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3 years ago

PLEASE HELP ME !!!! WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY

Mathematics

2 answers:

tresset_1 [31]3 years ago

8 0

Answer:

Step-by-step explanation:

4x-2=3x+19

4x-3x=19+2

x=21

Nikitich [7]3 years ago

7 0

Answer:

Ok Its not that hard actually

Step-by-step explanation:

but still too much for me plz give brainliest to meee

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Y-1/4=-3/8 solve for y

Leona [35]

Answer:

y=-1/8

Step-by-step explanation:

Add 1/4 to -3/8

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3 years ago

Find the slope of the given points (2,5) and (8,-3) and write the equation

max2010maxim [7]

Answer:

Slope = $\frac{-4}{3}$

4x + 3y = 23

Step-by-step explanation:

slope = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{-3-5}{8-2} =\frac{-8}{6} =\frac{-4}{3}$

The equation:

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$y-y_{1}=m(x-x_{1} )$

y - 5 = -4/3 (x - 2) Multiply both sides by 3

3y -15 = -4 (x - 2)

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7 0

3 years ago

If f(x) = -3x - 5 and g(x)= 4x - 2, find (f-g) (x).

Eddi Din [679]

Answer:

$-7x-3$

Step-by-step explanation:

$(f-g)(x)$ just means $f(x)-g(x)$ .

$-3x-5-(4x-2)\\-3x-5-4x+2\\-7x-3$

4 0

3 years ago

one days discharge at its mouth, 3 trillion gallons, could supply all of country A’s household for 5 months. how much water an a

serious [3.7K]

let's use engineering notation for the sake of brevity.

1 trillion is 1,000,000,000,000, or just 1E12, twelve zeros.

1 million is then 1E6, six zeros.

we know the discharge for one day is 3E12 gallons, and that'd do just fine for country A for 5 months. How many gallons in 1 month only?

$\bf \begin{array}{ccll} gallons&months\\ \cline{1-2} 3E12&5\\ x&1 \end{array}\implies \cfrac{3E12}{x}=\cfrac{5}{1}\implies 3E12=5x \\\\\\ \cfrac{3E12}{5}=x\implies 6E11=x\implies 600000000000=x$

if there are 200million inhabitants in A, namely 200E6 or 2E8 inhabitants, how many gallons per inhabitant from all those 6E11 gallons?

$\bf \begin{array}{ccll} gallons&households\\ \cline{1-2} 6E11&2E8\\ x&1 \end{array}\implies \cfrac{6E11}{x}=\cfrac{2E8}{1}\implies 6E11=2E8x \\\\\\ \cfrac{6E11}{2E8}=x\implies \cfrac{600000000000}{200000000}=x\implies 3000=x$

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3 years ago

How to workout and the answer for -27x^3(-x^7) ÷16x^4

Helen [10]

Answer:27x^6 /16

Step-by-step explanation:27x^3 x x^7 divided by 16x^4

then simplify the expression which will be 27x^3 x x^3 divided by 16

then calculate the product which is x^3 x x^3 which is x^6 so your answer is 27x^6/16.

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3 years ago