3. How much time does it take for a bird flying at a speed of 45 kilometers per hour to travel a

on monday 72% of the class ordered lunch. which fraction shows the part of the class that ordered lunch?

katrin2010 [14]

There are no options but 72/100 or 36/50 or 18/25 or anything equal to that

4 0

3 years ago

Alexis uses toy blocks to build a model of a building. Each toy block is 1 cubic inch. The first three floors of the model are m

SIZIF [17.4K]

Answer:

For the 6 rows of 4 blocks the answer is 24, for the 4 rows of 4 blocks the answer is 16. Then you do 24x16.

Step-by-step explanation:

6 rows of 4 blocks = 6x4=24

4 rows of 4 blocks= 4x4=16

24

x16

___

124

+ 240

_____

364

So, your answer would be 346 cu in.!! Sorry if I'm wrong!! :(

6 0

3 years ago

To prepare for a bake-off, Lee used 640 grams of flour each day for 4 weeks. How many kilograms did Lee use in those 4 weeks?

dangina [55]

1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920

1000grams = 1kg

17920 divide 1000 =17.92

Lee uses 17.92kg in those 4weeks

8 0

3 years ago

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. (Enter your answers as a comma-

ivanzaharov [21]

Answer:

$c = \displaystyle\frac{9}{4}$

Step-by-step explanation:

The following information is missing in the given question:

$f(x) = \sqrt{x}$

Using this we may solve the question as:

We are given the following in the question:

$f(x) = \sqrt{x}, x \in [0,9]$

We have to find the number c such that f(x) satisfies the Mean value theorem.

Mean Value theorem:

It states that if the function is differentiable in the closed interval [a,b], differentiable in the interval (a,b), then there exist c in (a,b) such that:

$f'(c) = \displaystyle\frac{f(b)-f(a)}{b-a}$

Now,

$f(x) = \sqrt{x}\\f'(x) = \frac{1}{2\sqrt{x}}$

Continuity in [0,9]

Since a polynomial function is continuous everywhere, f(x) is continuous in [0,9]

Differentiability in (0,9)

Since a polynomial function is differentiable everywhere the given function is differentiable in interval (0,9)

Then, by mean value theorem:

$f'(c) = \displaystyle\frac{f(b)-f(a)}{b-a}\\\\\frac{1}{2\sqrt{c}} = \frac{f(9) - f(0)}{9-0} = \frac{3}{9}\\\\\frac{1}{2\sqrt{c}} = \frac{1}{3}\\\\c= \frac{9}{4}$

7 0

3 years ago

Brainly and 30 points

Nina [5.8K]

Answer:

$\huge\boxed{x = 25}$

Step-by-step explanation:

In these two lines that intersect, we can see that 4 angles are opposite from each other. This means that they are vertical angles and therefore equal. 2 of these angles have values next to them, which happen to be across from each other.

Based on this, we know that they are equal. If we write this as an equation, we can solve it to find the value of x.

75º = (4x - 25)º

Add 25º to both sides of the equation

100º = 4x

Divide both sides of the equation by 4 to isolate x

x = 25

Let me know if you have any questions!

4 0

3 years ago

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