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SCORPION-xisa [38]
2 years ago
14

!NEED HELP URGENTLY! p − 10p + -5p + 14p − -9p − 2 = -20

Mathematics
1 answer:
bekas [8.4K]2 years ago
7 0

Answer:

p = -2

Step-by-step explanation:

p − 10p + -5p + 14p − -9p − 2 = -20

-9p + 9p + 9p = -20 + 2

9p = -18

p = -2

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Answer:

71.25%.

Step-by-step explanation:

To find the average, we can simply add up the percentages and divide by how many there are.

We can do this by:

\frac{81 + 90 + 80 + 34}{4} = 71.25%

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the dual bar chart below shows how a group of 190 students travel to school. given that 50 students, said they travel to school
Whitepunk [10]

The image of the bar chart is missing and so i have attached it.

Answer:

Bus = 75

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Walk = 45

Step-by-step explanation:

We are told that 50 students said they travel to school by car.

However, in the bar chart, we see that we have a portion for boys and girls

Under car, when we count along the y-axis, we will see that, there are 6 units for boys and 4 units for girls.

Thus, to find the value of a unit since number of people that took cars is 50, we have;

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Frequency by bus = ((7 × 10) + (8 × 10))/2 = 150/2 = 75

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Thus;

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5 0
3 years ago
A baseball player swings and hits a pop fly straight up in air to the catcher. the height of the baseball in meters t seconds af
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h(t)=-4.9t^{2}+34.3t+1
\\h'(t)=(-4.9t^{2}+34.3t+1)'=-9.8t+34.3
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\\
\\t= \frac{34.3}{9.8} =3.5
\\
\\h_{max}=h(3.5)=-4.9\times3.5^{2}+34.3\times3.5+1=61.025

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