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k0ka [10]
2 years ago
9

Nina can braid 144 inches of rope in 3 hours find her unit rate round your answer to the nearest thousand

Mathematics
1 answer:
Alex777 [14]2 years ago
7 0

Answer:

48 inches

or

0.8 minutes

Step-by-step explanation:

To find the unit rate of inches per hour, divide 144 by 3.

144÷3=48

You don't need to round because there are no decimals.

To find the time to braid 1 inch, first multiply 3 by 60 (because there are 60 minutes in 1 hour).

3×60=180

Then divide 144 by 180.

144÷180= 0.8

You don't need to round because there are no thousandths.

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In the rectangle below, AE = 3x + 6, CE =6x-9, and mZEDA= 55°.<br> Find BE and m ZEAB.
tekilochka [14]

Answer:

BE = 21

m∠EAB = 45°

Step-by-step explanation:

The given dimensions in the rectangle are;

The length of AE = 3·x + 6

The length of CE = 6·x - 9

m∠EDA = 55°

From the properties of a rectangle, we have;

The diagonals of a rectangle bisect each other,

The lengths of the diagonals are equal

Therefore;

AC = BD

Diagonal BD bisects diagonal AC, therefore, AE = CE

Plugging in the values of AC and AE, we have;

3·x + 6 = 6·x - 9

∴ 6·x - 3·x = 6 + 9 = 15

3·x = 15

∴ x = 15/3 = 5

Therefore, we have;

AE = CE = 3·x + 6 = 3×5 + 6 = 21

AC = AE + CE = 21 + 21 = 42 = BD

BD = BE + DE and for rectangle ABCD, BE = DE

∴ BD = BE + BE = 2·BE = 42

∴ BE = 42/2 = 21

<em>BE = 21</em>

m∠EDA = m∠EAD = 55° by base angle of isosceles triangle ΔAED

m∠DAB = 90° = m∠EAD + m∠EAB

∴ m∠EAB = 90° - m∠EAD = 90° - 55° = 45°

<em>m∠EAB = 45°.</em>

7 0
2 years ago
12 plus the product of 2 and some number is equal to the product of 4 and some number minus 8 .
geniusboy [140]

Answer:

The number is 10

Step-by-step explanation:

Let x be the number

product is multiply

12 + (2x) = 4x -8

Subtract 2x from each side

12+2x-2x = 4x-2x-8

12 = 2x-8

Add 8 to each side

12+8 = 2x-8+8

20 = 2x

Divide by 2

20/2 = 2x/2

10 =x

4 0
3 years ago
Read 2 more answers
If it takes 2 scoops of flour to make 16 cookies how many scoops of flour does it take to make 40
lisov135 [29]

Answer:

5

Step-by-step explanation:

40 divided by 16 = 2.5

2*2.5=5

3 0
3 years ago
Read 2 more answers
Drag the expression into the boxes to correctly complete the table
bazaltina [42]

Answer:

2nd and 3rd are polynomials, rest arent

Step-by-step explanation:

Polynomial has to have no ||s, sqrts, or variables in denominator of fraction

3 0
2 years ago
Which of the following is NOT an arithmetic sequence?
Rashid [163]

Answer:

2, 4, 8, 16, 32

Step-by-step explanation:

4 0
2 years ago
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