1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Murljashka [212]
3 years ago
13

At the beginning of the year, Wyatt had $40 in savings and saved an additional $14 each week thereafter. Julian started the year

with $20 and saved $19 every week. Let WW represent the amount of money Wyatt has saved tt weeks after the beginning of the year and let JJ represent the amount of money Julian has saved tt weeks after the beginning of the year. Write an equation for each situation, in terms of t,t, and determine the interval of time when Wyatt has more in savings than Julian.
Mathematics
1 answer:
Vitek1552 [10]3 years ago
3 0

Answer:

4 weeks

Step-by-step explanation:

Wyatt's equation:

t=14w+40

Julian's equation:

t=19j+20

Since both equations equal the same thing, or <em>t, we can equal them against each other as 1 equation</em>

14t+40=19t+20

(subtract 20 from both sides)

14t+20=19t

(subtract 14t from both sides)

20=5t

(divide both sides by 5)

t=4 weeks

You might be interested in
Use number line f to answer the questions.
Andre45 [30]

Answer:

r u in school

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
+) Colin is playing a video game. He wins 25 points for each gold coin he finds. His goal is to win
pychu [463]

Answer:

you need to find 8 gold bars

Step-by-step explanation:

8 0
3 years ago
A picture frame is 9 inches long and 6 inches wide. It can display a picture 6 inches long and 4 inches wide. What is the area o
irina1246 [14]

Answer:

30 inches squared

Step-by-step explanation:

First, find the area of the entire frame using length times height. 9*6 is 54 inches squared. Then, find the area of the middle space the same way. 6*4 is 24 inches squared. Lastly, subtract the middle from the entire frame's area. 54-24 is 30 inches squared.

4 0
3 years ago
A small lawnmower company produced 1,500 lawnmowers in 2008. In an effort to determine how maintenance-free these units were, th
ikadub [295]

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the average using the finite correction factor is:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}

The information provided is:

N=1500\\n=183\\\sigma=1.47\\\bar x=3.3

The critical value of <em>z</em> for 95% confidence level is,

<em>z</em> = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}

     =3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

7 0
3 years ago
2x^2+5x+3/x^2-3x-4 divided by 4x^2+2x-6/x^2-8x+16
Masja [62]

Answer: \frac{x-4}{2x-2}

Step-by-step explanation:

\frac{2x^2+5x+3}{x^2-3x-4} divided by \frac{4x^2+2x-6}{x^2-8x+16} is the same thing as multiplying \frac{2x^2+5x+3}{x^2-3x-4} by \frac{x^2-8x+16}{4x^2+2x-6}.

The equation we get is:

\frac{2x^2+5x+3}{x^2-3x-4}*\frac{x^2-8x+16}{4x^2+2x-6}

With this equation, we can factor each equation:

\frac{(x+1)(2x+3)}{(x+1)(x-4)} *\frac{(x-4)(x-4)}{2(x-1)(2x+3)}

We can cancel out like terms since they would be dividing each other:

\frac{x-4}{2x-2}

8 0
3 years ago
Other questions:
  • If the points A(x,2), B(-3, -4) and C(7, -5) are collinear, then find the value of x
    10·1 answer
  • what is a divers speed when he impacts the water from a cliff that is 128 feet high with an initial upward velocity of 32 feet/s
    14·1 answer
  • H(y)=9/5 • 2y at y=-2
    7·1 answer
  • 4. In the expression -9x-2 +7, what is the coeffcent of x?<br> A.-9<br> B.-2<br> C.7<br> D.9
    7·1 answer
  • Use the binomial theorem to expand (d-4b)^3 <br>Please explain.
    13·1 answer
  • Four dollars more than seven times Julie's amount of money.
    14·1 answer
  • Write in plain language: d / 5 *
    10·1 answer
  • Where does the graph of f(x)=2√-x+2 start?
    5·1 answer
  • Is -17/-40 equal to -0.425
    12·2 answers
  • Select the correct answer.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!