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3 years ago

Yall i need an answer within a half hour im stuck

Mathematics

2 answers:

Masteriza [31]3 years ago

5 0

Answer:

26 is the answer

mark me brainliest

tresset_1 [31]3 years ago

4 0

Answer:

26 more mile per gallon

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Find an equation for the line that passes through the points (5.-5) and (-4,-2)

ANEK [815]

Answer:

$\large\boxed{y=-\dfrac{1}{3}x-\dfrac{10}{3}\to x+3y=-10}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (5, -5) and (-4, -2).

Substiute:

$m=\dfrac{-2-(-5)}{-4-5}=\dfrac{-2+5}{-9}=\dfrac{3}{-9}=-\dfrac{1}{3}$

Put the value of the slope and the coordinates of the point (5, -5) to the equation of a line:

$-5=-\dfrac{1}{3}(5)+b$

$-5=-\dfrac{5}{3}+b$ add 5/3 to both sides

$-\dfrac{15}{3}+\dfrac{5}{3}=b\\\\-\dfrac{10}{3}=b\to b=-\dfrac{10}{3}$

Finally we have the equation of a line in the slope-intercept form:

$y=-\dfrac{1}{3}x-\dfrac{10}{3}$

Convert to the standard form (Ax + By = C):

$y=-\dfrac{1}{3}x-\dfrac{10}{3}$ multiply both sides by 3

$3y=-x-10$ add x to both sides

$x+3y=-10$

4 0

3 years ago

Solve the quadratic equation by factorisation: x2-3x - 10 = 0

frez [133]

Answer:

x=−2

Step-by-step explanation:

4 0

3 years ago

1. Solve for the variable. x - 4.5 = 11.3

polet [3.4K]

Answer:

15.8

Step-by-step explanation:

do 11.3 + 4.5 = 15.8

7 0

3 years ago

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Help me with number 3 please

ratelena [41]

3(n+2) ← algebraic expression

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3 years ago

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Where I had $480 he used 2/3 of it to buy an electric van he also bought a tea set for $60 how

yawa3891 [41]

2/3 of 480 is 480 divided by 3 and that number times 2, which is 320. The man or woman probably used $60 of this to buy the tea set, which leaves them with $260.

8 0

3 years ago