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
stich3 [128]
2 years ago
15

Adiya said that the first step to solving the quadratic equation x2 + 6 = 20x by completing the square was to divide 6 by 2, squ

are that value, and add the result to both sides. Is Adiya’s solution method correct? Explain.
Mathematics
2 answers:
tekilochka [14]2 years ago
7 0

Answer:

Step-by-step explanation:

Adiya’s method is not correct. To form a perfect square trinomial, the constant must be isolated on one side of the equation. Also, the coefficient of the term with an exponent of 1 on the variable is used to find the constant in the perfect square trinomial. Adiya should first get the 20x term on the same side of the equation as x2. Then she would divide 20 by 2, square it, and add 100 to both sides.  Hope it helps!

kicyunya [14]2 years ago
6 0
Adiya’s method is not correct. To form a perfect square trinomial, the constant must be isolated on one side of the equation. Also, the coefficient of the term with an exponent of 1 on the variable is used to find the constant in the perfect square trinomial. Adiya should first get the 20x term on the same side of the equation as x2. Then she would divide 20 by 2, square it, and add 100 to both sides. 
You might be interested in
Larry gets $7 for each of the 3 flower beds he weeds and Y dollars to edge a yard. Zach will get $25 to clean a garage and Y dol
lbvjy [14]

Answer:

Expression for Larry will be;

\$21 + \$Y\geq \$X

Expression for Zach will be;

\$25 + \$Y\geq \$X

Step-by-step explanation:

Given:

Larry gets $7 for each of the 3 flower beds he weeds and Y dollars to edge a yard.

Amount for each flower bed he weeds = $7

Number of flower bed he weeds = 3

Total amount he gets for 3 flower bed he weeds = \$7\times 3 =\$21

Amount earn to edge a yard = Y

Total amount Larry will earn = $21 + $Y

Now Zach will get $25 to clean a garage and Y dollars to wash a car.

Amount earned to clean garage = $25

Amount earned to wash as car = $Y

Total Amount Zach will earn = $25 + $Y

The Both have to make X dollars to meet their goals.

Expression for Larry will be;

\$21 + \$Y\geq \$X

Expression for Zach will be;

\$25 + \$Y\geq \$X

7 0
3 years ago
A pound of rice crackers costs $2.88. Matthew purchased 1/4 pound of crackers. How much did he pay for crackers?
Rom4ik [11]
He payed 0.72 
First you take 2.88, then you multiply it by 1/4 or a simpler way would be to divide 2.88 by 4. The answer is $0.72
6 0
3 years ago
Read 2 more answers
Semeet uses 0.4 gallon of gasoline each hour moving lawns. how much gas does she use in 4.2 hours
laiz [17]

Answer:

I think the answer is 1 gallon of gas

Step-by-step explanation:

8 0
2 years ago
Solve.
lions [1.4K]

Answer:

b=9,a=12

Step-by-step explanation:

I solved by substitution:

b = 3/4a  ---> plug this into the other equation

a + b = 21   is now    a + 3/4a = 21

Reduce: 7/4a = 21

a = 12

Now solve for b:

b=3/4a is now b=3/4(12)

b=9

6 0
3 years ago
Read 2 more answers
Is the confidence interval affected by the fact that the data appear to be from a population that is not normally​ distributed?
sp2606 [1]

Answer:

D. No, because the sample size is large enough.

Step-by-step explanation:

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

If the sample size is higher than 30, on this case the answer would be:

D. No, because the sample size is large enough.

And the reason is given by The Central Limit Theorem since states if the individual distribution is normal then the sampling distribution for the sample mean is also normal.

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

If the sample size it's not large enough n<30, on that case the distribution would be not normal.

7 0
3 years ago
Other questions:
  • 8,669 - (4,398 + 571) is this an equation
    11·1 answer
  • In the activity graph below, where time is measured in hours, what is the minimum time to finish the project?
    10·1 answer
  • At the zoo,there were 3times as many monkeys as lions.Tom counted a total of 24 monkeys and lions.How many monkeys were there?
    12·2 answers
  • A hyperbola has its center at (0,0)a vertex of (0,19) and an asymptote of y=19/16^x Find the equation that describes the hyperbo
    14·1 answer
  • Simplify the radical: √80
    9·2 answers
  • Can someone help me on the steps for this?
    7·1 answer
  • Help me somebody plssss
    14·1 answer
  • A gardener has 3 pounds of compost. She will split the compost into 8 garden beds equally. How many pounds of compost will she p
    5·1 answer
  • Ed wants to buy a car for $17,500. His Credit union approves him for a car loan with a 6.8% APR as long as you puts 20% down. He
    5·1 answer
  • A cube has a surface area of 54 square centimeters.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!