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3 years ago

(3z+1)+5+7z) Step by step explanation needed

Mathematics

1 answer:

Tju [1.3M]3 years ago

8 0

Answer: 10z + 6

Step-by-step explanation:

this is a short problem.. sometimes you would need to distribute, but since there is no number in front of parenthesis you can just get rid of them

that gives you: 3z + 1 +5 + 7z

now from here we combined liked terms

7z + 3z = 10z

1 + 5 = 6

so that gives you: 10z + 6

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4 years ago

The vertices of triangle PQR are given in the standard (x,y) coordinate plane below. What is the area, in the square coordinate

alekssr [168]

Answer:

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Step-by-step explanation:

Given

See attachment

Required

Area of $\triangle PQR$

From the attached image, we have:

$P = (6,10)$

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$R = (6,4)$

The area is then calculated as:

$A = \frac{1}{2}|(x1y2 - x2y1) + (x2y3 - x3y2) + (x3y1 - x1y3)|$

So, we have:

$A = \frac{1}{2}|(6*8 - 10*10) + (10*4 - 6*8) + (6*10 - 6*4)|$

Using a calculator:

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Remove absolute bracket

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