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3 years ago

Help plz:))) I’ll mark u brainliest ASAP!!!

Mathematics

2 answers:

ss7ja [257]3 years ago

7 0

Answer:

x=10

Step-by-step explanation:

3x-20=10

add 20 to both sides

3x=30

divide 3 both sides

end with x=10

Slav-nsk [51]3 years ago

5 0

Answer:

x=10

Step-by-step explanation:

it's a equilateral triangle So its every sides are equal

So the equation is

3x-20=10

=>3x=10+30

=>3x=30

=>x=30/3

therefore

x=10

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3. Vocabulary Suppose △MNP ∼△RST. How can you identify corresponding parts?

MakcuM [25]

Similar triangles may or may not have congruent sides, but the ratio of the corresponding sides will always be congruent.

(3) Corresponding sides of △MNP and △RST

Given that △MNP ∼△RST.

This means that, the corresponding sides are:

MN and RS
MP and RT
NP and ST

(4) The equal measures

Given that △ABC ∼△TUV

This means that, the corresponding angles are equal, but corresponding sides are not.

So, the equal measures are:

(a). the measures of ∠A and ∠T
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The scale mapping is given as:

$Ratio = 1\ in : 100\ mi$

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500 is 5 times 100

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Read more about similar triangles at:

brainly.com/question/14285697

3 0

3 years ago

F(x)=9 x^{3} +2x^2-5x+4 and g(x)=5x^3-7x+4. What is f(x)-g(x)? Show all of your steps and write your finial answer in factored f

olasank [31]

Answer:

{ -0.5 - √2, 0, -.5 + √2 }

Step-by-step explanation:

Let's rewrite these two functions in a vertical column:

f(x)=9 x^{3} +2x^2-5x+4

-g(x)=5x^3-7x+4

Now combine (through subtraction) like terms, in order of descending powers of x:

f(x) - g(x) = 4x^ 3 + 2x^2 + 2x

Let's do some preliminary factoring here. Factor 2x out of each term, obtaining

f(x) - g(x) = 2x(2x^2 + x + 1)

First setting 2x = 0, we find that x = 0 is one solution.

Applying the quadratic formula to 2x^2 + x + 1, we see that a = 2, b = 1 and c = 1. Then the two roots of this quadratic are:

-1 plus or minus √(1^2 - 4(2)(1) ) -1 ± √(8)

x = ----------------------------------------------- = ---------------

2(1) 2

This simplifies to:

-1 plus or minus √(1^2 - 4(2)(1) ) -1 ± 2√(2)

x = ----------------------------------------------- = ---------------

2(1) 2

Thus, the roots of f(x) - g(x) are { -0.5 - √2, 0, -.5 + √2 }

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4 years ago

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kobusy [5.1K]

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3 years ago

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kondor19780726 [428]

Answer:

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3 years ago

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156

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2 years ago