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guajiro [1.7K]
3 years ago
11

The temperature at 7:00 a.m. was –5°F. By 4:00 p.m., the temperature had risen 9 degrees and by 10:00 p.m. the temperature dropp

ed 11 degrees. What was the temperature at 10:00 pm
Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

-7 degrees

Step-by-step explanation:

-5+9-11=-7

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Which is an equation of the line that is perpendicular to 3x+y=-5 and passes through the point (3, -7)?
nataly862011 [7]

Answer:

y+7=1/3(x-3) in point slope

y=1/3x-8 in slope intercept form

Step-by-step explanation:

First put 3x+y=5 in slope-intercept form (y=mx+b)

y=-3x+5

Give that the slope is -3 the perpendicular slope would be 1/3

now using the points (3.-7)

y+7=1/3(x-3) in point slope

y=1/3x-8 in slope intercept form

7 0
3 years ago
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A snail going full speed was taking 1/5 of a minute to move
cluponka [151]

Answer:

84 seconds or 1 min and 24 seconds

Step-by-step explanati

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3 years ago
The graph shows the dilation of ΔABC with the origin as its center. Which rule describes this transformation? A) (x, y) → (2x, 2
podryga [215]

<u><em>Note: Since, you have not added the graph. So, I will give you a general overview of the concept of dilation, the understanding of which will make you clear your concept.</em></u>

Step-by-step explanation:

We know that a dilation is the kind of transformation which produces an image which has the same shape as the original object, but having a different size.

Here are some key factors regarding dilation:

  • Enlargement occurs when a dilation does create a larger image.
  • Reduction occurs when a dilation does create a smaller image.
  • A dilation shrinks or stretches the original object.
  • If the scale factor > 1, the image will be a stretch (enlargement)
  • If the scale factor is between 0 and 1, the image will be shrunk (reduction)
  • If the scale factor = 1, the original object and the image will be congruent

Here is the impact of dilation when (x, y) → (2x, 2y):

  • Dilation with scale factor 2, will have the rule as (x, y) → (2x, 2y). The image will be a stretch (enlargement) as the scale factor > 1.
  • The location of the new coordinates of the image can be obtained by multiplying the coordinates of the original figure by 2.

For example, the coordinates of the image of a point A(4, 8) will be A'(2×4, 2×8) or A'(8, 16) after the dilation of scale 2 at the origin.

Here is the impact of dilation when (x, y) → (0.5x, 0.5y):

  • Dilation with scale factor 0.5, will have the rule as (x, y) → (0.5x, 0.5y). The image will be shrunk (reduction) as the scale factor < 1.
  • The location of the new coordinates of the image can be obtained by multiplying the coordinates of the original figure by 0.5.

For example, the coordinates of the image of a point A(4, 8) will be A'(0.5×4, 0.5×8) or A'(2, 4) after the dilation of scale 0.5 at the origin.

Keywords: dilation, transformation, enlargement, reduction

Learn more about dilation from brainly.com/question/13846651

#learnwithBrainly

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3 years ago
Will marl brainliest! Please help :,)
Gnom [1K]

Answer:

x= -4

Step-by-step explanation:

A line is 180 degrees. This means that we can use the equation

60+x+124=180

Simplify:

184+x=180

x= -4

We can check this answer by plugging it back in:

60 + (-4) +124 =180

180=180

I hope this helps!

6 0
3 years ago
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What is the recursive formula for the geometric sequence with this explicit formula?
IRINA_888 [86]

For the given geometric sequence, we have:

a_1 = 9\\\\a_n = (-1/3)*a_{n-1}

So the correct option is B.

<h3>Which is the recursive formula?</h3>

Here we have the geometric sequence:

a_n = 9*(-\frac{1}{3} )^{(n - 1)}

To get the initial value of the geometric sequence, we just need to replace n by 1, so we get:

a_1 = 9*(-\frac{1}{3} )*(1 - 1) = 9

Now, notice that the common ratio is (-1/3), this means that each term of the sequence is (-1/3) times the previous term.

a_n = (-1/3)*a_{n-1}

Then the correct option is B.

If you want to learn more about geometric sequences:

brainly.com/question/1509142

#SPJ1

5 0
2 years ago
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