3 years ago

(01.01 LC) Evaluate the expression 3(7 + 4)2 - 14 - 7.

Mathematics

1 answer:

Flauer [41]3 years ago

6 0

Answer:

Step-by-step explanation:

3(11)2-14-7

33*2-14-7

66-14-7

52-7

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Is 3/4 greater or less than 2/3

Delvig [45]

It is greater since 3/4 is equal to 9/12 and 2/3 is equal to 8/12. out of that info you get that 3/4 is greater than 2/3. hope this helps. :)

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3 years ago

Read 2 more answers

Find the centroid of the triangle with these vertices: P (-1,7), Q (9,5), and R (4,3).

Mumz [18]

Answer:

The coordinates of the centroid are:

$O\:=\:\left(4,\:5\right)\:\:$

The diagram is also attached below.

Step-by-step explanation:

Given the vertices

P (-1, 7)

Q (9, 5)

R (4, 3)

We know that the intersection of medians brings the centroid of the triangle.

The centroid of a triangle is given by

$O\:=\:\left(\frac{P_x+Q_x+R_x}{3},\:\frac{P_y+Q_y+R_y}{3}\:\right)$

In this example,

$P_x=-1,\:P_y=7$

$Qx=9,\:Q_y=5$

$Rx=4,\:R_y=3$

substituting in the formula

$O\:=\:\left(\frac{-1+9+4}{3},\:\frac{7+5+3}{3}\:\right)\:\:$

$O\:=\:\left(\frac{12}{3},\:\frac{15}{3}\:\right)\:\:$

$O\:=\:\left(4,\:5\right)\:\:$

Therefore, the coordinates of the centroid are:

$O\:=\:\left(4,\:5\right)\:\:$

The diagram is also attached below.

6 0

3 years ago

Can someone please help me with this. Show your work please.<br><br> -2x² - 5x<br> if x = -4

Ierofanga [76]

Answer:

-2x^2 - 5x

= -2-4^2 - 5*-4

= -2(-4 * -4 ) - (-20)

= -2(-16) +20

= -32 + 20

= -12

Step-by-step explanation:

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4 years ago

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I need help asap plsss

ira [324]

50.16 cause it says 5 ten times the value

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3 years ago

Tim worked twenty hours during the last five days assuming that he worked the same amount of hours each day, how long did he wor

algol [13]

Answer:

he worked 4 hours each day

Step-by-step explanation:

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3 years ago