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VashaNatasha [74]
3 years ago
6

Mara had 7 cookies.She ate some Now she has 4 cookies. How many cookies did she eat? Draw a tape diagram

Mathematics
2 answers:
diamong [38]3 years ago
5 0
She ate 3 cookies then draw a tape diagram
Westkost [7]3 years ago
3 0
Mara ate 3 cookies because you subtract
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Arada [10]
In points form the answer is (-8,-4) and in equation form the answer is x=-8, y=-4
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Amy wants to carpet a room that is 12 feet by 8 feet.
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How would you solve 2-3÷(-1)×9
Ainat [17]

Answer:

the answer is 29

Step-by-step explanation:

i don't really know how to explain it but hopefully it right

5 0
3 years ago
Kelly earns $178.50 in interest on an account that earns simple interest at a rate of 4%. If she kept the money in the account f
Otrada [13]

Answer:

  $892.50

Step-by-step explanation:

The amount of interest earned is given by ...

  I = Prt

Filling in the given values, we have ...

  $178.50 = P·0.04·5

Dividing by 0.20 gives ...

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The principal amount in Kelly's account is $892.50.

7 0
3 years ago
What is the value of c such that the line y=2x+3 is tangent to the parabola y=cx^2
satela [25.4K]

The value of c such that the line y = 2\cdot x + 3 is tangent to the parabola y = c\cdot x^{2} is -\frac{1}{3}.

If y = 2\cdot x + 3 is a line <em>tangent</em> to the parabola y = c\cdot x^{2}, then we must observe the following condition, that is, the slope of the line is equal to the <em>first</em> derivative of the parabola:

2\cdot c \cdot x = 2 (1)

Then, we have the following system of equations:

y = 2\cdot x + 3 (1)

y = c\cdot x^{2} (2)

c\cdot x = 1 (3)

Whose solution is shown below:

By (3):

c =\frac{1}{x}

(3) in (2):

y = x (4)

(4) in (1):

y = -3

x = -3

c = -\frac{1}{3}

The value of c such that the line y = 2\cdot x + 3 is tangent to the parabola y = c\cdot x^{2} is -\frac{1}{3}.

We kindly invite to check this question on tangent lines: brainly.com/question/13424370

3 0
2 years ago
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