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11Alexandr11 [23.1K]
4 years ago
15

What is the x-intercept of the line with the equation 1/3x + y = -15 ?

Mathematics
1 answer:
photoshop1234 [79]4 years ago
3 0
You find the x-intercept by replacing y with zero. 1/3x+0=-15. 1/3x=-15. Next, you have to divide each side by 1/3. In order to divide a fraction, you have to flip it , then multiply. That means you are now multiplying by 3. -15 times 3 is -45, which means x=-45. That means your answer is (-45,0)
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A bakery sold a total of 400 cupcakes in a day, and 43% of them were vanilla flavored. how many of the cupcakes sold that day we
garik1379 [7]

The number of the cupcakes sold that day that were vanilla flavored is 172.

<h3>How do we calculate a number from a percentage?</h3>

The number of the cupcakes sold that day that were vanilla flavored can be calculated using the following formula:

Number of vanilla flavored cupcakes sold = Total number of cupcakes sold * Percentage that were vanilla flavored .............. (1)

Substituting the relevant values into equation (1), we have:

Number of vanilla flavored cupcakes sold = 400 * 43% = 172

Learn more about percentages here: brainly.com/question/14801224.

#SPJ1

7 0
2 years ago
Please answer this question only if you know the answer! 30 points and brainliest!
Allisa [31]

Answer:

(4, 3)

Step-by-step explanation:

If this point is reflected about the x-axis, the x-coordinate does not change.  The original y-coordiate, -3, becomes +3.

A': (4, 3)

5 0
3 years ago
Is knowing the coordinates of the vertex of a parabola enough to determine the domain and range?
puteri [66]

The <em>correct answers</em> are:


C) No: we would need to know if the vertex is a minimum or a maximum; and

C)( 0.25, 5.875).


Explanation:


The domain of any quadratic function is all real numbers.


The range, however, would depend on whether the quadratic was open upward or downward. If the vertex is a maximum, then the quadratic opens down and the range is all values of y less than or equal to the y-coordinate of the vertex.


If the vertex is a minimum, then the quadratic opens up and the range is all values of y greater than or equal to the y-coordinate of the vertex.


There is no way to identify from the coordinates of the vertex whether it is a maximum or a minimum, so we cannot tell what the range is.


The graph of the quadratic function is shown in the attachment. Tracing it, the vertex is at approximately (0.25, 0.5875).

5 0
4 years ago
Read 2 more answers
Please answer! (Easy) Will give brainlist!
EastWind [94]
What do i have to answer?
4 0
3 years ago
Going against the current, a boat takes 6 hours to make a 120-mile trip. When the boat travels with the current on the return tr
alexandr402 [8]

5(x+y)=6(x-y)=120

x+y=24

x-y=20

x=22

y=2

5 0
3 years ago
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