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Andru [333]
3 years ago
8

Write 13/40 as a decimal?

Mathematics
2 answers:
borishaifa [10]3 years ago
6 0
0.325 is the answer. :)

erik [133]3 years ago
4 0
13/40 = 0.325 as a decimal
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HELP NEED HELP!<br> Choose the similar triangles that have a hypotenuse defined by the equation
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3 years ago
3)June 2019-In the diagram below of AABC, D is a
Alexeev081 [22]

Answer:

BC = 23.8

Step-by-step explanation:

See the diagram attached.

Given AC ║ DE and BD = 5, DA = 12 and BE = 7.

We have to find BC.

Since, AC ║ DE, so, Δ ABC and Δ DBE are similar.

If two triangles are similar then the ratio of their corresponding sides remains the same.

Hence, \frac{BD}{BA} = \frac{BE}{BC}

⇒ \frac{5}{12 + 5} = \frac{7}{BC}

⇒ BC = \frac{7 \times 17}{5} = 23.8 (Answer)

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3 years ago
When evaluating (6x+3)2 -5 for x= 1, the given value of 1 is substituted for what part of the expression?
aev [14]

Answer:

variable

Step-by-step explanation:

the variable

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6 0
3 years ago
What is the result of adding the system of equations? 2x+y=4 3x-y=6
tatyana61 [14]

Answer:

2x + y = 4

3x - y = 6

I + II

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4 0
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i need help with number 7. its solving systems of equations by substitution. please show work!!! i need help
SCORPION-xisa [38]
-4x+y=6
-5x-y=21

Solve for one side of either equation. I will use the first equation and solve for y.

-4x+y=6
+4x +4x

Y=4x+6
-5x-y=21

Now when you substitute, make sure to distribute properly including the easily missed negative.

-5x-(4x+6)=21
-5x-4x-6=21
-9x-6=21
-9x=27
X=27/-9

X=-3


Now that you know X, substitute to find Y.

Y=4(-3)+6
Y=-12+6

Y=-6

So your final answer is:
X=-3 Y=-6
(-3,-6)
6 0
3 years ago
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