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Nata [24]
2 years ago
6

The answer to this question

Mathematics
1 answer:
weqwewe [10]2 years ago
4 0

Answer:

2 miles per hour!

Step-by-step explanation:

It shows that it changes by 2 hours each time! :)

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noah is baking a two layer cake in which the bottom layer is a circle and the top layer is a triangle if line ab
padilas [110]

Since , segment AB ≅ segment BC as their arcs are congruent ; therefore , ΔABC is an isosceles triangle .

Properties of a circle :

If a circle is circumscribed around a triangle, then the vertices of the

1. Triangle divides the circle into three arcs

2. The three sides of the triangle are the chords of the circle

3. Each chord in the circle subtended by an arc

4. If two arcs equal, then they are subtended equal chord

∵ Circumscribed circle D around triangle ABC

- The vertices of triangle ABC lie on the circumference of the circle

AB , BC , AC are the chords of the circle

Arcs AB and AC are congruent

Arc AB ≅ arc AC

Arc AB subtended the chord AB

Arc AC subtended the chord AC

AB = AC

AB = 6 inches

AC = 6 inches

- The triangle with two equal sides is called an isosceles triangle

∴ Δ ABC is an isosceles triangle .

Noah know that the top layer of his cake is an isosceles triangle

* segment AB ≅ segment BC because their arcs are congruent;

Therefore, ΔABC is an isosceles triangle.

To learn more on circle properties :

brainly.com/question/4244936

#SPJ4

8 0
1 year ago
Two friends share 1/4 gallon of lemonade equally. What fraction of the gallon of lemonade does each friend get?
Lera25 [3.4K]
It can be 2/1 I think lol
8 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST Which of the following scale factors will result in an enlargement? A. k < –1 B. –1 < k &
Sergio [31]

Answer: OPTION A.

Step-by-step explanation:

By definition, a dilation can be an enlargement or a reduction of the shape.

An enlargement is when dilation creates a larger image and a reduction is when dilation creates a smaller image.

When, the scale factor is greater than 1, the image is an enlargement and when the scale factor is between 0 and 1, the image is a reduction.

It is important to know that with a negative scale factor the enlargement will will be inverted and it will also be on the other side of the center of dilation.

Knowing this, we can say that the scale factor that will result in an enlargement is:

k

5 0
2 years ago
Evaluating expressions please help
MAXImum [283]

Answer:

-15

Step-by-step explanation:

-1-7*(2)=-1-14=-15

6 0
2 years ago
A researcher is going to estimate the average typing speed of students of a college. He selects a random sample of 20 students a
Stella [2.4K]

Answer:

The margin of error of the 90% confidence interval of a student's average typing speed is of 1.933 wpm.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.7291

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample. For this question, we have s = 5, n = 20. So

M = T\frac{s}{\sqrt{n}}

M = 1.7291\frac{5}{\sqrt{20}}

M = 1.933

The margin of error of the 90% confidence interval of a student's average typing speed is of 1.933 wpm.

8 0
3 years ago
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