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Veronika [31]
3 years ago
7

Draw a number line that represents 7+(-4).

Mathematics
1 answer:
tekilochka [14]3 years ago
3 0
You start from negative 7 in number line and you go left 4
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If DF = 170, find the value of x. Then find DE and EF.<br> DE=3x + 20<br> EF=2x + 40
Julli [10]

9514 1404 393

Answer:

  DE = 86

  EF = 84

Step-by-step explanation:

We assume that point E lies on segment DF, so that ...

  DE + EF = DF

  (3x +20) +(2x +40) = 170

  5x = 110 . . . . . . . . . . . . . . . collect terms, subtract 60

  x = 22 . . . . . . . . . . . . divide by 5

  DE = 3×22 +20 = 66 +20 = 86

  EF = 2×22 +40 = 44 +40 = 84

7 0
2 years ago
(a) The probability that an automobile being filled with gasoline will also need an oil change is 0.35; the probability that it
cricket20 [7]

Answer:

0.714 ; 0.556 ; (A1 n A2 n A3) = 0

Step-by-step explanation:

Given that :

P(oil) = 0.35

P(filter) = 0.45

P(oil n filter) = 0.25

1)

P(filter | Oil) = P(oil n filter) / P(oil)

P(filter | Oil) = 0.25 / 0.35 = 0.714

11)

P(Oil | filter) = P(oil n filter) / P(filter)

P(Oil | filter ) = 0.25 / 0.45 = 0.556

Number of red aces = 2

Queen or king = 4 + 4 = 8

Number on card greater than 3 and less than 8 = {4,5,6,7} = 4 card ; for 4 suits = 4 * 4 = 16

Total number of cards in deck = 52

Choosing without replacement :

Hence,

A1 = 2 / 52

A2 = 8 / 51

A3 = 16 / 50

(A1 n A2 n A3) ;this means card common to all three events.

However, (A1 n A2 n A3) = 0 because ;

1.) No red ace card is greater than 3 and less than 8.

11.) An ace card can neither be a king nor a queen

3 0
2 years ago
Which fraction is equal to 1/5.<br> Can someone please answer this question
NeX [460]

Answer:

2/10

20/100

5/25

Step-by-step explanation:

I hope this helps you

4 0
2 years ago
Read 2 more answers
Write the equation of the line in fully simplified slope-intercept form.
Nastasia [14]

Answer:

y= \frac{5}{6} x + 4

Step-by-step explanation:

Pick two points: (-6,-10) and (0,4)

Then solve for m (slope): I picked (0,4)

m= \frac{4-(-1)}{0-(-6)} =\frac{5}{6}

Then put in slope intercept form:

4= \frac{5}{6} (0) + b

4=b

Then put in final form:

y= \frac{5}{6} x + 4

Hope this helps!

7 0
3 years ago
Question 7 of 10
solniwko [45]

Answer:

what may be true

Step-by-step explanation:

i just took the test and got the answer correct, i hope this helps.

5 0
2 years ago
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