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Dmitriy789 [7]
3 years ago
5

Please help dont want to fail final exam

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
4 0

Answer:

$75 I think. Not 100% sure but like 95% sure :)

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On Saturday Keisha ran 3.218 kilometers. on Su nday she ran 2.87 kilometers. How much further did she run on Saturday than on Su
zimovet [89]

Answer:

0.808 you find the difference between the two numbers

4 0
3 years ago
How many solutions does this equation have?<br> (15x + 21) / 3<br> = 5x + 7
Lesechka [4]

Answer:

3*(5*x-7)-(15*x-21)=0

Step-by-step explanation:

3 • (5x - 7) -  (15x - 21)  = 0

Step  2  :

Equation at the end of step  2  :

 0  = 0

Step  3  :

Equations which are always true :

7 0
3 years ago
Subject : Maths<br> Level : High school<br> Topic : Surds<br> Points : 72
Mila [183]

Answer:

  • a = 5

Step-by-step explanation:

<u>Simplify:</u>

  • √5(√8 + √18) =
  • √5*8 + √5*18 =
  • √40 + √90 =
  • √4*10 + √9*10 =
  • 2√10 + 3√10 =
  • (2 + 3)√10 =
  • 5√10

<u>The value of a:</u>

  • a√10 = 5√10
  • a = 5
6 0
3 years ago
Is it true that (x + 3)2 = x2 + 9? Justify your answer.
Katena32 [7]

Answer:

No

Step-by-step explanation:

3 times 2 is 6 and 2 times x is 2x so therefore 2x+6 does not equal 2x+9. Hope this helps!

3 0
3 years ago
Read 2 more answers
marisol has $475. she wants to buy a printer that costs $245.99 but is currently on sale with a 35%bdiscount. marisol will also
Natasha2012 [34]

Answer:

Marisol will have $303.91 left after her purchase.

Step-by-step explanation:

I used Omni Calculator

Original price - $ 245.99  --> Off - 35  %  -->plus tax

Your deal

Final price - $ 171.09

Savings  -$ 92.12

475-245.99=$ 301.91

4 0
3 years ago
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