3 years ago

Someone please help me with this !!!

Mathematics

1 answer:

ser-zykov [4K]3 years ago

7 0

It is the first one, so where it is marked is already correct

You might be interested in

What is the square root of –16? –8i –4i 4i 8i

Ad libitum [116K]

we know that

$i^{2} =-1$

we have

$\sqrt{-16} =\sqrt{(-1)*(16)} =\sqrt{(-1)*(4^{2})}$

substitute the value of $i^{2}=-1$ in the expression above

$\sqrt{(-1)*(4^{2})}=\sqrt{i^{2}*4^{2}} \\ \\= 4i$

therefore

the answer is

$4i$

7 0

3 years ago

Read 2 more answers

There is a stack of 8 cards each given a different number from 1 to 8. Suppose we select a card randomly from the stack, replace

Alex Ar [27]

Answer:

Step-by-step explanation:

odd numbers are 1,3,5,7

number of odd cards=4

Total number of cards=8

Number of cards less than 4=3 {1,2,3}

$Required~probability=\frac{4}{8} *\frac{3}{8} =\frac{3}{16}$

3 0

3 years ago

Read 2 more answers

A family eats dinner and the cost of the meal totals $50, before tax. The tax rate is 10% They also want to tip 20% of the bill,

Butoxors [25]

Answer:

66.00

Step-by-step explanation:

Convert 10% to a decimal by moving the point from 10. to 0.10 (back two places) and multiply it by 50 which gives you $5, which equals the tax they payed. Now they want to tip 20% of the entire bill including tax, so convert 20% to a decimal 20. to 0.20. Now multiply .20 * 55(55 is the $50 payed in meals and the $5 payed in taxes added) And you get $11 for the tip. Add 55 +11 and there's your answer

8 0

4 years ago

Read 2 more answers

Find P(3) when p = 0.80

kupik [55]

Answer:

ccccccccccc

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Determine the value of −14.1 × (-7.33)