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V125BC [204]
3 years ago
15

Multiply 7x^2 ( 2x^3 + x^3 - 3 )

Mathematics
2 answers:
storchak [24]3 years ago
4 0

Answer:

21x^5−21x^2

Step-by-step explanation:

hope this helps

12345 [234]3 years ago
3 0

Answer:

multiply the on in the perentaties first

Step-by-step explanation:

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Does BBC live matter why or why not?
almond37 [142]

Answer:

THIS IS NOT A MATH QUESTION HOWEVER GIVE MY. ANSWER AS BRAINLIST ANSWER

3 0
3 years ago
Read 2 more answers
A customer works into a post office to purchase stamps. she purchases a total of 45 stamps. some of the stamps are 49cent stamps
baherus [9]

Step-by-step explanation:Let number of 49 cents =A

                                             Let number of 33 cents=B

<u>A+B=45    equation 1</u>

1 $=100 cents

49 cents =.49 dollar

33 cents=.33 dollar

so .<u>49A+.33B=17.89    equation 2</u>

Add equation 1 and equation 2

since these are simultaneous equations

.49A+.33B=17.89

     A+     B=45

so divide equation 2 by 100 we get

49A+33B=1789

    A+B     =45 multiply equation 1 by 33 on both the sides we get

<u>33A+33B=1485     equation 3</u>

so subtract equation 3 from equation 2 we get

49A+33B=1789  equation 2

<u>33A+33B=1485    equation 3</u>

<u>16A+0      =304</u>

16A=304

A=304/16

A=19

putting nalue of A in equation 1 we get

A+B=45

19+B=45

B=45-19

B=26

so number of 49 cent stamps are 19

and number of 33 cent stamps are 26

5 0
3 years ago
Jamie took 7 maths tests and got a score of 68,71,71,84,53,62 and 67 .What was Jamie's mode score?
Taya2010 [7]
The modal score would be 71. 71 appears the most in the list.
6 0
3 years ago
I need a step-by-step process of how to solve this I know the answer but I need to know exactly how to solve these kinds of ques
IgorLugansk [536]
So what we know from that is that angle is 30 degrees south of west. so you go 30 degrees down from west. How can we do this? well <span>basically what you have to do is to break down the force into x and y component. The y component of large force and the y component of small force should cancel so that the boat doesn't go north and south and the x components of both the forces should add up so that it goes west only.</span>
6 0
3 years ago
Calculate the GPA of a student with the following grades: B (77 hours), D (66 hours), F (2020 hours). Note that an A is equivale
d1i1m1o1n [39]

Answer:

The student's GPA is of 0.82.

Step-by-step explanation:

GPA:

To find the student's GPA, we find his weighed mean.

Grades:

7 hours worth 3(B)

6 hours worth 1(D)

20 hours worth 0(F). So

M = \frac{7*3 + 6*1 + 20*0}{7+6+20} = 0.82

The student's GPA is of 0.82.

8 0
3 years ago
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