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LenKa [72]
3 years ago
9

I only need help on the estimate problems

Mathematics
1 answer:
Lena [83]3 years ago
8 0
1. 140,00
2. 1,004,000
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HELPPPPPPPPPPPPPPPPPPPPP
Vika [28.1K]

Answer:

-1.9b + 7.8

Step-by-step explanation:

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3 years ago
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10. Evaluate the expression (ab) for a = 2 and b = 5.​
Sveta_85 [38]

Answer:

10

Step-by-step explanation:

(5*2)=10

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Find the value of x and y
Natalija [7]

Hello and Good Morning/Afternoon:

<u>Let's take this problem step-by-step</u>:

<u>What does the information want:</u>

  • value of x
  • value of y

<u>Let's gather some information</u>:

  • ΔA'BC' and ΔABC are similar triangles

             ⇒ Angle B is shared by both triangles

             ⇒ Angle A' and A are the same, as they are both on parallel

                   lines, A'C' and AC, and both angles are formed with the

                   same line AB

                 ⇒ by the <em>Angle-Angle Theorem*</em>, they are similar triangles

<u>If they are similar triangles</u>:

   ⇒ their side lengths are proportional to each other

  • let's find x's value

          ⇒ let's set up a proportion

                 \frac{A'B}{AB} =\frac{A'C'}{AC} \\\frac{30}{x+30} =\frac{14}{22} \\14(x+30) = 30*22\\14x + 420 = 660\\14x = 240\\x = 17.143

  • let's find y's value

          ⇒ let's set up a proportion

                 \frac{BC'}{BC} =\frac{A'C'}{AC} \\\frac{y}{y+15} =\frac{14}{22} \\22y=14(y+15)\\22y=14y+210\\8y=210\\y=26.25

<u>Answer:</u>

  • <u>x= 17.143</u>
  • <u>y = 26.25</u>

Hope that helps!

#LearnwithBrainly

 

5 0
2 years ago
What is the Mean of 2,10,18,14,6
Arturiano [62]

Answer:

10

Step-by-step explanation:

2+10+18+14+6= 50

then divide by 5 to get mean = 10

8 0
3 years ago
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Evaluate the expression when c=4.<br>c²+5​
Sauron [17]
21 I think cause you use pemdas
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