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
Vika [28.1K]
3 years ago
6

Write three different equations that match the tape diagram.

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

19+7x=40

40-19=7x

40-7x=19

You might be interested in
Use the work shown below to write the equation for a line that passes through the points (−5, 0) and (−1, −8).
Dennis_Churaev [7]

Answer:

M = -2

b = -10

Step-by-step explanation:

First we need to find the slope

m = (y2-y1)/(x2-x1)

m = (-8 -0)/(-1- -5)

   = (-8-0)/(-1+5)

    = -8/4

    = -2

We now want to find the y intercept

y = mx+b is the slope intercept form of the equation

y = -2x+b

Using the point (-5,0)

0 = -2(-5) +b

0 = 10+b

Subtract 10 from each side

-10 = 10-10+b

-10 =b

The y intercept is -10

y= -2x-10

7 0
3 years ago
Read 2 more answers
I'm having trouble with this, it's geometry. please help and break it down if you can​
Travka [436]

Check the picture below.

5 0
3 years ago
Calculate the sample mean and sample variance for the following frequency distribution of heart rates for a sample of American a
spin [16.1K]

Answer:

Mean = 68.9

s^2 =18.1 --- Variance

Step-by-step explanation:

Given

\begin{array}{cccccc}{Class} & {51-58} & {59-66} & {67-74} & {75-82} & {83-90} \ \\ {Frequency} & {6} & {3} & {11} & {13} & {4} \ \end{array}

Solving (a): Calculate the mean.

The given data is a grouped data. So, first we calculate the class midpoint (x)

For 51 - 58.

x = \frac{1}{2}(51+58) = \frac{1}{2}(109) = 54.5

For 59 - 66

x = \frac{1}{2}(59+66) = \frac{1}{2}(125) = 62.5

For 67 - 74

x = \frac{1}{2}(67+74) = \frac{1}{2}(141) = 70.5

For 75 - 82

x = \frac{1}{2}(75+82) = \frac{1}{2}(157) = 78.5

For 83 - 90

x = \frac{1}{2}(83+90) = \frac{1}{2}(173) = 86.5

So, the table becomes:

\begin{array}{cccccc}{x} & {54.5} & {62.5} & {70.5} & {78.5} & {86.5} \ \\ {Frequency} & {6} & {3} & {11} & {13} & {4} \ \end{array}

The mean is then calculated as:

Mean = \frac{\sum fx}{\sum f}

Mean = \frac{54.5*4+62.5*3+70.5*11+78.5*13+86.5*4}{6+3+11+13+4}

Mean = \frac{2547.5}{37}

Mean = 68.9 -- approximated

Solving (b): The sample variance:

This is calculated as:

s^2 =\frac{\sum (x - \overline x)^2}{\sum f - 1}

So, we have:

s^2 =\frac{(54.5-68.9)^2+(62.5-68.9)^2+(70.5-68.9)^2+(78.5-68.9)^2+(86.5-68.9)^2}{37 - 1}

s^2 =\frac{652.8}{36}

s^2 =18.1 -- approximated

5 0
2 years ago
Help me with this plz
patriot [66]

Answer:

zero

Step-by-step explanation:

3 0
3 years ago
1. Jordan's washing machine is broken. Since her machine is pretty old, she doesn't want to spend more than $100
ahrayia [7]

Answer:

I think it would be D

Step-by-step explanation:

20 x 3 =  60      60+35= 95          20/4 = 5  

4 0
3 years ago
Read 2 more answers
Other questions:
  • Compare 0.3 and 0.8 using >,=,or <. Draw a model or number line to support your solutions
    13·1 answer
  • Among all pairs of numbers (x,y)such that 6x+2y=36 find the pair for which the sum of squares, x^2+y^2 is minimum.
    11·1 answer
  • $0.72 times what equals 7.5%
    9·1 answer
  • Find the zeros of r(x) = 8x2 + 4x +5.
    10·1 answer
  • What is 52.738 rounded to the nearest whole number
    13·1 answer
  • Pls help me 19 POINTS
    6·2 answers
  • Ted wanted to determine if one brand of paper towels​ (Brand A) was stronger than another brand​ (Brand B). He performed a study
    7·1 answer
  • Given that, 1 Chinese yuan = £0.09, convert £185 into Chinese yuan. Give your answer to the nearest yuan.
    12·1 answer
  • Is square root of 11 a irrational number
    15·2 answers
  • What two numbers that i multiply and get 18, then add and get 1
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!