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3 years ago

9

Linda uses thread fo sew the booklets together. She cuts 6 inches of thread for each booklet. How many booklets can she stitch w

ith 50 inches of thread?

2 answers:

Juli2301 [7.4K]3 years ago

6 0

Answer:8

Step-by-step explanation:

50÷6= ?

so you need to find a number that is the closest which in this case is 8.

because 6×8=48

gayaneshka [121]3 years ago

5 0

Linda could only make 8 books

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An airplane travels 290 km between Austin and Dallas in 1 h 15 min. What is it’s average speed?

aniked [119]

The average speed of the plane between Austin and Dallas is 232 kmph

<u>Solution:</u>

Given that,

Total distance traveled by airplane = 290 km

Time taken for travel between Austin and Dallas = 1 hour 15 minute

Let us convert the time taken to hours

$\begin{array}{l}{1 \text { minute }=\frac{1}{60} \text { hours }} \\\\ {15 \text { minutes }=\frac{15}{60}=\frac{1}{4}} \\\\ {\text { 1 hour } 15 \text { minutes }=1 \frac{1}{4} \text { hours }=\frac{1 \times 4+1}{4}=\frac{5}{4} \text { hours }}\end{array}$

<em><u>The average speed is given as:</u></em>

$\text { Average speed }=\frac{\text { total distance }}{\text { total time taken }}$

Plugging in the values, we get,

$\text { Average speed }=\frac{290}{\frac{5}{4}}=\frac{290}{5} \times 4=232$

Hence the average speed is 232 kmph

6 0

2 years ago

jok3333 [9.3K]

I would say B but Im not sure

6 0

2 years ago

Read 2 more answers

Help please! show work

e-lub [12.9K]

Your answers are
A = 35.7°
B = 67.6°
C = 76.7°

cosine law

$a^2 = b^2 + c^2 -2bc \cos A \\
-2bc \cos A = a^2 - b^2 - c^2 \\ \\
\cos A = \dfrac{a^2 - b^2 - c^2}{-2bc} \\ \\
A = \cos^{-1}\left[ \dfrac{a^2 - b^2 - c^2}{-2bc} \right] \\ \\
A = \cos^{-1}\left[ \dfrac{12^2 - 19^2 - 20^2}{-2(19)(20)} \right] \\ \\
A = 35.723697$

A = 35.723697
sine law for the rest of the angles

$\displaystyle
\frac{\sin B}{b} = \frac{\sin A}{a} \\ \\
\sin B = \frac{b \sin A}{a} \\ \\
B = \sin^{-1} \left[ \frac{b \sin A}{a} \right] \\ \\
B = \sin^{-1} \left[ \frac{19 \sin 35.723697 }{12} \right] \\ \\
B \approx 67.58886795$

B = 67.58886795
All angles in triangle sum to 180 so find C with that

A + B + C = 180
C = 180 - A - B
C = 180 - 35.723697 - 67.58886795
C = 76.7°

7 0

3 years ago

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alukav5142 [94]

Answer:

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Sergio [31]

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