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ziro4ka [17]
3 years ago
8

The area of a triangle whose height is 1 more than 6 times its base is 13 square feet. If the base of the triangle is x feet, wh

ich equation models this situation?
A. 6x^2 +x-12=0

B. 6x^2+x-13=0

C. 6x^2+x-26=0

D. 36x^2+6x-26=0
Mathematics
1 answer:
brilliants [131]3 years ago
4 0
The correct answer is choice C.  Here is the reason.  If you substitute the information into the formula this is what it would be:
 A = bh/2
13 = x (6x + 1)/2
13 = (6x^2 + x)/2
26 = 6x^2 + x
0 = 6x^2 + x - 26
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The image of the bar chart is missing and so i have attached it.

Answer:

Bus = 75

Cycle = 20

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;

(6x + 4x)/2 = 50

Where x is the value of one unit. Thus;

10x/2 = 50

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x = 50/5

x = 10

Thus, a unit is 10

Under bus;

Boys have 7 units while girls have 8 units.

Thus;

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

Under cycle;

Boys have 1 unit while girls have 3 units.

Thus;

Frequency by cycle = ((1 × 10) + (3 × 10))/2 = 20

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Boys have 5 units while girls have 4 units.

Thus;

Frequency by cycle = ((5 × 10) + (4 × 10))/2 = 45

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3 years ago
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katrin2010 [14]
<h2 />

Step-by-step explanation:

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makkiz [27]
The answer is A
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Answer:

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Step-by-step explanation:

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