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3 years ago

PLEASE HELP ME -45= -2.5g

Mathematics

2 answers:

Rainbow [258]3 years ago

5 0

Answer:

g=18

Step-by-step explanation:

Isolate the variables by dividing each side by -2.5.

Elden [556K]3 years ago

3 0

Answer:

g=18

Step-by-step explanation:

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A silver ring has a mass of 2 grams and a volume of 0.2 cubic centimeters. Calculate its

Nastasia [14]

Answer:

<h3>The answer is 10 g/cm³</h3>

Step-by-step explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 2 g

volume = 0.2 cm³

So we have

$density = \frac{2}{0.2} \\$

We have the final answer as

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8 0

3 years ago

Factor completely 2x^3+6x^2+10x+30

beks73 [17]

Answer:

2(x+3) (x^2 + 5)

Step-by-step explanation:

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2 years ago

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What number is divisible by both 85 and 51

Vitek1552 [10]

17
85/17 is 5 and 51/17 is 3

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2 years ago

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Use substitution to solve the following system of linear equations and fill in the following blanks:

marissa [1.9K]

Answer:

$x=-4$

$y=3$

$z=-5$

Step-by-step explanation:

Given:

$x+y+z=-6$

$x-6y-7z=-29$

$-7y-5z=4$

Solve for $x$ in the 1st equation:

$x+y+z=-6$

$x+y=-z-6$

$x=-y-z-6$

Substitute the value of $x$ into the 2nd equation and solve for $z$ :

$x-6y-7z=-29$

$(-y-z-6)-6y-7=-29$

$-7y-z-13=-29$

$-7y-z=-16$

$-z=-16+7y$

$z=16-7y$

Substitute the value of $z$ into the 3rd equation and solve for $y$ :

$-7y-5z=4$

$-7y-5(16-7y)=4$

$-7y-80+35y=4$

$28y-80=4$

$28y=84$

$y=3$

Plug $y=3$ into the solved expression for $z$ and evaluate to solve for $z$ :

$z=16-7(3)$

$z=16-21$

$z=-5$

Plug $z=-5$ into the solved expression for $x$ and evaluate to solve for $x$ :

$x=-(3)-(-5)-6$

$x=-3+5-6$

$x=2-6$

$x=-4$

Therefore:

$x=-4$

$y=3$

$z=-5$

6 0

2 years ago

PLZ HELP, WILL MARK BRAINLIEST

andreev551 [17]

220.5

i dont know how to show my work sorry :) hope it helps

3 0

2 years ago