All categories

2 years ago

Which statement is true?

Mathematics

1 answer:

Lena [83]2 years ago

3 0

Answer:

all rectangles are quadrilaterals

Step-by-step explanation:

this is because they have all right angles it doesn't matter the size or measurements, and this goes for squares as well since squares are a type of rectangle and we all know that squares have all equal side lengths and they all have right angles

You might be interested in

Find the slope of the line

Dima020 [189]

Answer:

Slope = $-\frac{3}{14}$

Step-by-step explanation:

We know that:

X₁ = -3

Y₁ = 5

X₂ = 11

Y₂ = 2

And the formula of the slope is:

Slope = $\frac{y_2 - y_1}{x_2 - x_1}$

Therefore:

Slope = $\frac{2-5}{11-(-3)}$

<u>Slope = </u> $-\frac{3}{14}$ <u />

Hope this helps!

4 0

2 years ago

Read 2 more answers

Simplify (2x+1)(x+8) - (x-3)(2x+1)

Olin [163]

Answer:

22x+11 is your answer

Step-by-step explanation:

(2x+1)(x+8) - (x-3)(2x+1)

(2x+1)(x+8-x+3)

(2x+1)(11)

=22x+11

8 0

2 years ago

100 points and brainliest

Vlad [161]

Answer:

x= 90 degrees because AD is the perpendicular bisector and the angle bisector

y=86 degrees because 47+47+86=180

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked h

Andrews [41]

Answer:

[0.9 months, 32.69 months]

Step-by-step explanation:

The mean is

$\bf \bar x=\frac{5+17+12+21+29}{5}=16.8$

The standard deviation is

$\bf s=\sqrt{\frac{(5-16.8)^2+(17-16.8)^2+(12-16.8)^2+(21-16.8)^2+(29-16.8)^2}{5}}=8.1092$

Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals <em>95% = 0.95 </em>

Using a spreadsheet we find these values are

a = 0.906

b = 32.694

<h3>(See picture) </h3>

and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is

[0.9 months, 32.69 months]

4 0

2 years ago

In a school band, the ratio of student late who play the tuba to the students who play the trumpets is 1:6. The ratio of student

AlexFokin [52]

A lot, 1:6 + 3:4 +3 = .116789465 hope this helps....

7 0

2 years ago