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Schach [20]
3 years ago
15

Please help i need this done

Mathematics
1 answer:
Ann [662]3 years ago
3 0
3x - 2 = x + 1
2x = 3
x = 3/2
x = 1.5

3x - 2 = 3(1.5) - 2 = 2.5
or
x + 1 = 1.5 + 1 = 2.5

P = 4(2.5) = 10

perimeter of square is 10 cm so side of square = 2.5cm

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In an endurance race, Rachel ran
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Answer:

31\frac{1}{5}\ miles

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

so

The distance is equal to multiply the speed by the time

we have

speed=9\frac{3}{5}\ \frac{miles}{hour}

time=3\frac{1}{4}\ hours

distance=(9\frac{3}{5})(3\frac{1}{4})

Convert mixed number to an improper fraction

9\frac{3}{5}=9+\frac{3}{5}=\frac{9*5+3}{5}=\frac{48}{5}

3\frac{1}{4}=3+\frac{1}{4}=\frac{3*4+1}{4}=\frac{13}{4}

substitute

distance=(\frac{48}{5})(\frac{13}{4})=\frac{624}{20}=31,2\ miles

Convert to mixed number

31.2\ mi=31+0.2=31+\frac{1}{5}=31\frac{1}{5}\ miles

3 0
3 years ago
Does the image have rotational symmetry? If so, by how many degrees?
Goshia [24]

<em>☽------------❀-------------☾</em>

<em>Hi there!</em>

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4 0
3 years ago
Determine the intercepts of the line?
jeka94

Answer:

x-intercept: (-7.5 , 0)   y-intercept: (0 , 5.5)

Step-by-step explanation:

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ddd [48]

Answer:

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Step-by-step explanation:

9. -2x-7>1

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x>-4

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x≥1

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2(v+3)≥-2

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2v≥-8

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4-4k≥-16

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Step-by-step explanation:

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