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3 years ago

13

in speech class,you lose 3 points for every 30 seconds you go over the time limit.your speech is 90 seconds over the time limit

what interger represents the change in your points

1 answer:

Cerrena [4.2K]3 years ago

4 0

You’d loose 9 points if that’s the question

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A 100-point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response

Alex17521 [72]

Answer: 3x+8y=100

x+y=20

x=12

y=8

Step-by-step explanation: x would represent the number of multiple choice questions and y would represent the number of short response questions. the multiple choice questions were 3 points meaning that you need to find x. the short answer response questions were 8 points meaning you need to find y. altogether you need to get 100 points. for the second equation you have 20 questions that need to be both multiple choice and short response. therefore the second equation would be x+y=20. if you solved this, the answer would be that x equals 12 and y equals 8. hope this helped! :))

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3 years ago

Find the exact value of sin ( 7 π 4 ) using reference angles

Firdavs [7]

Answer:

-1/root2

Step-by-step explanation:

7pi/4 radians is the same as -pi/4 radians

sin(-pi/4) is -sin(pi/4) = -1/root2

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3 years ago

Find the square: (5x - 4y)2 <br><br> (and please put the process of solving the equation)

satela [25.4K]

$(5x-4y)^2$
$(5x-4y)(5x-4y)$

Multiply each term in one bracket in turn by the terms in the other bracket

$(5x)(5x) = 25x^2$
$(5x)(-4y)=-20xy$
$(-4y)(5x)=-20xy$
$(-4y)(-4y)=16y^2$

Put them together we have
$25x^2-20xy-20xy-16y^2$
$25x^2-40xy-16y^2$

7 0

2 years ago

Rachel walks to a friends house then to the store then back home. the distance from Rachel’s house to her friends house is 1 5/6

ryzh [129]

Answer:

11/12 miles hope this helps :)

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3 years ago

Need to show work. <br> y + 12 = 41

AnnyKZ [126]

Answer:

y=29

Step-by-step explanation:

y+12 - 12 = 41 -12

y=29

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3 years ago

Read 2 more answers