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2 years ago

Two computer disks and three notebooks cost $17. However,

Mathematics

1 answer:

zhuklara [117]2 years ago

3 0

Answer:

Computer disks are $4 each

Notebooks are $3 each

Step-by-step explanation:

For the first equation

$4 x 2 disks = $8

$3 x 3 notebooks = $9

$9 + $8 = $17

For the second equation

$4 x 5 disks = $20

$3 x 4 notebooks = $12

$20 + $12 = $32

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015: Rectangle homework

yaroslaw [1]

Answer:

Length: 6 ft

Width: 4 feet

Step-by-step explanation:

Length: L

Width: 2L - 8

2L + 2(2L - 8) = 20

2L + 4L - 16 = 20

6L = 36

L = 36/6

L = 6

W= 2(6)-8 = 4

7 0

2 years ago

Can someone help me with #2?? it would be much appreciated! :)

jekas [21]

There you go? Is that right or no?

4 0

3 years ago

Calculate cardiac output if the heart rate is 125 beats/minute, the end-diastolic volume is 130 ml, and the end-systolic volume

Anni [7]

Answer: cardiac output=11,250ml/min

Step-by-step explanation: Cardiac output = Heart rate(beats/min) × stokes volume (ml/beat)

Cardiac output = 125 ×(130 -40)

Cardiac output= 125×90 =11,250ml/min

7 0

3 years ago

Find all degree solutions in the interval 0° ≤ θ < 360°. If rounding is necessary, round to the nearest tenth of a degree. Us

xenn [34]

Answer:

$\theta_{1} \approx 30.473^{\textdegree}$

$\theta_{2} \approx 120.473^{\textdegree}$

$\theta_{3} \approx 210.473^{\textdegree}$

$\theta_{4}\approx 300.473^{\textdegree}$

Step-by-step explanation:

The equation needs to be rearranged in terms of one trigonometric function:

$5\cdot \sin 2\theta - 9\cdot \cos 2\theta = 0$

$5\cdot \tan 2\theta - 9 = 0$

$5\cdot \tan 2\theta = 9$

$\tan 2\theta = \frac{9}{5}$

$\theta = \frac{1}{2}\cdot \tan^{-1} \left(\frac{9}{5} \right)$

The tangent function has positive values in the 1st and 3rd Quadrants. Then, the solutions are:

$\theta_{1} \approx 30.473^{\textdegree}$

$\theta_{2} \approx 120.473^{\textdegree}$

$\theta_{3} \approx 210.473^{\textdegree}$

$\theta_{4}\approx 300.473^{\textdegree}$

3 0

2 years ago

Which expression is equivalent to x - 13 = 16?

sasho [114]

It would be c because you would subtract 13 on both side and the equation would be x - 13 = 16

5 0

2 years ago