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3 years ago

2 thousands divided by what number is equal to 2 hundreds?

Mathematics

1 answer:

laila [671]3 years ago

8 0

Answer:

Step-by-step explanation:

it is 10 2000÷10=200

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A random sample of 64 SAT scores of students applying for merit scholarships showed an average of 1400 with a standard deviation

Dennis_Churaev [7]

Answer: 95% confidence interval would be (1341.2,1458.8).

Step-by-step explanation:

Since we have given that

n = 64

Average = 1400

Standard deviation = 240

We need to find the 95% confidence interval for SAT scores.

So, z = 1.96

So, Interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1400\pm 1.96\times \dfrac{240}{\sqrt{64}}\\\\=1400\pm 1.96\times \dfrac{240}{8}\\\\=1400\pm 1.96\times 30\\\\=1400\pm 58.8\\\\=(1400-58.8,1400+58.8)\\\\=(1341.2,1458.8)$

Hence, 95% confidence interval would be (1341.2,1458.8).

8 0

3 years ago

Which equation is correct for these angles?

kozerog [31]

B because interior angles are supplementary
Means if we add both the angles we are going to get 180

5 0

2 years ago

A pair of parallel lines is cut by a transversal<br> What are the measures of the two marked angles?

krok68 [10]

Answer:

A 40 and 40

Step-by-step explanation: if two of the angles were cut by a transversal you would get A as an answer i think....

8 0

2 years ago

Using traditional methods, it takes 94 hours to receive a basic driving license. A new license training method using Computer Ai

natita [175]

Answer: the value of the test statistic is 2.11

Step-by-step explanation:

Given that;

sample mean x" = 95

standard deviation σ = 3

sample size n = 40

Null hypothesis H₀ : μ = 94

Alternative hypothesis H₁ : μ ≠ 94

Level of significance ∝ = 0.02

Test statistic value

z = (x" - μ) / ( σ/√n)

we substitute

z = (95 - 94) / ( 3/√40)

z = 1 / 0.4743

z = 2.11

Therefore, the value of the test statistic is 2.11

8 0

3 years ago

Line segment AB is dilated to create line segment A'B' using point Q as the center of dilation.

Mekhanik [1.2K]

The scale factor in the question given above is: 2 See the explanation below.

<h3>What is a scale factor?</h3>

In math, the scale factor is the extent or ratio by which a geometrical shape is enlarged or reduced.

<h3>What is the explanation for the above answer?</h3>

We know that:

The distance from point Q to point A is 1.25
The distance from point A to point A' is 1.25

Given the above, the distance from point Q to point A' is 2.50. This is double the distance from point Q to point A.

The scale factor is 2.

1.25 + 1.25 = 2.50

2.50 / 1.25 = 2

Learn more about scale factor at;
brainly.com/question/25722260
#SPJ1

7 0

2 years ago