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2 years ago

Need help with Matrices!!

Mathematics

1 answer:

Alex2 years ago

7 0

If I remember how to properly do matrices the answer should be:

-15 10 6
30 25 6
-15 0 16

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2. If a marble is selected at random from Adrian's Bag of Marbles,

Aleks04 [339]

Answer:

9 out of 16

Step-by-step explanation:

3 0

3 years ago

£980 is divided between Caroline, Sarah & Gavyn so that Caroline gets twice as much as Sarah, and Sarah gets three times as

mr Goodwill [35]

Answer:

£ 294

Step-by-step explanation:

Let Caroline get "c"

Sarah get "s"

Gavyn get "g"

Now,

Caroline gets TWICE as Sarah, so we write:

c = 2s

Also,

Sarah gets THREE times as Gavyn, so we can write:

s = 3g

g = (1/3)s

Also, total is 980 between 3 person, so we can write:

c + s + g = 980

We replace this equation with first 2 (in bold) to get:

$c + s + g = 980\\(2s) + s + (\frac{1}{3}s)=980\\3\frac{1}{3}s=980\\$

Now, we solve for s:

$3\frac{1}{3}s=980\\\frac{10}{3}s=980\\s=\frac{980}{\frac{10}{3}}\\s=980*\frac{3}{10}\\s=98*3\\s=294$

Sarah gets £ 294

7 0

3 years ago

Read 2 more answers

. A banana contains 105 calories. Last

Allushta [10]

both would be

2940 cal

<h2>but in split its</h2><h2><u>1470 cal</u></h2>

8 0

4 years ago

Read 2 more answers

Calculate the speed traveled for each situation below and then put them in

enyata [817]

<h3><u>Put them in order from least to greatest</u></h3><h3>Moving 12 km in 40 minutes = 0.3 km/min</h3><h3>Moving 6 km in 15 minutes = 0.4 km/min</h3><h3>Moving 10 km in 20 minutes = 0.5 km/min</h3><h3>Moving 18 km in 30 minutes = 0.6 km/min</h3>

<em><u>Solution:</u></em>

<em><u>The speed is given by formula:</u></em>

$speed = \frac{distance}{time}$

<em><u>Moving 12 km in 40 minutes</u></em>

$speed = \frac{12}{40} = 0.3\ km/min$

<em><u>Moving 18 km in 30 minutes</u></em>

$speed = \frac{18}{30} = 0.6\ km/min$

<em><u>Moving 6 km in 15 minutes</u></em>

$speed = \frac{6}{15} = 0.4\ km/min$

<em><u>Moving 10 km in 20 minutes</u></em>

$speed = \frac{10}{20} = 0.5\ km/min$

<em><u>Put them in order from least to greatest</u></em>

Moving 12 km in 40 minutes = 0.3 km/min

Moving 6 km in 15 minutes = 0.4 km/min

Moving 10 km in 20 minutes = 0.5 km/min

Moving 18 km in 30 minutes = 0.6 km/min

8 0

3 years ago

A group of 6 children and 7 adults are going to a movie. Child tickets cost $4, and adult tickets cost $8. How much will the mov

Artist 52 [7]

Answer:

$80

Step-by-step explanation:

6 * $4 = $24

7 * $8 = $56

$24

$56

__________

$80

5 0

3 years ago

Read 2 more answers