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
andrew11 [14]
2 years ago
13

Stephen has $157.92 in his savings account. He deposited d more dollars into his account after receiving a gift from his grandmo

ther. Enter an equation that represents the total amount of money, t, Stephen now has in his savings account.
Mathematics
1 answer:
Sav [38]2 years ago
5 0

Answer:

157.92 + d =t

Step-by-step explanation:

You might be interested in
What's 2+2? I'm in 8th can't figure it out
Dmitriy789 [7]
It's 4 and u should know that by now.
8 0
3 years ago
Read 2 more answers
The amount of sales tax on a new car is directly proportional to the purchase price of the car. Victor bought a new car for $30,
Airida [17]

Answer:

Rita paid 47,500 dollars for the purchase price.

Step-by-step explanation:

We are given the sales tax on a new car is directly proportional to the purchase price of the car which means there is is something k such that

when you multiply it to the sales tax you get the purchase price.

Let's set this equation:

y=kx

Let y represent the purchase price and x the sales tax.

The second sentence tells us that (x,y)=(1500,30000).

We can plug this into y=kx to find the constant k.  (Constant means it stays the same no matter what the input and output is).

So we have:

30000=k(1500)

300    =k(15)      I went ahead and divided previous equation by 100.

Now divide both sides by 15:

300/15=k

Simplify:

20=k

So the equation to use the answer the question is

y=20x

where y is purchase price and x is sales tax.

So we want to know the purchase price on a car if the sales tax is 2375.

So replace x with 2375:

y=20(2375)

y=47500

3 0
3 years ago
Read 2 more answers
Which expression is equivalent to (2x + 7x*) - (5x² - 4x)?
Westkost [7]

Answer:

5x^2 + 13x

Step-by-step explanation:

3 0
2 years ago
17.9<br> find the two square roots of the number
allochka39001 [22]

Answer: 27.9 let me know if you need a another answer I hope this helps!

6 0
2 years ago
g A researcher wants to construct a 95% confidence interval for the proportion of children aged 8-10 living in Atlanta who own a
Helga [31]

Answer:

The sample size needed is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error of the interval is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Estimate the sample size needed if no estimate of p is available so that the confidence interval will have a margin of error of 0.02.

We have to find n, for which M = 0.02.

There is no estimate of p available, so we use \pi = 0.5

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.02\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.02}

(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.02})^{2}

n = 2401

The sample size needed is 2401.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The vertex of this parabola is at (-1, -3). Which of the following could be its equation? the parabola is going left.
    9·1 answer
  • Find the explicit rule for arithmetic sequence 13, 23, 33, 43
    7·2 answers
  • Which is the value of 8 in 0.837
    14·2 answers
  • I need help with this for #22 a., b., and c.
    6·1 answer
  • F(x)=x^2-3 domain and range
    12·1 answer
  • emily bought 3 vases of flowers.the most expensive vase of flowers was 12.00 and least expensive was 8.00 which is a reasonable
    14·1 answer
  • A department store buys shirts at a cost of ​$ and sells them at a selling price of ​$ each. Find the percent markup.
    10·2 answers
  • A triangle has an area of 72 square feet. The height is 12 feet. What is the length of the base (in feet)?
    13·1 answer
  • Kareen correctly answered 85% of the questions on his math test. If he answered 34
    11·1 answer
  • Which point identifies the intersection of two lines with slopes that multiply to −1?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!