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3 years ago

Multiply two and five-eighths negative two and three-fifths .

Mathematics

1 answer:

Yuki888 [10]3 years ago

4 0

The answer is -6.825 in fraction form, it would be -6 33/40

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12c - 4 = 14c - 10 c = ? !!!

Sergio [31]

The answer to this question is c=3

3 0

3 years ago

Simplify the following completely, show all work. √-45

scoray [572]

Answer:

$3\sqrt{5}i$

Step-by-step explanation:

$\sqrt{-45}$

$\sqrt{-9*5}$

$\sqrt{-9}\sqrt{5}$

$3i\sqrt{5}$

$3\sqrt{5}i$

7 0

2 years ago

A rectangular swimming pool is 15 feet long and x feet wide. What is the perimeter when x=12 feet

Arisa [49]

Answer: 54 square feet

Step-by-step explanation:

To find perimeter of a rectangle we must use the formula l+l+w+w=p where l and w represent width and length

Since we know length and width is x=12 just substitute so

15+15+12+12=54 so 54 is the perimeter

5 0

2 years ago

Help please:) please describe how you got the answer and will give big thanks!

ozzi

You can cross out c and d I think its B but im not positive

7 0

3 years ago

5x + 4y = 11 2x + 6y = -7

olga55 [171]

$\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55$

$x=\dfrac{135}{55}\\\\x=\dfrac{27}{11}\\\\Answer:\ x=\dfrac{27}{11}\ and\ y=-\dfrac{57}{22}\to\left(\dfrac{27}{11},\ -\dfrac{57}{22}\right)$

8 0

3 years ago