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alexgriva [62]
3 years ago
7

Your score 60, 70, 60, 80 on your first for quizzes in algebra. What do you need to get on your 5th test in order for your avera

ge on all 5 tests to be a 71? ​
Mathematics
1 answer:
mihalych1998 [28]3 years ago
4 0

Answer:

85

Step-by-step explanation:

60+60+70+80+85 = 355

355/5 = 71

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9 time as many as 5 is 45
Nonamiya [84]
9 times 5 equals 45 so yes
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3 years ago
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Suppose you pick a tile out of a bag containing 26 tiles marked with the letters A through Z. What is the probability of picking
Liula [17]
Given that <span>a bag contains 26 tiles marked with the letters A through Z.

The probability of picking a letter from the name JACK is 4 / 26

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3 years ago
Suppose that a family wants to increase the size of the garden which is currently 16 feet long and 8 feet wide without changing
Cloud [144]

Answer:

See below

Step-by-step explanation:

<u>Sides of the garden</u>

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<u>New dimensions of the garden</u>

  • 16 + 2x and 8 + x

<u>1. The area of the new garden</u>

  • (16 + 2x)(8 + x) =
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<u>2. The difference in area </u>

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<u>3. x= 2 effect on the area</u>

  • 2*2^2 + 32*2 =
  • 8 + 64 =
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<u>4. Area difference = 160</u>

  • 2x^2 + 32x = 160
  • x^2 + 16x - 80 = 0
  • Solving we get positive root of 4 ft

<u>5. Area difference = 4 times</u>

  • 2x^2 + 32x = 128*3
  • 2x^2 + 32x - 384 = 0
  • x^2 + 16x - 192= 0
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3 0
3 years ago
Find the area of the triangle <br> 19cm<br> 15cm<br> 12cm
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Answer:

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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