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irakobra [83]
2 years ago
12

Gradpoint, please help lol. Simple answer please.

Mathematics
1 answer:
Flauer [41]2 years ago
7 0

Answer:

30/441

Step-by-step explanation:

6/21 chance to draw nickel on the first one. since you dont replace coins, there is a 5/20 chance of drawing a dime on the next one.

6/21x5/20= 30/441

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At a restaurant you only have 20 dollars to spend on dinner. in addition to the cost of the meal you must pay only 5% sales tax
aev [14]
Alright so to do this you need some basic algebra
you have to pay an extra 20% of whatever you buy
thus we can make the following equation
.2x+x=20  (since 20 is the amount of money you have)
combining the like terms,
1.2x=20
and finally, dividing both sides by 1.2
x=$16.67
don't forget to check!
.05*16.67=.83 (sales tax makes the total $17.5)
.15*16.67=2.5 (tip makes the total $20)
whaddya you know, it works!
most expensive item you can buy will cost $16.67
hope this helped!
4 0
3 years ago
I need help asap plot it or locate it!
natulia [17]

You can plot this by turning the fraction into a decimal. -1&1/3rds is -1.333... and 1/6ths is about .16, so then you can find these points on the number line. Also, the number line has 6 points equal one, so the points by those.

3 0
3 years ago
Read 2 more answers
A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i what is the students mistakes
Rufina [12.5K]

Answer:

1. In the multiplication of the imaginary parts, the student forgot to square of i. OR

2. The student has only multiplied the real parts and the imaginary parts.

Correct value =22+7i.

Step-by-step explanation:

The given expression is

(4+5i)(3-2i)

A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i.

Student's mistake can be either 1 or second:

1. In the multiplication of the imaginary parts, the student forgot to square of i.

2. The student has only multiplied the real parts and the imaginary parts.

(4+5i)(3-2i)=4\times 3+5\times (-2)i=12-10i

Which is not correct. The correct steps are shown below.

Using distributive property, we get

4(3-2i)+5i(3-2i)

4(3)+4(-2i)+5i(3)+5i(-2i)

12-8i+15i-10i^2

12+7i-10(-1)       [\because i^2=-1]

12+7i+10

22+7i

Therefore, the correct value of (4+5i)(3-2i) is 22+7i.

4 0
3 years ago
7 is not an example of <br> A) a variable <br> B) an expression <br> C) a constant <br> D) a term
Varvara68 [4.7K]

Answer:

A) a variable

Step-by-step explanation:

A) a variable    a variable changes value  7 does not change

B) an expression    does not have an equal sign  7 does not have an equal sign

C) a constant  7 is constant, it does not change  

D) a term  is a group of numbers and variables with no operators

6 0
3 years ago
Read 2 more answers
I need help with this trigonometry question.
Pani-rosa [81]
I don’t remember how to do a and b but A is 39
6 0
3 years ago
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