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
Marat540 [252]
2 years ago
13

In the system of equations below, which variable would it be easiest to solve for?

Mathematics
2 answers:
otez555 [7]2 years ago
8 0

Answer:

the correct answer would be a ,the easiest to solve for is x in the first equation.

Step-by-step explanation:

edge2021

Maru [420]2 years ago
7 0

Answer:

<h3>     The first: The easiest to solve for is x in the first equation.</h3>

Step-by-step explanation:

To get x from first equation  you just need to subtract 4y from both sides.

The rest of variables needs two operations to get variable - subtracting and then dividing.

You might be interested in
Lou has an account with $10,000 which pays 6% interest compounded annually. If to that account, Lou deposits $5,000 at the begin
katovenus [111]

Answer:

Option d. $22154 is the right answer.

Step-by-step explanation:

To solve this question we will use the formula A=P(1+\frac{r}{n})^{nt}

In this formula A = amount after time t

                        P = principal amount

                        r = rate of interest

                       n = number of times interest gets compounded in a year

                        t = time

Now Lou has principal amount on the starting of first year = 10000+5000 = $15000

So for one year A=15000(1+\frac{\frac{6}{100}}{1})^{1\times1}

= 15000(1+.06)^{1}

= 15000(1.06) = $15900

After one year Lou added $5000 in this amount and we have to calculate the final amount he got

Now principal amount becomes $15900 + $ 5000 = $20900

Then putting the values again in the formula

A=20900(1+\frac{\frac{6}{100}}{1})^{1\times1}

= 20900(1+.06)^{1}

= 20900(1.06)=22154

So the final amount will be $22154.

3 0
2 years ago
Nick bought apples at a farmers market where 5 apples cost $4.45.
ozzi

Step-by-step explanation:

5 a = $4.45

x1.4

7 apples = $6.23

1 apple = 0.89

9.79 / 0.89 = 11

11 apples

8 0
3 years ago
Read 2 more answers
. (0.5 point) We simulate the operations of a call center that opens from 8am to 6pm for 20 days. The daily average call waiting
SashulF [63]

Answer:

The 95% t-confidence interval for the difference in mean is approximately (-2.61, 1.16), therefore, there is not enough statistical evidence to show that there is a change in waiting time, therefore;

The change in the call waiting time is not statistically significant

Step-by-step explanation:

The given call waiting times are;

24.16, 20.17, 14.60, 19.79, 20.02, 14.60, 21.84, 21.45, 16.23, 19.60, 17.64, 16.53, 17.93, 22.81, 18.05, 16.36, 15.16, 19.24, 18.84, 20.77

19.81, 18.39, 24.34, 22.63, 20.20, 23.35, 16.21, 21.73, 17.18, 18.98, 19.35, 18.41, 20.57, 13.00, 17.25, 21.32, 23.29, 22.09, 12.88, 19.27

From the data we have;

The mean waiting time before the downsize, \overline x_1 = 18.7895

The mean waiting time before the downsize, s₁ = 2.705152

The sample size for the before the downsize, n₁ = 20

The mean waiting time after the downsize, \overline x_2 = 19.5125

The mean waiting time after the downsize, s₂ = 3.155945

The sample size for the after the downsize, n₂ = 20

The degrees of freedom, df = n₁ + n₂ - 2 = 20 + 20  - 2 = 38

df = 38

At 95% significance level, using a graphing calculator, we have; t_{\alpha /2} = ±2.026192

The t-confidence interval is given as follows;

\left (\bar{x}_{1}- \bar{x}_{2}  \right )\pm t_{\alpha /2}\sqrt{\dfrac{s_{1}^{2}}{n_{1}}+\dfrac{s_{2}^{2}}{n_{2}}}

Therefore;

\left (18.7895- 19.5152 \right )\pm 2.026192 \times \sqrt{\dfrac{2.705152^{2}}{20}+\dfrac{3.155945^2}{20}}

(18.7895 - 19.5125) - 2.026192*(2.705152²/20 + 3.155945²/20)^(0.5)

The 95% CI = -2.6063 < μ₂ - μ₁ < 1.16025996668

By approximation, we have;

The 95% CI = -2.61 < μ₂ - μ₁ < 1.16

Given that the 95% confidence interval ranges from a positive to a negative value, we are 95% sure that the confidence interval includes '0', therefore, there is sufficient evidence that there is no difference between the two means, and the change in call waiting time is not statistically significant.

6 0
2 years ago
Multiply using partial products . Record the products 56x 32
PSYCHO15rus [73]
56 X 32= 1,792 so that is how u do it hope u understand

3 0
3 years ago
Ellie is having a Birthday party and has invited 11 friends. She wants to order pizza for the party. Each pizza is cut into eigh
erik [133]

Answer:

Ellie will need to have 13 slices.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Part 1. Create two radical equations: one that has an extraneous solution, and one that does not have an extraneous solution. Us
    9·2 answers
  • What is m/9 - 1 = -2 whats the answer &amp; steps
    13·1 answer
  • Will give brainliest.
    15·2 answers
  • Which of the following expressions is equivalent to 3?
    9·1 answer
  • What is the range of g(x) = - 2x + 3, if the domain is {-2, - 1,0, 1, 2}?
    9·1 answer
  • Please, help me! 
    10·1 answer
  • When 4((0.5 x + 2.5 y minus 0.7 x minus 1.3 y + 4)) is simplified, what is the resulting expression?
    12·1 answer
  • Simplify the expression 53 + 3(5 − 3). 137 131 27 21
    8·1 answer
  • SOLVE THE SYSTEM USING SUBSTITUTION <br><br> HURRY ILL GIVE BRAINLIEST!!!!
    11·1 answer
  • there are 983 boys and 1059 girls in a school estimate the approximate number of students in the school​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!