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Artemon [7]
3 years ago
13

(3.rº – 7x + 2) - (2x² – 4x + 5)

Mathematics
1 answer:
Vladimir79 [104]3 years ago
5 0

Answer:

choice C: x2 -3x -3

Step-by-step explanation:

(3x^2-7x+2)-(2x^2-4x+5)

becomes

3x^2-7x+2 -2x^2+4x-5

adding

3x^2-2x^2 -7x+4x +2-5

which is

x^2 -3x -3

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Triangle ABC is shown below.
Andrew [12]

Answer:

C.) 14

Step-by-step explanation:

Look at the triangle: angles b and c have the same arch, so they are congruent.

In a triangle, if two angles are congruent, then the triangle is isosceles, having two equal sides.

The sides opposite the congruent angles are congruent:

∠B → opposite side → AC

∠C → opposite side → AB

The sides AB and AC are equal. Make an equation:

AB=AC\\\\2x=3x-7

Simplify the equation, solving for x. Add 7 to both sides:

2x+7=3x-7+7\\\\2x+7=3x

Subtract 2x from both sides:

2x-2x+7=3x-2x\\\\7=x

The value of x is 7. Insert the value of x into the given length of AC:

AC=3(7)-7

Simplify multiplication:

AC=21-7

Subtract:

AC=14

Therefore, the length of the line segment AC is 14.

:Done

8 0
3 years ago
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Yuki888 [10]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Approximately 18% of the population of California is 70 years or older. In a random sample of 4, what is the provability for 3 o
Semmy [17]

Answer:

The correct response will be "0.01913".

Step-by-step explanation:

According to the question,

p - P(70 years or older)

= 0.18

n = 4

X = no. of individuals who are older than 70 years

Now,

∴ P(X=r)=n_C_r \ p^r(1-p)^{n-r}

∴ P(X=3)=4_C_3(0.18)^3(1-0.18)^{4-3}

                   =4\times (0.18)^3(0.82)^1

                   =0.01913

 

8 0
3 years ago
Is -0.8 greater,less or equal to -0.3
Mrac [35]

Answer:

-0.8 is less than -0.3

Step-by-step explanation:

when dealing with decimals the closer it is to 1 the greater it is

4 0
3 years ago
Read 2 more answers
HELPP! <br> P(2, - 2); y = 7x+4<br> Write an equation for the line in point-slope form.
sasho [114]

Answer:

Step-by-step explanation:

y + 2 = 7(x - 2)

y + 2 = 7x + 14

y = 7x + 12

5 0
3 years ago
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