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dezoksy [38]
3 years ago
12

Peyton is 11 years old and knows 10-7=3 and 3+7=10 but finds it difficult to solve a math problem, such as 3x-5, because she can

not understand why there is a letter in the problem. Piaget would most likely place her in the

Mathematics
1 answer:
Colt1911 [192]3 years ago
7 0

Answer:

concrete operational stage

Step-by-step explanation:

Have a look at the attached photo below, it may be your full question:

The concrete operational stage is the third phase in Piaget's cognitive development theory. This period spans the period between childhood, it begins around 7 years of age and continues until about 11 years of age and is characterized by the development of logical thinking.

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KonstantinChe [14]
The answer is 3/4. You divide both numbers (54 and 72) by 18 and you get 3/4. Hope it helps!
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3 years ago
What is the equation of the quadratic graph with a focus of (3, 1) and a directrix of y = 5?
lbvjy [14]

Answer:

The equation of the quadratic graph is f(x)= - (1/8) (x-3)^2 + 3 (second option)

Step-by-step explanation:

Focus: F=(3,1)=(xf, yf)→xf=3, yf=1

Directrix: y=5 (horizontal line), then the axis of the parabola is vertical, and the equation has the form:

f(x)=[1 / (4p)] (x-h)^2+k

where Vertex: V=(h,k)

The directix y=5 must intercept the axis of the parabola at the point (3,5), and the vertex is the midpoint between this point and the focus:

Vertex is the midpoint between (3,5) and (3,1):

h=(3+3)/2→h=6/2→h=3

k=(5+1)/2→k=6/2→k=3

Vertex: V=(h,k)→V=(3,3)

p=yf-k→p=1-3→p=-2

Replacing the values in the equation:

f(x)= [ 1 / (4(-2)) ] (x-3)^2 + 3

f(x)=[ 1 / (-8) ] (x-3)^2 + 3

f(x)= - (1/8) (x-3)^2 + 3

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3 years ago
How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!
allochka39001 [22]

Answer:

I think b) is the answer I solve it but

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from a class containing 12 girls and 10 boys , students are to be selected to serve on a school advisory panel.
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Step-by-step explanation:

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3 years ago
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