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Nataly [62]
3 years ago
15

X2 + 12x = – 20 what are the roots of the following quadratic equation

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
5 0

Answer:

x = -2

x = -10

Step-by-step explanation:

<u>Step 1 :</u><u> Rearrange</u>

x² + 12x + 20 = 0

<u>Step 2:</u><u> Factorise</u>

(x + 2)(x + 10)

<u>Step 3:</u><u> Find the roots / values of x</u>

Make each bracket equal zero.

(x + 2) = x = -2

(x + 10) = x = -10

Hope this helps!

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In the figure, m&lt;2 = 83, and m&lt;21 = 68. Find the measure of each angle
zhuklara [117]

Answer:

m<1 = 97

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m<4 = 68

m<5 = 112

m<6 = 68

m<7 = 97

m<8 = 83

m<9 = 97

m<10 = 83

m<11 = 112

m<12 = 68

m<13 = 112

m<14 = 68

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Step-by-step explanation:

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Mars2501 [29]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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PSYCHO15rus [73]

Answer:

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Step-by-step explanation:

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3 years ago
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dmitriy555 [2]

Answer:

A) slope = 20.

B)  The slope of 20 dollars per hour means that for every hour, the price of the service call increases by 20 dollars (or you could say the price of the service call is 20 dollars every hour, both work.)

Step-by-step explanation:

Recall that slope is y2 - y1 / x2 - x1.

Excellent. We are provided with two points: (1, 60) and (3, 100). Let’s enter this into our formula.

Slope = (100 - 60) / (3 - 1) = 40 / 2 = 20.

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This can be restated as: The slope of 20 dollars per hour means that for every hour, the price of the service call increases by 20 dollars (or you could say the price of the service call is 20 dollars every hour, both work.)

Hope this helps!

7 0
3 years ago
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