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3 years ago

a school day begins at 8:05 am and ends at 3:45 pm. How long is the school day? give answer using hours and minutes.

Mathematics

2 answers:

den301095 [7]3 years ago

6 0

The answer would be 7 hours and 40 minutes

Colt1911 [192]3 years ago

6 0

7 hours and 40 minutes.
hope that helps. message me if it does

You might be interested in

What are HK and GH?

tigry1 [53]

The triangles are similar triangles, and the values of HK and GH are (b) 4 and 2√5, respectively

<h3>How to determine the length HK?</h3>

The triangles are similar triangles, and they are represented by the following similarity ratio:

GK : HK = HK : JK

From the question, we have:

GK = 2 and JK = 8

So, we have:

2 : HK = HK : 8

Express as fractions

$\frac{2}{HK} = \frac{HK}{8}$

Cross multiply

HK² = 16

Take the positive square root of both sides

HK = 4

The length GH is calculated using the following Pythagoras theorem

GH² = GK² + HK²

This gives

GH² = 2² + 4²

Evaluate the squares

GH² = 20

Solve for GH

GH = 2√5

Hence, the values of HK and GH are (b) 4 and 2√5, respectively

Read more about similar triangles at:

brainly.com/question/14285697

#SPJ1

6 0

2 years ago

(-9x + 32) - (15x + 41)

uysha [10]

Answer:

Step-by-step explanation:

Distribute the Negative Sign:

=−9x+32+−1(15x+41)

=−9x+32+−1(15x)+(−1)(41)

=−9x+32+−15x+−41

Combine Like Terms:

=−9x+32+−15x+−41

=(−9x+−15x)+(32+−41)

=−24x+−9

3 0

3 years ago

Read 2 more answers

Help please!!!!!!!!!

dmitriy555 [2]

Answer:

$f\left(0\right)=\left(0\right)^2-4\left(0\right)=0-0=0$

$f\left(1\right)=\left(1\right)^2-4\left(1\right)=1-4=-3$

$f\left(2\right)=\left(2\right)^2-4\left(2\right)=4-8=-4$

$f\left(3\right)=\left(3\right)^2-4\left(3\right)=9-12=-3$

$f\left(4\right)=\left(4\right)^2-4\left(4\right)=16-16=0$

Step-by-step explanation:

Given the function

$f\left(x\right)=x^2-4x$

Putting x=0 in the equation to find f(0)

$f\left(x\right)=x^2-4x$

$f\left(0\right)=\left(0\right)^2-4\left(0\right)=0-0=0$

Putting x=1 in the equation to find f(1)

$f\left(x\right)=x^2-4x$

$f\left(1\right)=\left(1\right)^2-4\left(1\right)=1-4=-3$

Putting x=2 in the equation to find f(2)

$f\left(x\right)=x^2-4x$

$f\left(2\right)=\left(2\right)^2-4\left(2\right)=4-8=-4$

Putting x=3 in the equation to find f(3)

$f\left(x\right)=x^2-4x$

$f\left(3\right)=\left(3\right)^2-4\left(3\right)=9-12=-3$

Putting x=4 in the equation to find f(4)

$f\left(x\right)=x^2-4x$

$f\left(4\right)=\left(4\right)^2-4\left(4\right)=16-16=0$

5 0

3 years ago

Which formula is used to find circular mil area?

krok68 [10]

The term circular mil is common in expressing the cross sectional area of a wire. Electrical wires have very minute diameters that are often measured a thousandth of an inch. Hence, when you find the area of the circular wire, for convenience, the unit used is circular mil which is equivalent to one-thousandth of an inch.

For example, a wire has a diameter of 6×10⁻⁵ inches. To find its area:

A = πr² = π( 6×10⁻⁵ /2)² = 2.83×10⁻⁹ in²

Since 1 mil = 1/1000 (inch) or 0.001 inch

A = (2.83×10⁻⁹ in²)* (1 mil/ 0.001 inch)²
A = 0.00283 circular mils

7 0

3 years ago

Ayo um can i get help Please just show your work and tell what the area is

Sholpan [36]

Answer:

320 inches

Step-by-step explanation:

First, split the figures into 2. 1 short rectangle and long rectangle.

Find the area of the longer rectangle first.

Length = 16 + 8 = 24 in

Breadth = 16 - 8 = 8 in

Formula for area of rectangle = Length x Breadth

24 in x 8 in = 192 in (Area of long rectangle)

Find the area of the short rectangle.

Breadth = 16 - 8 = 8 in

16 x 8 = 128 in (Area of short rectangle)

Since they're combined,

192 + 128 = 320

I don't know if this is correct, but I hope it was helpful)

3 0

3 years ago