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Anika [276]
3 years ago
14

Please help me here....

Mathematics
1 answer:
ANEK [815]3 years ago
6 0
Remember you can do anything to an equation as long as you do it to both sides

alrighty
distribute, rmember that a(b+c)=ab+ac

-3x-9=-3x-3-5
combine like terms
-3x-9=-3x-8
add 3x to both sides
-9=-8
false
no solution

answer is no solution
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Can someone step by step explain the answer please
Vinvika [58]

Answer: z = \sqrt{10}

Step-by-step explanation:

To find <em>z</em>, you must set up a proportion to solve.

To find the altitude of a special right triangle, the formula is:

\frac{a}{x} =\frac{x}{b}

You can use <em>5</em> as <em>a</em> and <em>2</em> as <em>b</em> to complete the proportion:

\frac{5}{z} =\frac{z}{2}

Next, to solve:

<u>Step 1</u>: Cross-multiply.

\frac{5}{z} =\frac{z}{2}

(5)*(2) = z*z

10 = z²

<u>Step 2</u>: Take square root.

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I hope this helps!

8 0
3 years ago
A recipe requires sugar, flour and cocoa in the ratio 5:4:1
WARRIOR [948]
Let x be the amount of cocoa you use in the recipe.

then 4x is the amount of flour used, and 5x is the amount sugar used.

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hope this helps! :)
3 0
3 years ago
Find the surface area of the rectangular prism<br><br> 2mi 2mi<br> 4mi
skad [1K]

Answer:

the SA is 40

Step-by-step explanation:

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so it would be: 2(2x2+2x2+4x2)

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4 0
3 years ago
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Alex

Answer:

1.  {-1 , 0, 1 }

Step-by-step explanation:

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8 0
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ch4aika [34]

Answer:

Polygon B is similar to Polygon A.

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Polygon B has a <em>scale factor</em> of 2, because Polygon B looks identical to A, except the measurements are twice as large.

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3 years ago
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