T + 3t - 7 = 4t - 7???

Answers

Answer 1
Answer: t+3t-7=4t-7\n\n4t-7=4t-7\ \ \ \ \ |subtract\ 4t\ from\ both\ sides\n\n-7=-7-TRUE\n\ninfinitely\ many\ solutions;\neach\ number\ is\ a\ root\ of\ the\ equation\n\nt\in\mathbb{R}
Answer 2
Answer: t+ 3t - 7 = 4t - 7\n-7=-7\nx\in\mathbb{R}

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In the year 1900, in the country Acirema, there were 100 Lawyers and 2 million people. Every 10 years, the number of Lawyers doubles, and the population increases by 2 million. Let t be the number of years after 1900. Thus t=3 corresponds to 1903. Find the equation involving t whose solution tells you in which year 20 percent of the population are Lawyers. DO NOT SOLVE OR BEGIN TO SOLVE THIS EQUATION..2=___________________?????
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What is the constant of proportionality in the equation StartFraction x over y EndFraction = StartFraction 2 over 9 EndFraction?StartFraction 2 over 9 EndFraction
2
StartFraction 9 over 2 EndFraction
9

I NEED HELP QUICK!

Answers

We have been given an equation (x)/(y)=(2)/(9). We are asked to find constant of proportionality from our given equation.

We know that two directly proportional equations are in form y=kx,where y is directly proportional to x and k is constant of proportionality.

Let us rewrite our given equation by cross multiplying as:

2y=9x

Now we will divide both sides of equation by 2.

(2y)/(2)=(9x)/(2)

y=(9)/(2)x

We can see that our equation is in form y=kx and constant of proportionality is (9)/(2).

Answer:

9

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2

Picture:

What percentage of coach passengers did not check bags? Round to the nearest tenth.

Answers

The percentage of coach passengers who did not check their bags will be 43.82 %.

What is Percentage?

percentage, a relative value indicating hundredth parts of any quantity.

It is given that the total number of passengers is, 162 of which 71 bags didn't check while 91 bags got checked.

We have to find the percentage of coach passengers who did not check their bags.

It is found by dividing the total number of passenger bags not checked by the total number of passengers.

=71 / 162 × 100

=43.82 %

The percentage of coach passengers who did not check their bags will be 43.82 %.

Hence, the percentage of coachpassengers who did not check their bags will be 43.82 %.

To learn more on Percentage click:

brainly.com/question/28269290

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The two-way table below displays information about passengers on a commercial flight.

Passenger Data

First Class

Coach

Checked Bags

10

81

Did Not Check Bags

14

57

What percentage of coach passengers did not check bags? Round to the nearest tenth.

35.2%

41.3%

70.4%

80.3%

To find the % of something simply turn your % to a decimal, then times it by the number you want for ex. .5 * 78 = 39

A contractor is pouring a concrete driveway. The perimeter is 108 ft. What length will the driveway be if the width is 14 ft.?. . The driveway is ____ feet long.

Answers

The Perimeter = 2 L + 2 W
108 = 2 L + 2 · 14
108 = 2 L + 28
2 L = 108 - 28
2 L = 80
L = 80 : 2
L = 40 ft
Answer: the driveway is 40 feet long.

Please help out i’m stuck please and thank you

Answers

Answer: y = (4/3)x + 2

======================================================

Explanation:

The given equation is y = (-3/4)x - 2. Comparing it to y = mx+b, the slope is m = -3/4

Flip the fraction and the sign to go from -3/4 to 4/3. This is the perpendicular slope. Multiplying the two slopes gets (-3/4)*(4/3) = -1.

Rule: the original slope and perpendicular slope always multiply to -1, assuming neither line is vertical or horizontal.

We'll use the point (x,y) = (3,6) and the perpendicular slope m = 4/3 to find the y intercept b

y = mx+b

6 = (4/3)(3) + b

6 = 4+b

6-4 = b

2 = b

b = 2

The y = mx+b equation becomes y = (4/3)x + 2 which is the slope intercept form of the perpendicular line.

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Extra info:

If you want to convert to standard form Ax+By = C, then you could do the following steps

y = (4/3)x + 2

3y = 4x + 6 ... multiply everything by 3 to clear out the fraction

3y - 4x = 6

-4x + 3y = 6

4x - 3y = -6 ... multiplying both sides by -1; this is to make A > 0

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The Smiths are sending out a batch of holiday cards. Emily signed of the cards. Then Josh signed of the remaining cards. Tatiana signed 20% of what Josh had left. If there were 75 cards in all, how many cards are left to be signed? There are cards yet to be signed.

Answers

The answer is 32

Emily signed 2/5 so 75 divided by 5 is 15

15x2 is 30

75-30=45

45 divided by 1/9 is 5

30+5=35

so then 45-5=40

20% of 40 is 8

30+5+8 = 43

75-43=32

Answer:

You will get 75 cards

Step-by-step explanation:

Nghiệm của phương trình sinx-cos2x=2

Answers

Answer:

Ki lekso?

Step-by-step explanation:

Kisu bujina