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mariarad [96]
4 years ago
10

Ashley picked up 15 rocks. 3 igneous, 3 metamorphic, and 9 sedimentary. What is the ratio of sedimentary rocks to the total numb

er of rocks?
Mathematics
2 answers:
777dan777 [17]4 years ago
6 0

Answer:

9:6 or 3:2

Step-by-step explanation:

polet [3.4K]4 years ago
4 0

Answer:

9:15 or 3:5

Step-by-step explanation:

There are 9 sedimentary rocks, and there are 15 total rocks. So the ratio would be 9:15 OR you could say 3:5 in simplest form.

Hope this helped! :)

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What is the equation of the line that passes through the point (3, 0) and is perpendicular to the line 2x – y = 5?
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Answer:

\large\boxed{y=-\dfrac{1}{2}x+\dfrac{3}{2}}

Step-by-step explanation:

\text{Let}\ k:y=_1x+b_1\ \text{and}\ l:y=m_2x+b_2.\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\============================\\\\\text{We have}\ 2x-y=5.\\\\\text{Convert to the slope-intercept form y = mx + b:}\\\\2x-y=5\qquad\text{subtract 2x from both sides}\\\\-y=-2x+5\qquad\text{change the signs}\\\\y=2x-5\to m_1=2\\\\\text{Therefore}\ m_2=-\dfrac{1}{2}.

\text{The equation of the searched line:}\ y=-\dfrac{1}{2}x+b.\\\\\text{The line passes through }(3,\ 0).\\\\\text{Put the coordinates of the point to the equation.}\ x=3,\ y=0:\\\\0=-\dfrac{1}{2}(3)+b\\\\0=-\dfrac{3}{2}+b\qquad\text{add}\ \dfrac{3}{2} \text{to both sides}\\\\b=\dfrac{3}{2}

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4 years ago
Solve for x.<br> B<br> 37.<br> 11<br> C
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A game center has a $5 admission fee in charges $0.50 for each game played. Write an equation that represents the cost, why, in
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Step-by-step explanation:

3 0
3 years ago
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72-2x=86-3x solve for x
SpyIntel [72]

Answer:

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Step-by-step explanation:

1.subtract 72 from 86

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PLEASE HELP
ahrayia [7]

Answer:

(\sqrt{30}-2\sqrt{5})\ m

Step-by-step explanation:

we know that

The length of the side, s, of a cube with a surface area, SA is equal to the formula

s=\sqrt{\frac{SA}{6}}

Step 1

Find the length of the side, s, of a cube with a surface area of 180\ m^{2}

we have

SA=180\ m^{2}

substitute in the formula

s=\sqrt{\frac{180}{6}}

s=\sqrt{30}\ m

Step 2

Find the length of the side, s, of a cube with a surface area of 120\ m^{2}

we have

SA=120\ m^{2}

substitute in the formula

s=\sqrt{\frac{120}{6}}

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Step 3

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(\sqrt{30}-2\sqrt{5})\ m

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