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4 years ago

"jose is r years old. keith is 3 times as old as he is. lara is 4 years younger than keith." find keith's age in terms of r

Mathematics

1 answer:

andrew-mc [135]4 years ago

5 0

Keith 's age is now 3r

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What problem is Chen checking 152x4=608+2=610

tester [92]

The +2 is a reminder to add when he multiply 4*1 (4*1=4+2=6)
4*2=8
4*5=20 (so he writes the 0 with a remainder of 2)
4*1=4+2=6
so,
152x4= 608

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3 years ago

What is the factor of 4x subtracted from 28 ?

jolli1 [7]

Answer:

I think its (2x+4)(2x+7)

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3 years ago

Answer two questions about Equations A and B:

viktelen [127]

Answer:

a= -1

Step-by-step explanation:

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3 years ago

A grasshopper jumps off a tree stump. The height, in feet, of the grasshopper above the ground after t seconds is modeled by the

Monica [59]

The height, in feet, of the grasshopper above the ground after t seconds is modeled by the function , which is

$h(t) =-t^2+\frac{4}{3}t+ \frac{1}{4}$

When the grasshopper land on the ground,

$h(t)=0$

that is,

$-t^2+\frac{4}{3}t+ \frac{1}{4}=0$

Multiplying whole equation by 12 to get rid of denominators 3 and 4

$-12t^2+16t +3=0$

$(3-2t)(6t+1)=0 \\ 3-2t=0 , 6t+1=0 \\ t= \frac{3}{2} , \frac{-1}{6}$

And time cant be negative, so the correct option is

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Correct option is C .

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4 years ago

Somebody please help me ive been trying for hours

elixir [45]

Answer:

width = 5k^2

length( 3k^2 +7k +4)

Step-by-step explanation:

15k^4 +35k^3 +20k^2

The width is the greatest common factor

We can factor 5k^2 out

5k^2( 3k^2 +7k +4)

The length is what is inside the parentheses

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4 years ago