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Jobisdone [24]
3 years ago
9

Which expression is equivalent to 13-(-21)

Mathematics
1 answer:
pantera1 [17]3 years ago
4 0

Answer:

34 my dear. :)))))))))

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A person standing on a moving walkway travels 80 feet in 40 seconds. What equation represents the relationship? How many feet wi
mars1129 [50]

Answer:

Option B. y = 2x; 20 feet

Step-by-step explanation:

1. Determination of the equation that represents the relationship.

Let y be the distance travelled.

Let x be the time taken.

Let K be the speed.

From the question given above, the following data were obtained:

Distance (y) = 80 ft

Time (x) = 40 s

Speed (k) =.?

Speed = Distance /time

K = y/x ......... (1)

K = 80/40

K = 2 ft/s

Substitute the value of k into equation 1

K = y/x

K = 2 ft/s

2 = y/x

Cross multiply

y = 2x

Therefore, the equation that represents the relationship is y = 2x

2. Determination of the distance travelled in 10 s.

Speed (k) = 2 ft/s

Time (x) = 10 s

Distance (y) =.?

y = 2x

y = 2 × 10

y = 20 ft

Therefore, the person will travel 20 feet in 10 seconds.

From the above calculations, the right answer to the question is

Option B. y = 2x; 20 feet

6 0
3 years ago
Simplify and state the excluded values:<br><br> 12x^3 - 12x/ 28x^3-56x^2+28x
Eddi Din [679]
<u>      12x³ - 12x      </u><u /> = 3/7 - 1/56x² - 3/7 = 3/7 - 3/7 - 1/56x² = -1/56x²
28x³ - 56x² + 28x
8 0
3 years ago
What would you get if you divided a half of a half of a half by a half of a fourth of a half?
BartSMP [9]
I think the question is 1/6 ÷ 1/6, which im pretty sure would be 1/3
4 0
3 years ago
Linear equations
saw5 [17]

Answer:

Ethan started of with 246,000 Twitter followers

Step-by-step explanation: 12,000 x 4 = 48,000

48,000 + 198,000 = 246,000


3 0
3 years ago
Find the value of x in the triangle shown below.<br> X =<br> 44°<br> xo<br> 29°
densk [106]

Answer:

x = 107°

Step-by-step explanation:

The sum of all 3 angles in any triangle needs to equal 180°.

This means that 44° + 29° + x = 180°

180° - 44° - 29° = 107°

4 0
2 years ago
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