3 years ago

Which number is divisible by both 3 and 9?

Mathematics

2 answers:

Yakvenalex [24]3 years ago

8 0

The correct answer is choice C.

poizon [28]3 years ago

3 0

Answer:

Step-by-step explanation:

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X+y=4 X-3y=12 Graph?

AlekseyPX

I'll solve it algebraically

x+y=4
x-3y=12

multiply first equatoin by -1 and add to second

-x-y=-4
x-3y=12 +
0x-4y=8

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3 years ago

A sequence is defined by the recursive formula f(n+1)=f(n)-2. If f(1)=18, what is f(5)?

N76 [4]

Answer:

$f(5)=10$

Step-by-step explanation:

A sequence is defined by the recursive formula $f(n+1)=f(n)-2$

If $f(1)=18,$ then

for $n=1: f(2)=f(1+1)=f(1)-2=18-2=16$

for $n=2: f(3)=f(2+1)=f(2)-2=16-2=14$

for $n=3: f(4)=f(3+1)=f(3)-2=14-2=12$

for $n=4: f(5)=f(4+1)=f(4)-2=12-2=10$

7 0

3 years ago

Read 2 more answers