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3 years ago

Picture is question boys

Mathematics

1 answer:

Delicious77 [7]3 years ago

5 0

It's A. All you have to remember here are your rules of translations. If there is side to side movement within a parabola it will be indicated within a set of parenthesis with the x coordinate. If there is no set of parenthesis with the x there is no side to side movement. The quantity $(x+3) ^{2}$ tells us that the vertex has moved left 3 units.

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Write an equation for two angles A and B that are supplementary.

Alinara [238K]

Answer:

A. a + b = 180 is the correct option.

3 0

2 years ago

Grace's car left four skid marks on the road surface during a highway accident. Two of the skid marks were each 52 feet and two

Mashcka [7]

Answer:

The skid distance to be used is 54 feet.

Step-by-step explanation:

Given:

Four skid marks on the highway.

$52,52,56,56$ in feet.

We have to find the skid distance.

The skid distance that will be used to further calculate the skid speed is actually the mean skid distance.

Mean skid distance (m) :

⇒ $(m)=\frac{Sum\ of \ the\ skid\ marks }{Number\ of\ skid\ marks}$

⇒ $(m) =\frac{52+52+56+56}{4}$

⇒ $(m) =\frac{216}{4}$

⇒ $(m)=54$ feet.

So the skid distance to be used is 54 feet.

7 0

3 years ago

What is 2÷16×31+5980-10

vitfil [10]

Answer:47791/8 is the answer to your question but in improper fraction form

8 0

3 years ago

Read 2 more answers

At the city museum, child admission is $5.20 and adult admission is $8.70. On Saturday, 150 tickets were sold for a total sales

Evgen [1.6K]

Answer:

91 child tickets were sold

Step-by-step explanation:

Let c represent the number of child tickets sold. Then the number of adult tickets sold is (150-c) and the total revenue is ...

5.20c +8.70(150-c) = 986.50

-3.50c +1305 = 986.50 . . . . simplify

-3.50c = -318.50 . . . . . subtract 1305

c = -381.50/-3.50 = 91

The number of child tickets sold that day was 91.

4 0

3 years ago

Read 2 more answers

Kirsten runs an experiment for her Research Methods class in which she studies vocabulary learning in introductory-level French

Sidana [21]

Answer:

Kristen should use the paired t-test.

Step-by-step explanation:

The dependent t-test (also known as the paired t-test or paired-samples t-test) compares the two means associated groups to conclude if there is a statistically significant difference between these two means.

We use the paired t-test if we have two measurements on the same item, person or thing. We should also use this test if we have two items that are being measured with a unique condition.

For instance, an experimenter tests the effect of a medicine on a group of patients before and after giving the doses.

In this case, Kristen assesses the students' knowledge of French vocabulary at the start of the semester and then again at the end of the semester.

So, she collects data before and after the semester for vocabulary learning in introductory-level French class.

Thus, she is using a paired t-test to analyze whether the French students significantly increased their knowledge of French vocabulary.

The hypothesis is defined as:

H₀: There is no difference between the two means, i.e. μ₁ - μ₂ = 0.

Hₐ: There is a significant difference between the two means, i.e. μ₁ - μ₂ ≠ 0.

The test statistic is:

t = Sample mean difference ÷ (Standard deviation of difference/ Sample size)

Thus, Kristen should use the paired t-test.

7 0

3 years ago