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Rainbow [258]
2 years ago
9

What's two thirds plus six seventh?

Mathematics
2 answers:
vfiekz [6]2 years ago
7 0

Answer:

32/21

Step-by-step explanation:

multiply (2/3) by (7/7) and (6/7) by (3/3). (14/21) + (18/21) is (32/21)

erastova [34]2 years ago
3 0
The answer is 32/21.

2/3 = 0.666667
6/7 = 0.857143
0.666667 + 0.857143 = 1.523810
1.523810 = 32/21

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andrew rides his bike at a speed of 28 km per hour. he rides for one amd one quarter hours at this speed without stopping. How f
quester [9]

Answer:

Well.

Step-by-step explanation:

If its 28 km for hour. A quarter of 28 is 7 so then 28+7=35 km.

8 0
2 years ago
Read 2 more answers
I do not understand what number I am supposed to use for “y=4x+__. I thought it would be 6 because that’s how many hexagons are
skad [1K]
Based on the table, it should be 2.
Y=4x+2 works for all x and y values in the table.
8 0
3 years ago
The volume of a rectangular prism is b3 + 8b2 + 19b + 12 cubic units, and its height is b + 3 units. The area of the base of the
omeli [17]
Given:

The volume of the rectangular prism is 

b^{3}+8 b^{2} +19b+12,

the height is h=(b+3)

1. The volume of a rectangular prism is (base area)*height

also, notice that the volume is a third degree polynomial, the height is a 1st degree polynomial, so the base area must be a 2nd degree polynomial, whose coefficients we don't know yet.
Let this quadratic polynomial be (mb^{2}+nb+k)

 
2

b^{3}+8 b^{2} +19b+12=(mb^{2}+nb+k)*(b+3)


notice that  b^{3} is the product of the largest 2 terms: mb^{2} and b, so m must be 1

also, notice that 12 is the product of the constants, k and 3

so k*3=12, this means k=4

3
we write the above equality again:

b^{3}+8 b^{2} +19b+12=(b^{2}+nb+4)*(b+3)


(b^{2}+nb+4)(b+3)= b^{3}+3 b^{2} +nb^{2}+3nb+4b+12

== b^{3}+(n+3)b^{2}+(3n+4)b+12


4
now compare the coefficient with the left side:

8 b^{2}=(n+3)b^{2}

8=n+3

n=5


substituting n=5: 

the base area is b^{2}+5b+4

Answer: b^{2}+5b+4


3 0
3 years ago
SUB TO YFBG JAY ON YT ASAP RN
Elena L [17]

Answer:

ok on my way to do so!!!!!!

3 0
3 years ago
Need help asap!!!
antiseptic1488 [7]

Answer:

there is no solution

Step-by-step explanation:

y + 7 = 3x

6x - 2y = 6    which can be simplied to be 3x - y = 6  (divide by 2)

let y = 3x - 7

substitute:  3x -(3x - 7) = 6

                  3x - 3x + 7 = 6

                              7 ≠ 6  therefore, no solution

8 0
2 years ago
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