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Naya [18.7K]
3 years ago
6

In preparing for a test on a set of material, is it better to study one topic at a time or to study topics mixed together? In on

e study,1 a sample of fourth graders were taught four equations. Half of the children learned by studying repeated examples of one equation at a time, while the other half studied mixed problem sets that included examples of all four types of calculations grouped together. A day later, all the students were given a test on the material. The students in the mixed practice group had an average grade of 77, while the students in the one-at-a-time group had an average grade of 38. What is the best estimate for the difference in the average grade between fourth-grade students who study mixed problems and those who study each equation independently?
Mathematics
1 answer:
cricket20 [7]3 years ago
8 0

Answer:

the mixed problem learners

Step-by-step explanation:

because if you study more at a time you may learn more because you are getting mor information in your head than if you study one thing at a time and only get one way of learning in your head by learning 1  then another

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A restaurant orders corn tortillas and flour tortillas. The ratio of the number of corn tortillas to the number of flour tortill
Arada [10]

Answer:5:9

Step-by-step explanation:

4+5=9. There are 5 Flour tortillas So there for it would be:5:9

(Number of flour tortillas:Total tortillas)

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3 years ago
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What z score in a normal distribution has 33% of all score above it? ap stats quiz 2.2a answers?
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What z score in a normal distribution has 33% of all score above it?

Answer: A z score which has 33% of all scores above it, will have 67% of all scores  below it.

To find the required z score, we need to find the z value corresponding to probability 0.67.

Using the standard normal table, we have:

z(0.67)=0.44

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3 years ago
Given: BAD = CAD. Find the perimeter of ABC.
11111nata11111 [884]

Answer:

34 units

Step-by-step explanation:

Since the triangles are equal, the bottom length of triangle CAD will be the same as the bottom length of BAD. This means that the total length of the bottom of triangle ABC is 6 (3 + 3).

Next, you need to find the length of AC and again, since they're the same triangle, AB will be the same as AC, 14.

The three side lengths of the triangle will be 6, 14, and 14, so the perimeter is

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What are the roots of the equation?<br><br> x^2+24=−11x<br><br> Enter your answers in the boxes.
docker41 [41]
<span>The <u>correct answers</u> are:

x=-3 and x=-8.

Explanation<span>:

We can first write this in standard form, ax</span></span>²<span><span>+bx+c=0. To do this, we will add 11x to both sides:
x</span></span>²<span><span>+24+11x=-11x+11x
x</span></span>²<span><span>+11x+24=0.

Now we can factor this. Look for factors of c, 24, that sum to b, 11. Factors of 24 are:
1 and 24 (sum 25)
2 and 12 (sum 14)
3 and 8 (sum 11)
4 and 6 (sum 10).

The factors we need are 3 and 8, since they sum to 11. This gives us factored form:
(x+3)(x+8)=0.

Using the zero product property, we know that in order to have a product of 0, one or both of the factors must be 0. This means we have:
x+3=0 or x+8=0.

Solving the first equation:
x+3-3=0-3
x=-3.

Solving the second equation:
x+8-8=0-8
x=-8.</span></span>
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3 years ago
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Answer:

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4 years ago
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