Lisa is seven times as old as her brother. She will be four times as old as her brother in three years. Represent the above situation in mathematical form.
1)7x/3 = 4(x - 3)
2)7x – 3 = 4(x - 3)
3)7x + 3 = 4(x + 3)
4)None of the choices

Answers

Answer 1

Answer:

3

Step-by-step explanation:


Related Questions

find the value of 1.42 ​

Answers

Answer:

Right-tailed p-value: P(Z > z) = 0.0778038

Hopefully that's the answer you're looking for, I added a picture as well :)

37 POINTS PLEASE HELPPPPP!!!!!!

Answers

Solution:

We can see that each term when subtracted by 4, gives the next term.

This means that:

n₁ - 4(2) + 4(1) = n₂

Let's substitute the values to check:

=> n₁ - 4(2) + 4(1) = n₂ => n₁ - 8 + 4 = n₂ => n₁ - 4 = n₂ => 18 - 4 = 14=> 14 = 14 (Proved)

Now, we can find the nth term aₙ by using the formula:

18 - 4(nth term) + 4(1) = Value of nth term

To check that the formula is correct, let's substitute the value of nth as the fifth term of the sequence.

18 - 4(nth term) + 4(1) = Value of nth term=> 18 - 4(5) + 4(1) = Value of 5th term=> 18 - 4(5) + 4(1) = Value of 5th term=> 18 - 20 + 4 = Value of 5th term=> 18 - 16 = Value of 5th term=> 2 = Value of 5th term

Now, let's find the fifth term mentally. Keep subtracting 4 until you reach the fifth term.

=> 18 - 4 = Second term of sequence=> 14 = Second term of sequence=> 14 - 4 = Third term of sequence=> 10 = Third term of sequence=> 10 - 4 = Fourth term of sequence=> 6 = Fourth term of sequence=> 6 - 4 = Fifth term of sequence=> 2 = Fifth term of sequence

We are getting the same result from both ways.

In conclusion, our formula to find the nth term is "18 - 4(nth term) + 4(1)".

The flagpole in front of Silver Pines Elementary School is 18.375 feet tall. What is 18.375 rounded to the nearest tenth?

Answers

Answer:

18.4

Step-by-step explanation:

18.4

Explanation: 35 rounds up to 4 so it would be 18.4 pls mark brainliest

A recipe needs 1/2 cup of water for every 2 cups of sugar. If you plan to use 8 cups of sugar, how much water will you need?

Answers

Answer:

you need 2 cups of water. :)

Step-by-step explanation:

List the missing properties a, b, and c used when simplifying 1 2 ( 5 3 × 5 4 ) × 6 5 .

Answers

Answer:

A)distributive B)communitive C)associative

Step-by-step explanation:

Which value of I makes the equation 6 (0.52 – 1.5) + 20 =-9- (1 + 6) true? 0 - 14 O1 14​

Answers

-1 you are correct about that answer

which expressions correctly represent the decimal 57.036?

Answers

Answer:

57 + 0.036

good luck...

Charlie runs 7 miles in 80 minutes. At the same rate, how many miles would he run in 64 minutes?​

Answers

Answer:

5.6 miles

Step-by-step explanation:

Cross Multiplying to solve for x

     x = 7*64/80

     x = 5.6mi

Answer:

5.6 miles in 64 minutes

ASAP plz I need help

Answers

Answer: 30

Step-by-step explanation:

Plug in x for the expression

6^2 + x - x^2

36 + (3) - (3)^2

36 + 3 - 9

39 - 9

= 30

The average starting salary for this year's graduates of a large community college is $30,000 with a standard deviation of $8,000. Furthermore, it is known that the starting salaries are normally distributed. a. What is the probability that a randomly selected LU graduate will have a starting salary of at least $30,400? b. Individuals with starting salaries of less than $15,600 receive a low income tax break. What percentage of the graduates will receive the tax break? c. what are the minimum and the maximum starting salaries of the middle 95% of the LU graduates? d. If 303 of the recent graduates have salaries of at least $43,120, how many students graduated this year from this university?

Answers

Answer:

0.048 ; 0.03593 ; (14320, 45680) ; 6000

Step-by-step explanation:

Given a normal distribution :

Mean salary (m) = $30000

Standard deviation (s) = $8000

A.) probability of having a starting salary of atleast 30400

P(x ≥ 30400)

Obtain the standardized value (Z) :

Z = (x - m) / s

Z = (30400 - 30000) / 8000

Z = 400 / 8000 = 0.05

P(Z ≥ 0.05) = 0.48006 (Z probability calculator)

b. Individuals with starting salaries of less than $15,600 receive a low income tax break. What percentage of the graduates will receive the tax break?

P(X < 15600)

Obtain the standardized value (Z) :

Z = (x - m) / s

Z = (15600 - 30000) / 8000

Z = - 14400 / 8000 = - 1.8

P(Z < - 1.8) = 0.03593

c. what are the minimum and the maximum starting salaries of the middle 95% of the LU graduates?

Zscore which corresponds to 0.95 is 1.96

Minimum:

-1.96 = (x - 30000) / 8000

-15680 = x - 30000

x = 14320

Maximum :

1.96 = (x - 30000) / 8000

15680 = x - 30000

x = 45680

d. If 303 of the recent graduates have salaries of at least $43,120, how many students graduated this year from this university?

P(X ≥ 43120)

Z = (43120 - 30000) / 8000

Z = 13120 / 8000

Z = 1.64

P(Z ≥ 1.64) = 0.050503

Hence,

0.050503 = 303

1 = x

x = 303 / 0.05050

= 6000

What is the d stand for????

Answers

Answer:

The missing variable

Step-by-step explanation:

D=2

a sand box has the length that is 5 1/2 and a width that is 4 4/5 feet. what is the area of the sandbox?

Answers

Answer:

26 2/5 feet

Step-by-step explanation:

The perimeter of a rectangular field is 294 yards. If the length of the field is 92 yards, what is its width?

Answers

Answer:

w = 55 yards

Step-by-step explanation:

P = 2*(l + w)

P - perimeter, l - length, w - width

294 = 2*( 92 + w)

294/2 = 92 + w

147 = 92 + w

w = 147 - 92

w = 55

6th grade math I mark as brainliest

Answers

Answer:

D

Step-by-step explanation:

Write an equation of a line that passes through the point (-3, -5) and have a slope of -4/3

Answers

Answer:

y= -4/3x - 9

Step-by-step explanation:

Which answer choice represents the difference of 20 and 3 times a number?



A) 3j + 20

B) 20(3j)

C) 20 - 3j

D) (20 • 3)j

Answers

The answer is C) 20-3j

What do you already know about linear relationships?

Answers

Answer:

A linear relationship (or linear association) is a statistical term used to describe a straight-line relationship between two variables. Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b.

Can someone help me ASAP!!!

Answers

Answer:

3x+y=2

Step-by-step explanation:

Just remember that standard form is expressed as Ax+By=C. I also attached a picture to prove that 3x+y=2 is the standard form equation that makes up the line.

Hope this helps and answers your question :)

Which of these triangle pairs can be mapped to each other using a reflection
and a translation? Triangles LRK and ARQ are connected at point R.
Triangle L R K is reflected across point R to form triangle ARQ. Triangles LP
Kand QR A are shown. Triangle LPK is reflected across a line to form
triangle QRA. Triangle QR A is shifted to the right of triangle L P K. Triangles
LPK and QR A are shown. Triangle LPK is shifted down and to the left to
form triangle QRA. Triangles LP K and QR A are shown. Triangle LPK is
rotated to form triangle QRA. Triangle QR A is also shifted to the right.

Answers

Answer:

b

Step-by-step explanation:

b b b b b b b b b b b b b b b b b b b b  bb b b b b b b b b b b b b b b b b b

yes

Derek wants to buy a skateboard for $56.00. The store
is offering a discount of 5% on all items. What price will
Derek pay for the skateboard, not including tax?

Answers

Answer: 53.2$

Step-by-step explanation:

5/100 × 56 = 2.8

So, 56.00 $ - 2.8$ = 53.2$

What is the answer to 5 3x + 12- 6x = -9

Answers

Answer:

x=-21/47

Step-by-step explanation:

Answer:

[tex]x=7[/tex]

Step-by-step explanation:

Step-By-Step on how to solve it is in the attached picture below.

Hope this helps! :)

Jackie drinks a bottle of water and a bottle of orange juice every morning.

The bottle of water has 16.9 ounces. The bottle of orange juice has 15.2 ounces.

Which is the best estimate for the total amount Jackie drinks in the morning for an entire week

and gives a good explanation for that estimate?

Answers

Answer:

15.30

Step-by-step explanation:

use code tiko

Answer:

ayo what

Step-by-step explanation:

What is An equivalent fraction to 1/2 with a denominator as 10?

Answers

Answer:5/10

Step-by-step explanation:

1/2 x 5 = 5/10

5/10 hope this helps

I need the answer of this, can you tell me the answer plz ( i need the eleventh one )

Answers

Answer:

I believe the area will double

well the area is affected because it will be double the size that it originally was

area=16×24

A triangle has ∠1 and ∠2 as remote interior angles with respect to exterior angle ∠3. Given that m∠1 = 50 and m∠2 = 70, Alicia reasoned that m∠3 must be 60. Is Alicia correct? If not, explain Alicia's error.

Answers

Answer:

No, 60 is the third interior angle's mesure, not the exterior ∠3.

Step-by-step explanation:

Say that ∠1=∠A=50 and ∠2=∠B=70. The remote interior angles are the angles that are not touvhing the exterior angle. So ∠3 would be the the exterior angle to ∠C. ∠C=60 as the sum of the interior angles is 180.

The exterior angle is the angle formed by extending one of the triangle's sides. A straight line has the angle 180,  so∠3=180-∠C=180-60=120.

A plane is at Manchester, which is 170km north of Worcester. The plane flies in a straight line for 230km and lands in Cambridge, which is directly east of Worcester.

Show this information in a diagram.

Use your diagram to find the bearing of Manchester from Cambridge.

Answers

Answer:

ok so I found the answer, the plane has to go back to north

Step-by-step explanation:

Well first you have to remember the plane was supposed to go north

But then he crashed at East so he has to go back to North

        I hope this answered your question, Also for the diagram

        Um you can draw a quick picture that shows all of this information,

        So like, a triangle that shows where he needed to go and where he  

         went and in how many km it was from there to there.

             

              Im new so If this Did not help please get another person                  

The bearing of Manchester from Cambridge is 286 kilometers.

Given that a plane is at Manchester, which is 170km north of Worcester, and the plane flies in a straight line for 230km and lands in Cambridge, which is directly east of Worcester, to find the bearing of Manchester from Cambridge the following calculation must be done, applying the Pythagorean Theorem:

170² + 230² = X² √ (28,900 + 52,900) = X √81,800 = X 286 = X

Therefore, the bearing of Manchester from Cambridge is 286 kilometers.

Learn more in https://brainly.com/question/14930619

1. Mrs. Gribble went to the grocery store and spent $10.80 on pizzas, $4 on apples, and $29.99 on diapers. How much money did Mrs. Gribble spend? 2. Mrs. Bond had $100 to spend at the mall. She bought a shirt for $16.75 and a pair of shoes for $50.86. How much money does she have left? (two questions)

Answers

Answer:

1. Spent $44.79

2.She has $32.39 left

Step-by-step explanation:

What’s the unite rate

Answers

Answer:

unit rate is that which compares two unit.

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.61 and a standard deviation of 0.4. Using the empirical rule, what percentage of the students have grade point averages that are between 2.21 and 3.01?

Answers

Answer:

68%

Step-by-step explanation:

We start by calculating the z-scores of both

z-score = (x-mean)/SD

for 2.21

z-score = (2.21-2.61)/0.4 = -1

For 3.01

z-score = (3.01-2.61)/0.4 = 0.4/0.4 = 1

So what we want to find is the percentage between -1 SD and 1 SD of the mean

This is the percentage corresponding to the probability

P(-1 < x < 1)

According to the empirical rule, this is a value of;

68.269%

Which type of rock is shale?
A. Metamorphic
B. Extrusive igneous
C. Intrusive igneous
O D. Sedimentary
< PREVIOUS

Answers

Answer:

sedimentary

Step-by-step explanation:

Answer:

D. Sedimentary

Step-by-step explanation:

sedimentary

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