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CaHeK987 [17]
3 years ago
8

Question: 7x^2 + 8x = x^2

Mathematics
2 answers:
7nadin3 [17]3 years ago
5 0

Answer:

x1= -4/3 and x2= 0

Step-by-step explanation:

Yanka [14]3 years ago
5 0
That answer is correct
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A car is driving at 40 kilometers per hour. How far, in meters, does it travel in 2 seconds?
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Changle. Show all work. Round each length to the nearest tenth and each angle to the
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Answer:

Part 1) BC=12.2\ units

Part 2) m\angle A=55^o

Part 3) m\angle C=35^o

Step-by-step explanation:

Part 1) Find AC

we know that

In the right triangle ABC of the figure

Applying the Pythagorean Theorem

AC^2=AB^2+BC^2

substitute the given values

AC^2=7^2+10^2

AC^2=149\\AC=12.2\ units

Part 2) Find the measure of angle A

we know that

In the right triangle ABC

tan(A)=\frac{BC}{AB} ----> by TOA (opposite side divided by the adjacent side)

substitute the values

tan(A)=\frac{10}{7}

using a calculator

m\angle A=tan^{-1}(\frac{10}{7})=55^o

Part 3) Find the measure of angle C

we know that

In the right triangle ABC

m\angle A+m\angle C=90^o ----> by complementary angles

substitute the given value

55^o+m\angle C=90^o

m\angle C=90^o-55^o=35^o

8 0
3 years ago
If there are 30 girls and 50 boys In a class how what is the greatest Conan factor ​
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Answer:The greatest common factor is 15 to 10.

Step-by-step explanation:

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Lane is 10 times Mels age.  If the difference in their age is 27, how old is Mel?
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3 years ago
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