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prohojiy [21]
3 years ago
13

Can someone please help me???

Mathematics
2 answers:
Alecsey [184]3 years ago
5 0

Answer:

1 2 5

8

  4.

Step-by-step explanation:

The quotient is  0.125.

On the second line the 8 comes for 1 * 8.

On the last line the 4 comes for 8*5 = 40.

Snowcat [4.5K]3 years ago
4 0

Answer:

hope this helps! have a good day:)

Step-by-step explanation:

         1  2  5

_________

8 / 1 . 0 0 0

      - 8

______

        2 0

      - 1 6

_______

           4 0

         - 4 0

________

              0

       

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In a cave, a stalactite gets 44 millimeters longer each year. this year it is 72 centimeters long. how many years until it is 1
iragen [17]

Answer:

6.36 years (the .36 repeats), so rounded is 6.4.

Step-by-step explanation:

First, I'm going to convert all measurements to meters.

Since 1000 mm = 1 m, divide 44 by 1000.

44/1000 = 0.044 m

Since 100 cm = 1 m, divide 72 by 100.

72/100 = 0.72 m

Next, I'm going to setup an equation using y = mx + b.

b is the beginning amount which is 0.72.

m in the equation represents the rate which is 0.044.

y represents the total which is 1.

Plugin the numbers and solve for x.

1 = 0.044x + 0.72

1 - 0.72 = 0.044x + 0.72 - 0.72

0.28 = 0.044x

0.28/0.044 = 0.044x/0.044

6.36 = x

7 0
2 years ago
Can you answer 20-23 and please show work. Need on Thanks-giving or earlier.
Paha777 [63]
20. parallel lines will have the same slope, but different y intercepts
      In y = mx + b form, the slope is in the m position and the y intercept is        in the b position.
      So y = 3x + 4 and y = 3x + 6 are parallel lines

21. perpendicular lines will have negative reciprocal slopes.
      lets say u have a line..y = 2/3x + 4....the slope here is 2/3. To find the negative reciprocal, flip the slope and change the sign. So we have 2/3, flip the slope making it 3/2, change the sign making it -3/2. So ur perpendicular line will have a slope of -3/2.
so ur equations can be : y = 2/3x + 4 and y = -3/2x + 4

22. y = 2x + 5...slope here is 2. Parallel lines have the same slope.

y = mx + b
slope(m) = 2
(-3,1)...x = -3 and y = 1
sub and find b, the y int
1 = 2(-3) + b
1 = -6 + b
1 + 6 = b
7 = b
so this equation is : y = 2x + 7

23. 4x + 3y = (I cant see the last number..but we dont need it)
      3y = -4x + ?
      y = -4/3x + ?.....slope here is -4/3. A perpendicular line will have a negative reciprocal slope. So out perpendicular line will have a slope of 3/4.

y = mx + b
slope(m) = 3/4
(-8,-5)...x = -8 and y = -5
sub and find b, the y int
-5 = 3/4(-8) + b
-5 = - 6 + b
-5 + 6 = b
1 = b
so ur equation is : y = 3/4x + 1
5 0
3 years ago
Which is the best example of anticipating a potential accident in a science lab? A student skips the instructions because she ha
VikaD [51]

Answer: C

Step-by-step explanation:

i took the test

7 0
3 years ago
I WILL GIVE BRAINLIEST, 5 STARS AND THANKS!!! When an inequality models a practical problem, why might some of the points on the
kramer

Answer:

An inequality often covers an infinite area. Depending on the problem, any area either below or above the function is included in the set of solutions.

For example, see the attached photo.

y < x is graphed here.

When you substitute x = 0 into the function, y will equal 0 and this point is a solution to the problem. However, if any point under this line, such as (1, 0), (-9, 0), or even (1000000000, 0), was chosen, these are still solutions to the inequality, but not the problem.

Step-by-step explanation:

7 0
3 years ago
Jennifer is mowing the lawn. After 15 minutes, or 14 of an hour, Jennifer has mowed 23 of the lawn. At this rate, how long will
LUCKY_DIMON [66]

Answer:

22.5\:\text{minutes}

Step-by-step explanation:

In 15 minutes, Jennifer has mowed \frac{2}{3} of the lawn (given in problem). This means that it will take her \frac{3}{2}\cdot 15=22.5\:\text{minutes} to mow the entire lawn, assuming a constant rate.

Equation:

Let x represent the entire lawn:

\frac{2}{3}x=15,\\x=\frac{15}{\frac{2}{3}}=15\cdot \frac{3}{2}=\boxed{22.5}

3 0
3 years ago
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