Can someone explain these two math questions to me? −2 + 4 ⋅ 32 − 6 5 + 42 ÷ 2(3)

Mathematics

2 answers:

zepelin [54]3 years ago

8 0

The first one would be 120 the second one would be 68

Solnce55 [7]3 years ago

5 0

So, if you are trying to solve this, you would have to use PEMDAS. so how you would solve this is,you would multiply first then add and subtract.
-2+4* 32-6= (steps below)
4* 32=128
-2+128- 6= 120.

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Can someone show me how to write the standard form of the line that contains a slope of 2/3 and passes through the point (1, 1)?

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Answer:

$\large\boxed{y=\dfrac{2}{3}x+\dfrac{1}{3}\qquad\text{slope-intercept form}}\\\\\boxed{y-1=\dfrac{2}{3}x-\dfrac{2}{3}\qquad\text{point-slope form}}\\\\\boxed{2x-3y=-1\qquad\text{standard form}}$

Step-by-step explanation:

$\text{The standard form:}\ Ax+By=C$

$\text{The point-slope form:}\\\\y-y_1=m(x-x_1)\\\\m-slope\\\\\text{We have the slope}\ m=\dfrac{2}{3}\ \text{and the point}\ (1,\ 1).\ \text{Substitute:}\\\\\underline{y-1=\dfrac{2}{3}(x-1)}\qquad\text{use the distributive property}\\\\y-1=\dfrac{2}{3}x-\dfrac{2}{3}\qquad\text{add 1 to both sides}\\\\\underline{y=\dfrac{2}{3}x+\dfrac{1}{3}}$

$y=\dfrac{2}{3}x+\dfrac{1}{3}\qquad\text{multiply both sides by 3}\\\\3y=2x+1\qquad\text{subtract 2x from both sides}\\\\-2x+3y=1\qquad\text{change the signs}\\\\\underline{2x-3y=-1}$