22 degrees celcius

Lowest temperature: 12 degrees higher that -18 degrees

                                  = 12+(-18)

                                  = -6 degrees celcius.

Step-by-step explanation:

4 0
3 years ago
HELP<br> Use the definition of continuity and the properties of limits to show that’s the function…
Solnce55 [7]

Answer with Step-by-step explanation:

We are given that

g(x)=(x^2-3x-10)(x^2+2x^2-5x+4)

x=-1

Using property of limit

\lim_{x\rightarrow -1}g(x)=\lim_{x\rightarrow -1}(x^2-3x-10)(3x^2-5x+4)

=(1+3-10)(3+5+4)

=(-6)(12)

=-72

g(-1)=(1+3-10)(1+2+5+4)

g(-1)=(-6)(12)=-72

\lim_{x\rightarrow -1}g(x)=g(-1)

Hence, the function is continuous at x=-1

4 0
3 years ago
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