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kvasek [131]
3 years ago
8

Portland, OR is 180 miles away from Seattle, WA. If it takes a driver 3 hours to drive from Portland to Seattle, what is the dri

ver's average rate of speed? ill mark brainliest please help this is my final grade
Mathematics
2 answers:
Lera25 [3.4K]3 years ago
7 0
The average rate of speed is total distance divided by total time. Therefore 180miles / 3 hours is 60mph.
AfilCa [17]3 years ago
5 0

Answer:

60km/h

Step-by-step explanation:

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Plz need help on 1. 2. and 3 plz help and dont answer if you dont know it plz
sesenic [268]

Answer:

1) 32m^{6}n^{14}

2) 3j^{4}k^{8}

3) 135a^{11}b^{16}

Step-by-step explanation:

to know: when multiplying terms with same base and exponents, multiply the bases and add the exponents

to know: when dividing terms with same base and exponents, divide the bases and subtract the exponents

to know: whenever exponents are contained within a set of parentheses and separated by another set of parentheses, multiply the exponents

1) (4^{4}· m^{12} · n^{20}) ÷ 2³m^{6}n^{6} = 3j^{4}k^{8}

2) (15j^{5}k^{2}· 25j²k^{9}) ÷ 5³j³k³ = (375j^{7}k^{11}) ÷ 125j³k³ = 3j^{4}k^{8}

3) (5 · 3³) a^{11}b^{16} = 135a^{11}b^{16}

5 0
3 years ago
Solve and reduce to lowest terms 4\7 x 5\8
erastovalidia [21]

Answer:

5/14

Step-by-step explanation:

4/7 x 5/8 = 20 /56

Then divide by 4

20/56 x 4/4 = 5 /14

8 0
2 years ago
Which digit is in the ten thousandths place in 4,6037?
Iteru [2.4K]

Answer:

7

Step-by-step explanation:

4- Ones

6- tenths

0-hundredths

3-thousandths

7-ten-thousandths

Hope this helps! :)

6 0
2 years ago
Prove the polynomial identity
Nataliya [291]

Answer:

The steps have been shown in the solution below

Step-by-step explanation:

(3x+1)^{2} - 2(3x+1)=(3x+1)(3x-1)

9x^{2} +6x+1 -6x-2= (3x+1) (3x-1)\\\\9x^{2} -1=(3x+1)(3x-1)\\\\(3x+1)(3x-1)=(3x+1)(3x-1)\\

LHS=RHS Hence, proved.

4 0
3 years ago
The perimeter of a rectangle is 64 units. Can the length x of the rectangle can be 20 units when its width y is 11 units?
vekshin1
B. No, the rectangle cannot have x = 20 and y = 11 because x + y ≠ 32

Perimeter = 2(l + w)
Perimeter = 64

Assuming: P = 64; w = 11 ; l = ?
64 = 2(l + 11)
64/2 = l + 11
32 - 11 = l
length = 21.


5 0
3 years ago
Read 2 more answers
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