3 years ago

Maje a ten or hundred to add mentally

Mathematics

1 answer:

NeTakaya3 years ago

6 0

You can add numbers mentally if there are zero's behind them.

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Compare -1.5 and -4.5

fomenos

Answer:

-3

Step-by-step explanation:

There's a three point distance between the two on a coordinate plane

3 0

3 years ago

As Sally and George practice for the SAT their scores on practice test rise Sally’s current score is 850 and it is rising by 10

aleksley [76]

Answer:

a) 7 weeks b) George's

Step-by-step explanation:

Sally's score can be modeled by 10x+850.

George's score can be modeled by 50x+570.

We can set them equal to each other to see when they intersect.

10x+850=50x+570

40x=280

x=7

If George overtakes her in the 7th week, of course he'll have the higher score in 12 weeks.

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3 years ago

16. The graph of the function

den301095 [7]

$\text{Hello there!}\\\\\text{Our original equation is: y = 4x + 1}\\\\\text{Our new equation must be translated 3 units up}\\\\\text{This means that we're going up on the y axis, meaning that our}\\\text{"beginning point" will change}\\\\\text{Our beginning point is 1, so just add 3 to it}\\\\1+3 = 4\\\\\text{Put 4 as your beginning point in the equation:}\\\\y=4x+4\\\\\boxed{\text{Answer: y = 4x + 4}}$