2 years ago

Solve the simultaneous equations. 6x+5y=20 5x+2y=21

Mathematics

1 answer:

Drupady [299]2 years ago

8 0

6x+5y-20=0

that is the first one

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What is the slope of the line of (1,0) and (-1,-3)

Alinara [238K]

Slope formula: m = $\frac{(y2-y1)}{(x2-x1)}$ (Knowing that m represents the slope)

Substitute (1,0) for (x1,y1), and (-1,-3) for (x2,y2)

Slope of the line of (1,0) and (-1,-3) is:

m = $\frac{(-3-0)}{(-1-1)}$ = $\frac{-3}{-2}$ = $\frac{3}{2}$

(Simplify)

Slope of the line of (1,0) and (-1,-3) is $\frac{3}{2}$

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2 years ago

Let f(x)=2x+3 and g(x)=x×x-1<br>find a. f(g(x)) b.g(f(x))<br><br>

Talja [164]

Answer:

See explanations below

Step-by-step explanation:

Given the functions f(x)=2x+3 and g(x)=x^2-1

a. Find f(g(x))

f(g(x)) = f(x^2-1)

f(g(x)) = 2(x^2-1)+3

f(g(x))= 2x^2-2+3

f(g(x)) = 2x^2+1

Hence the composite function f(g(x)) is 2x^2+1

b) g(f(x)) = g(2x+3)

g(f(x) = (2x+3)^2-1

g(f(x)) = 4x^2+12x+9-1

g(f(x)) = 4x^2+12x+8

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1 year ago

Solve the inequality 11 < x - 16

asambeis [7]

Answer:

The choice B.

$x > 27$

Step-by-step explanation:

$11 < x - 16 \\ 11 + 16 < x - 16 + 16 \\ 27 < x \\ x > 27$

I hope I helped you^_^

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1 year ago

REVIEW EXERCISES Find the deduction per pay period. 27. Annual cost of insurance: $6,800 Employer pays 75% 24 pay periods 28. An

Alexus [3.1K]

Answer:

I hope this is correct

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2 years ago

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Which number is the additive inverse of 47? Hi. SI56 -47 1 W om 04

Anvisha [2.4K]

Answer:

4 $\frac{1}{4}$

Step-by-step explanation:

The additive inverse is the value that must be added to the number to give zero.

- 4 $\frac{1}{4}$ + 4 $\frac{1}{4}$ = 0

↑ additive inverse

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2 years ago