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max2010maxim [7]
3 years ago
9

Shelly spent 17 min washing the dishes and 38 min for cleaning her room.explain how you can mental math to find how long Shelly

spent on the two tasks
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0
Well you could round which would make it easier but not exact so like 20+40=60 minutes but if it needs to be exact it wouldnt be hard to just do 17+38= 55 hope this helps:)
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Select the correct answer. This graph represents a quadratic function. What is the value of a in this function’s equation? A)-1
Schach [20]

Answer:

Step-by-step explanation:

We will use the work form of a quadratic to determine what a is...in fact we will write the equation for the whole thing in the process, because it's part of solving for a.

y = ±|a|(x - h)² + k

where x and y are from a coordinate point on the graph, h and k are the coordinates of the vertex, the absolute value of a indicates how steep or flat the graph is compared to the parent graph, and the ± is because a positive parabola opens up and a negative one opens upside down.

The vertex is (0, 9) and the coordinate point I chose to use is (3, 0). Filling those in and solving for a:

0 = ±|a|(3 - 0)² + 9 and

0 = ±|a|(3)² + 9 and

-9 = ±|a|9 and

-1 = ±|a| so a = 1. Because this is an upside down parabola the negative is out front, but a is independent of it. The correct choice is C. The quadratic function is

y=-x^2+9 or in more detailed form:

y=-(x-0)^2+9

5 0
3 years ago
Read 2 more answers
The solution of the equation 3(p - 5) = 5p -27 is
inn [45]

Answer:

A)  p = 6

Step-by-step explanation:

Given equation:

3(p - 5) = 5p -27

<u />

Apply the <u>Distributive Property of Multiplication over subtraction law</u>:

⇒ 3 · p - 3 · 5 = 5p - 27

⇒ 3p - 15 = 5p - 27

Add 27 to both sides:

⇒ 3p - 15 + 27 = 5p - 27 + 27

⇒ 3p + 12 = 5p

Subtract 3p from both sides:

⇒ 3p - 3p + 12 = 5p - 3p

⇒ 12 = 2p

⇒ 2p = 12

Divide both sides by 2:

⇒ 2p ÷ 2 = 12 ÷ 2

⇒ p = 6

3 0
2 years ago
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A quadratic function in vertex form whose graph has a vertex of (-4,6) and passes through the point (-1,9)
scZoUnD [109]
Couldnt you just do the X's together and the Y's and your answer after you divide by each??
7 0
3 years ago
What is the area of the second triangle
blagie [28]

Answer:

To find the area of a triangle, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the area of the parallelogram.

8 0
3 years ago
How many cubic inches of material do you need to make a solid rubber ball with a diameter of 3 in.? Round your answer to two dec
makvit [3.9K]
C. 14.14 cu in.
V=4/3(3.14)r^3
V=4/3 (3.14)1.5^3
V=14.14
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3 years ago
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