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Yuri [45]
4 years ago
6

Write a two column proof. Given: 7y=8x-14 ; y=6 Prove: x=7

Mathematics
2 answers:
m_a_m_a [10]4 years ago
8 0
7y = 8x - 14

7y= 7(6) Reason : Given

7y = 42

8x -14 = 42 Reason: Because 8x - 14 equals to 7y


8x = 42 + 14 Reason : Because we flip 14 on to the other side of the equation thus it becomes opposute of what it was.

8x = 56

× = 7

Proven
ryzh [129]4 years ago
6 0

Given - 7y=8x-14 : y=6

Substitution Property - 7(6)=8x-14

Distributive Property - 8x-14=42

Addition Property - 8x=56

Division Property - x=7

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In a class of 10 there are 5students who play soccer. If the teacher chooses 2students, what is the probability that both of the
Mars2501 [29]

Answer and Step-by-step explanation:

Greetings!

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\frac{5}{10} =\frac{1}{2} ~If ~one ~student ~ are~ chosen, ~who ~plays~ soccer.

\frac{4}{9} ~If~ then ~the ~second ~student~ are~ chosen, ~who~ plays ~soccer

\frac{1}{2} \times \frac{4}{9} =\frac{2}{9}~ the~ probability ~that~ both~  students ~play~ soccer.

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4 0
3 years ago
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A granite monument has a volume of 25,365.4 cm3. The density of granite is 2.7 g/cm3. Use this information to calculate the mass
kiruha [24]
V = 25,364.4 cm^3              Is volume
r = 2.7g/cm^3                      Is density

To calculate mass you use formula:
m= V*r
To avoid remembering this formula you can see the type of unit on each given variable. We can see that we have g/cm^3 and cm^3. If we multiply them, we negate cm^3 and cm^3 and we are left with g which is unit for mass.

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3 years ago
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Math definitely isn't my greatest subject, if anyone knows how to do this and can explain it to me please help!
Law Incorporation [45]

Answer:

y-1 = 5/3(x-3)

Choice C

Step-by-step explanation:

slope = (y2-y1)/(x2-x1)

(3,1) (6,6)

m = (6-1)/(6-3)

m = (5/3)

the point slope form of a line is given by

y-y1 = m(x-x1)

You have point (3,1)

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8 0
3 years ago
Given that the circumferential of a circle is 22cm calculate its diameter​
Ipatiy [6.2K]

Answer:

diameter =7 cm

Step-by-step explanation:

circum=2pi×r

2\pi \times r

2×pi×r=22

2×22÷7×r=22

r=22×7÷44

r=7÷2

r=3.5

d=2×r=2×3.5=7

6 0
2 years ago
What is the best estimate for the length of a baseball bat?​
vredina [299]

Answer:

42 inches

By regulation it may be no more than 2.75 inches (7.0 cm) in diameter at the thickest part and no more than 42 inches (1.067 m) in length.

Step-by-step explanation:

baseball bat - is a smooth wooden or metal club used in the sport of baseball to hit the ball after it is thrown by the pitcher.

length- a measure of distance.

3 0
3 years ago
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