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
xz_007 [3.2K]
3 years ago
5

Evaluate 7r - 7.5, for r = 5.6

Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

31.7

Step-by-step explanation:

7 · 5.6= 39.2

39.2 - 7.5= 31.7

irinina [24]3 years ago
8 0
Answer:31.7
Hope that this helps
You might be interested in
Mean birthweight is studied because low birthweight is an indicator of infant mortality. A study of babies in Norway published i
ANEK [815]

Answer: 20

Step-by-step explanation:

Formula to find the minimum sample size(n) when prior population standard deviation(\sigma) is known.

n=(\dfrac{z^c\times\sigma}{E})^2, where E = Margin of error , z^c= Critical z-value for c confidence interval.

Given : E = 225 g , \sigma=600 g

Critical z value for 90% confidence = 1.645

Now, n=(\dfrac{1.645\times600}{225})^2

n=(\dfrac{987}{225})^2

n=(4.38666666667)^2=19.2428444\approx20

Hence, the required minimum sample size = 20

7 0
3 years ago
Write a function that is passed in a positive integer, n, and sum up all the digits from 1 to n, doubling the even numbers. In o
olya-2409 [2.1K]

Answer:

Written in Python

def sums(n):

    total = 0

    for i in range(1,n+1):

         if i%2 == 0:

              total = total + i*2

         else:

              total = total + i

    return(total)

Step-by-step explanation:

The function is written in Python

def sums(n):

This initializes total to 0

    total = 0

This iterates through the integers that makes up n i.e. 1,2,3.....n

    for i in range(1,n+1):

This checks if current digit is even

         if i%2 == 0:

If yes, it adds the double of the digit

              total = total + i*2

         else:

If otherwise, it adds the digit

              total = total + i

This prints the calculated sum or total

    return(total)

To call the function from main, use the following:

print(sums(n))

Where n is a positive integer. i.e. n \geq 1

6 0
3 years ago
Graph the function and select the y-intercept<br> y = 2 • 3^x<br> a. 1<br> b. 2<br> c. 3<br> d. 4
kozerog [31]

Answer:

For the graph see attached image.

The y-intercept is 2

Step-by-step explanation:

The requested graph of the function is included in the attached image.

The y-intercept can be seen from the image, but also from finding the y-value when x= 0 (zero):

y=2\,\,\,3^x\\y=2\,\,\,3^0\\y = 2 \,\,\,(1)\\y = 2

8 0
3 years ago
Express the number 78.263 using ones, tenths, and thousandths.
ira [324]

The number 78.263 using ones, tenths, and thousandths means

  • 8 = ones
  • 2 = tenth
  • 3 = thousandths

<h3>Place value</h3>

This is the value of each digits based on its position in a number.

It is divided into whole number part and fractional part.

Whole number part:

  • Hundred thousand
  • Ten thousand
  • Thousand
  • Hundred
  • Tens
  • Ones

Fractional part:

  • Tenths
  • Hundredth
  • Thousandths
  • Ten thousandths
  • Hundred thousandths

78.263

  • 3 = thousandths
  • 6 = Hundredth
  • 2 = tenths
  • . = decimal point
  • 8 = Ones
  • 7 = tens

Learn more about place value:

brainly.com/question/2041524

#SPJ1

7 0
2 years ago
Given the following sequence, find the 12th term: {2, -4, 8,...} -4096 4096 2048 -2048
Nata [24]

Answer:

- 4096

Step-by-step explanation:

There is a common ratio between consecutive terms of the sequence.

r = - 4 ÷ 2 = 8 ÷ - 4 = - 2

This indicates the sequence is geometric with n th term

a_{n} = a r^{n-1}

where a is the first term and r the common ratio

Here a = 2 and r = - 2 , thus

a_{12} = 2 × (-2)^{11} = 2 × - 2048 = - 4096

4 0
3 years ago
Other questions:
  • What is six more than twice a number is 18 translated
    6·1 answer
  • Evaluateeeeeeeeeeeeeeeeeeee
    14·1 answer
  • If f(x) = 5x – 2 and g(x) = 2x+1, find (f+ g)(x).
    8·1 answer
  • Does √(x) + √(x) = √(2x)?<br><br><br>If not please explain.
    8·1 answer
  • What is 2/5 + 2/3 equal to
    5·2 answers
  • Please answer this correctly
    12·2 answers
  • Sofia makes an sells stuffed toys. She uses special fabric to cover a foam cube to make a letter block. How much fabric did Sofi
    8·2 answers
  • What is the quotient ?
    11·2 answers
  • Given that 3x – 4y= 22<br> -<br> Find &amp; when y = -7
    9·1 answer
  • This table gives a few (x,y)(x,y)left parenthesis, x, comma, y, right parenthesis pairs of a line in the coordinate plane. xxx y
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!