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fredd [130]
3 years ago
13

Factor and solve X^2+7x-8=0

Mathematics
1 answer:
adelina 88 [10]3 years ago
4 0
(X^2+8x)-(x-8)=0
x(x+8)-1(x+8)=0
(X-1)(x+8)=0
X= 1
X= -8
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Given m&lt;12= 121 and m&lt;6= 75, find the measure of each missing angle.
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a. m<1 = m<6 (vertical angles)

m<1 = 75° (substitution)

b. m<12 = m<1 + m2 (alternate exterior angles)

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c. m<1 + m<2 + m<3 = 180° (angles on a straight line)

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m<3 = 59°

d. m<4 = m<3 (vertical angles)

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e. m<5 + m<4 + m<6 = 180° (angles on a straight line)

m<5 + 59° + 75° = 180° (substitution)

m<5 + 134° = 180°

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m<5 = 46°

f. m<7 = m<12 (vertical angles)

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g. m<8 = m<4 (vertical angles)

m<8 = 59° (substitution)

h. m<9 = m<6 (Alternate Interior Angles)

m<9 = 75° (substitution)

i. m<10 + m<9 = 180° (Linear Pair)

m<10 + 75° = 180° (substitution)

m<10 = 180° - 75° (Subtraction property of equality)

m<10 = 105°

j. m<11 = m<8 (vertical angles)

m<11 = 59° (substitution)

k. m<13 = m<10 (vertical angles)

m<13 = 105° (substitution)

l. m<14 = m<9 (vertical angles)

m<14 = 75° (substitution)

5 0
3 years ago
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