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3 years ago

2log7-2r=0 with the 7 being a subscript(small)

Mathematics

1 answer:

saw5 [17]3 years ago

5 0

Starting equation is 2log7(−2r)=0

First we can divide both sides by 2

log7(−2r)=0

Now we have to write the right side (0) as a logarythm.
Since 70=1, we can write 0 as log71, so the equation becomes:

log7(−2r)=log71

We can skip log signs because both sides are logarythms and the base is the same:

−2r=1

Now if we divide the equation by (-2) we get the answer:

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If a triangular road sign has a center height of

Paladinen [302]

Answer:

Formula

A = 1/2 b * h

Substitute

Area = 60 in^2

b = x

h = 2x - 1

60= 1/2 * x * (2x - 1)

Solve

60 = 1/2 * x (2x - 1) Multiply by 2

60 * 2 = x(2x - 1)

120 = x (2x - 1) Remove the brackets.

120 = 2x^2 - x Subtract 120 from both sides.

2x^2 - x - 120 = 0 This factors.

(2x + 15)(x - 8) = 0

Solve for x

2x + 15 = 0

2x = - 15

x = -15/2

x = - 7.5 a negative measurement is useless. Discard this answer.

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x = 8

Area (Check)

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Answer

Use Area = 1/2 * b * h to find the base and the height.Step-by-step explanation:

3 0

3 years ago

Trust Fund A deposit of $10,000 is made in a trust fund that pays 7% interest,compounded continuously.it is specified that the b

kvasek [131]

Answer:

After 50 years college will receive a amount of $294570.25

Step-by-step explanation:

We have given deposited amount P = $10000

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Time is given t = 50 years

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Amount is given by

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So after 50 years college will receive a amount of $294570.25

3 0

3 years ago

Can someone help me solve the inequality-2x+4>8 with the steps? Thanks

stellarik [79]

$\huge\text{Hey there!}$

$\rm{-2x + 4 > 8}$

$\large\textsf{SUBTRACT 4 to BOTH SIDES}$

$\rm{-2x + 4 - 4 > 8 - 4}$

$\large\textsf{CANCEL puts 4 - 4 because that gives you 0}$

$\large\textsf{KEEP: 8 - 4 because that helps solve for the x-value}$

$\rm{8 - 4 = \boxed{\bf 4}}$

$\rm{NEW\ EQUATION: -2x > 4}$

$\large\textsf{DIVIDE -2 to BOTH SIDES}$

$\mathsf{\dfrac{-2}{-2}>\dfrac{4}{-2}}$

$\mathsf{CANCEL\ out: \dfrac{-2}{-2}\ because\ that\ gives\ you\ 1}$

$\mathsf{KEEP: \dfrac{4}{-2} \ because \ it \ helps \you \ compare\ to \ the \ x-value }$

$\mathsf{\dfrac{4}{-2} = \boxed{\bf -2}}$

$\rm{\bold{x < -2 }}$

$\rm{It\ is \ an\ O PENED \ circle \ shaded \ to \ the \ left \ side \ of \ the \ number \ line}$

$\boxed{\boxed{\large\textsf{Answer: } \mathsf{\bf x < -2}}}\huge\checkmark$

$\large\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{Amphitrite1040:)}$

8 0

3 years ago

I don’t understand this. Can someone help me?

Aleksandr [31]

Answer: Mark me brainliest..

Step-by-step explanation: and imma put the answer inside the comments if you do so. youve got nothing to lose! :D

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3 years ago

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PSYCHO15rus [73]

Good job oh my God you are so smart oh my God a good job bro

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3 years ago