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kozerog [31]
3 years ago
12

What is 7/9 x 5 2/5 please!

Mathematics
2 answers:
Zepler [3.9K]3 years ago
5 0

Answer:

4\frac{1}{5}

Step-by-step explanation:

=>\frac{7}{9} * 5 \frac{2}{5}

=> \frac{7}{9} * \frac{27}{5}

=> \frac{7*3}{5}

=> \frac{21}{5}

=> 4\frac{1}{5}

Lina20 [59]3 years ago
4 0

Answer:

4\frac{1}{5}

Step-by-step explanation:

\frac{7}{9} \times 5 \frac{2}{5}

\frac{7}{9} \times \frac{27}{5}

\frac{7 \times 27}{9 \times 5 }

\frac{189}{45}

\frac{21}{5}

=4\frac{1}{5}

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(5x²+2) - (-4x²+7)+(-3x²-5)
svp [43]

Answer:

6x^2   -10

Step-by-step explanation:

(5x²+2) - (-4x²+7)+(-3x²-5)

Distribute the minus sign

(5x²+2) +4x²-7 +(-3x²-5)

Combine like terms

5x²+4x²-3x²  +2-7-5

6x^2              -10

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How many vertices does a heptagon have
Olegator [25]
Hey! There are 7 sides and 7 vertices on a Heptagon. Hope this helps!
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Read 2 more answers
No work just an answer
Paladinen [302]

Answer:

437.4m

Step-by-step explanation:

1 cm = 4.5m

7.2x4.5=32.4

3x4.5=13.5

32.4x13.5 = 437.4m

3 0
3 years ago
Find the discriminant and the number of real roots for this equation.
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Step-by-step explanation

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3 years ago
Write the standard form of the line that passes through (-1,-3) and (2,1).
kobusy [5.1K]

Answer:

Step-by-step explanation:

\mathrm{Line\:passing\:through\:}\left(-1,\:-3\right)\mathrm{,\:}\left(2,\:1\right)\\\\\mathrm{Find\:the\:line\:}\\\mathbf{y=mx+b}\mathrm{\:passing\:through\:}\left(-1,\:-3\right)\mathrm{,\:}\left(2,\:1\right)\\\\\mathrm{Compute\:the\:slope\:}\left(-1,\:-3\right),\:\left(2,\:1\right):\quad \\m=\frac{4}{3}\\\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(-1,\:-3\right),\:\left(x_2,\:y_2\right)\\\left\\

\\m=\frac{1-\left(-3\right)}{2-\left(-1\right)}\\\\Refine\\\\m=\frac{4}{3}\\\\\mathrm{Compute\:the\:}y\mathrm{\:intercept}:\quad b=-\frac{5}{3}\\\\y=\frac{4}{3}x-\frac{5}{3}\\

Convert equation to standard form

y - \frac{4}{3} x + \frac{5}{3} = 0\\\\Multiply \:through\: by\: 3;\\\\3\times (y - \frac{4}{3} x + \frac{5}{3} )=0\\\\3y -4x+5 = 0\\Arrange\:n\:form\:of \:;\\Ax +By = C\\\\-4x +3y =-5

5 0
3 years ago
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