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2 years ago

What is 3k +2 ( 5k - 3) = 7

Mathematics

1 answer:

polet [3.4K]2 years ago

3 0

Answer:

k= -0.2

Step-by-step explanation:

3+2(5k-3)=7 (original)

3+10k-6=7 (distribute 2 in (5k-3))

9+10k=7 (combine like terms 3+-6)

10k=-2 (subtract 9 on both sides to isolate k)

k=-0.2 (divide 10 on both sides to get you're answer/isolate k)

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An angle measured 10 degrees less than the measure of its complementary angle. Find the measure of both angles

Mazyrski [523]

Answer:

The measure of the angles are 40 degrees and 50 degrees

Step-by-step explanation:

Let

x ----> the measure of one angle in degrees

y ----> the measure of the complementary angle in degrees

we know that

If two angles are complementary, then their sum is equal to 90 degrees

$x+y=90$ ----> equation A

we have that

$x=y-10$ ----> equation B

Substitute equation B in equation A and solve for y

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2 years ago

What’s the answer for part A?

jeka57 [31]

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2 years ago

I have asked so many times and no one will answer. :(

andrew-mc [135]

Answer:

1) $\frac{1}{2^7}$ ; 2) $11^7$

Step-by-step explanation:

1) Using the Power of a Fraction Rule $(\frac{a}{b} )^x = (\frac{a^x}{b^x} )$ ,

$(\frac{1}{2} )^7 = (\frac{1^7}{2^7} )$ , which can just be simplified to $\frac{1}{2^7}$ .

2) Using the Negative Exponent Rule, $a^{-x} = \frac{1}{a^{x}}$ ,

$(\frac{1}{11} )^{-7} = \frac{1}{\frac{1}{11^7}}$ , which can be simplified to $11^7$ .

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2 years ago