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3 years ago

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Leslie weighs her marbles in a jar, and the scale reads 474 grams. The empty jar weighs 439 grams. Each marble weighs 5 grams. H

ow many marbles are in the jar?

1 answer:

elena55 [62]3 years ago

8 0

474-439 is 35 35/5 is 7 so 7 marbles

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ohaa [14]

Answer:

$(2,2)~ \text{and}~ (-2,-2)$

Step by step explanation:

$x^2 +y^2 =8~~~~~~...(i)\\\\x-y=0~~~~~~~~~...(ii)\\\\\text{From (ii):}\\\\x-y = 0 \implies x = y\\\\\text{Substitute x = y in eq (i):}\\\\~~~~~~y^2 +y^2 =8\\\\\implies 2y^2 = 8\\ \\\implies y^2 = \dfrac 82\\\\\implies y^2 = 4\\\\\implies y = \pm\sqrt 4\\\\\implies y = \pm 2\\\\\text{Substitute y = x in equation (i):}\\ \\~~~~~~x^2 +x^2 = 8\\ \\\implies 2x^2 = 8\\\\\implies x^2 = \dfrac 82\\\\\implies x^2 = 4\\\\\implies x = \pm\sqrt 4\\\\\implies x = \pm2\\\\$

$\text{Hence,}~ (x,y) = (\pm2, \pm 2)$

3 0

2 years ago

<img src="https://tex.z-dn.net/?f=-5%2B78%2B%28-32%29" id="TexFormula1" title="-5+78+(-32)" alt="-5+78+(-32)" align="absmiddle"

AysviL [449]

Adding a negative is same as subtraction
-5+78-32
73-32
41

5 0

3 years ago

Read 2 more answers

If Zoey has 26380345 candy then gave a equal amount to her 8 friends then she stole 82 back from each friend and some friends ca

mr Goodwill [35]

Is this a real question

Step-by-step explanation:

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3 years ago

For f(x) = 2x+31-5, name the type of function and describe each of the three transformations from

MAVERICK [17]

Answer:

x=-13 The solution is in the picture above. if you need more solutions let me know. :)

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3 years ago

Convert 36°F to degrees Celsius.

scoray [572]

Answer:

I think once you do the math you'd get 2.22 celsius.

Step-by-step explanation:

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3 years ago