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
svlad2 [7]
2 years ago
9

7x +9y for x=-3 and y=2

Mathematics
1 answer:
Rama09 [41]2 years ago
5 0

7x + 9y, \: where \: x =  - 3, \: and \: y = 2 \\

Plugging in our values,

7( - 3) + 9(2)

Evaluating our values,

- 21 + 18 =  - 3

You might be interested in
Wich number does not represent a whole number
erica [24]
C. 20/4 because a fraction isn’t a whole number.
7 0
3 years ago
Express the confidence interval 0.555 less than 0.777 in the form Modifying above p with caret plus or minus Upper E.
Elina [12.6K]

Complete Question

Express the confidence interval 0.555 less than p less than  0.777 in the form Modifying above p with caret plus or minus Upper E.

Answer:

The modified representation is \r p \pm  E  = 0.666 \pm  0.111

Step-by-step explanation:

From the question we are told that

    The  confidence interval interval is  0.555 <  p <  0.777

Now looking at the values that make up  the up confidence interval we see that this is a symmetric  confidence interval(This because the interval covers 95%  of the area under the normal curve which mean that the probability of a value falling outside the interval is 0.05 which is divided into two , the first half on the left -tail and the second half on the right tail  as shown on the figure in the first uploaded image(reference - Yale University ) ) which means

     Now  since the confidence interval is  symmetric , we can obtain the sample proportion as follows

             \r p  =  \frac{0.555 + 0.777}{2}

            \r p  =0.666

Generally the margin of error is mathematically represented as

            E  =  \frac{1}{2}  *  K

Where  K is the length of the confidence interval which iis mathematically represented as

           K  =  0.777 -0.555

         K  = 0.222

Hence  

          ME  =  \frac{1}{2}  *  0.222

           ME  =  0.111

So the confidence interval can now be represented as

        \r p \pm  E  = 0.666 \pm  0.111

     

3 0
3 years ago
The equation of a circle is given below. Identify the center and radius. Then graph the circle.
Blizzard [7]

Answer:

  • Center = (3, 0)
  • Radius = 3
  • Graph = see below

Concept:

Here, we need to know the idea of the circle equation.

Circle equation: (x - h)² + (y - k)² = r²

(h, k) = center

r = radius

x = variable

y = variable

Solve:

<u>Given expression </u>

(x - 3)² + y² = 9

<u>Find the point of the center</u>

(h, k) = \boxed{(3,0)}

<u>Find the length of the radius</u>

r² = 9

\boxed{r=3}

Hope this helps!! :)

Please let me know if you have any questions

3 0
2 years ago
Read 2 more answers
Please response ASAP!<br><br> 2+3=<br> 9+2=<br> 0+1=<br> 7+4=
Stolb23 [73]

2+3=5

9+2=11

0+1=1

7+4=11

3 0
3 years ago
Read 2 more answers
Gloria, Teresa, and Rebecca went to an office supply store. Gloria bought 8 pencils, 4 markers, and 6 erasers. Her total was
Korvikt [17]
The answer is $20.00
3 0
2 years ago
Other questions:
  • Throughout the 2016 Presidential election primaries, Millennials (those aged 20 t 36 years) consistently supported Senator Berni
    8·1 answer
  • A regular heptagon has sides measuring 26mm and is divided into 7 congruent triangles. Each triangle has a height of 27mm. What
    12·1 answer
  • Can someone help me correct this
    14·1 answer
  • What is 1/10 of 0.03 ?
    6·2 answers
  • Based on past experience, a bank believes that 6% of the people who receive loans will not make payments on time. The bank has r
    6·1 answer
  • Go listen to 1k phew (you'll thank me later)
    13·2 answers
  • Harry drives 6 miles north while Selma drives 8 miles east. How far apart are Harry and Selma when they stop?
    15·1 answer
  • 15 Select one: A. f(x)=−4x+12 B. f(x)=3x+2 C. f(x)=x−9 D. f(x)=−5x−1
    15·1 answer
  • 4y + 4x = -28 and<br> x = 2y - 4
    14·2 answers
  • Taylor and her children went into a movie theater and she bought $81 worth of bags of popcorn and candies. Each bag of popcorn c
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!