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mariarad [96]
2 years ago
5

Solve the following quadratic equation by rearranging and then factorising x^2 + 3x - 15 = 2x - 13

Mathematics
2 answers:
Whitepunk [10]2 years ago
8 0

Answer:

x = -2   & x = 1

Step-by-step explanation:

x^2 + 3x - 15 = 2x - 13 so you takeaway 2x and add 13 to the other side to get x^2 + x - 2 = 0

(x+2)(x-1) = 0 find factors of -2 that get you x

(x+2) = 0 so x = -2       (x-1) = 0  so x = 1

NNADVOKAT [17]2 years ago
7 0

Step-by-step explanation:

x² + 3x - 15 = 2x - 13

x² + x - 2 = 0

(x + 2)(x - 1) = 0

By zero product rule, (x + 2) = 0 or (x - 1) = 0.

Hence x = -2 or x = 1.

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3 years ago
Inscribed angles math lib <br> Need help with 9 and 10 thank you!!
telo118 [61]

Answer:

54° and 110°

Step-by-step explanation:

The opposite angles of a cyclic quadrilateral are supplementary, sum to 180°

(9)

19x - 26 + 7x - 2 = 180

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26x = 208 ( divide both sides by 26 )

x = 8

Then

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21x - 33 + 14x + 3 = 180

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35x = 210 ( divide both sides by 35 )

x = 6

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8 0
3 years ago
1. (5 pts). A coin is flipped 4 times.
Greeley [361]

Answer:

4/8 or 1/2

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6 0
3 years ago
Camille is working two summer jobs making $10 per hour
Rudik [331]

Answer:

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4 0
3 years ago
27 Which describes how the data for word 2 should be plotted on a coordinate grid? From the origin, go 2 units to the right and
mote1985 [20]

The statement which describes how the data should be plotted on a coordinate grid is: C. from the origin, go 9 units to the right and 12 units up.

<h3>What is a coordinate grid?</h3>

A coordinate grid can be defined as a two-dimensional plane which comprises a horizontal line (x-axis) and a vertical line (y-axis) that are perpendicular to one another.

For this coordinate grid, the number of letters in the data for word 2 should be plotted on the x-axis and the percentage of students who spelled the word correctly on the y-axis.

Based on the table, the number of letters for word 2 is equal to 9 while the percentage of students who spelt it correctly is 12.

In conclusion, to plot the data on a coordinate grid, from the origin, go 9 units to the right and 12 units up.

Read more on coordinate grid here: brainly.com/question/22235711

#SPJ1

<u>Complete Question:</u>

The table of values below shows data for a five-word spelling test. Number of Letters vs. Percentage who Spelled Correctly Word Number of letters in the word Percentage of students who spelled the word correctly. Which describes how the data for word 2 should be plotted on a coordinate grid?

5 0
2 years ago
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