Question: What is the diameter of a circle with circumference 19cm? give your answer to three significant figures. pls help me in this math subject I give many points. who answer the first one I give the brainliest:)

Step-by-step explanation:

circumference of a circle is=2×22/7×r

19=22/7×r

19=22/7r

19×7=22r

133=22r

133/22=22r/22

6.05=r

12.20=diameter

5 pm

step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.