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goblinko [34]
3 years ago
12

Subtracting decimals 4 - 21

Mathematics
1 answer:
maw [93]3 years ago
4 0

Answer:

-17

Step-by-step explanation:

It is basically subtracting 4 from 21 except the answer is negative

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A teacher interested in determining the effect of a new computer program on learning to read conducted a study. One hundred stud
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c

Step-by-step explanation:

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4 years ago
What is 2/4^2 x 2/6^2
KIM [24]

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1/72

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A number y increased by 5 is at least -21
gayaneshka [121]

                - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - -

\diamond\large\blue\textsf{\textbf{\underline{\underline{Given question:-}}}}

             ❖ A number y increased by 5 is at least -21.

\diamond\large\blue\textsf{\textbf{\underline{\underline{Answer and how to solve:-}}}}

          ❖ First, if you come across the word "increased" it means we

    "increase" a number, or add something to that number, like

y increased by 5 \longmapsto \sf{y+5}

Now, we are also given that this expression is at least -21, which means it can't be -21; it can be -21 or it can be greater than -21.

So we have

\longmapsto\sf{y+5\geq -21}}

<em>Solving for y</em>

<em></em>

  •   Subtract 5 on both sides:-

\longmapsto\sf{y\geq -21-5}

\longmapsto\sf{y\geq -26}

So the values of y greater than or equal to -26 will make this inequality true.

<h3>Good luck with your studies.</h3>

 \rule{300}{1}

7 0
2 years ago
Read 2 more answers
You have two biased coins. Coin A comes up heads with probability 1/4. Coin B comes up heads with probability 3/4. However, you
slega [8]

Answer:

3/4

Step-by-step explanation:

Probability is the likelihood of an event.

No.of favourable outcomes/ Total no. of outcomes

Probability of coin selection : [Both coins have equal likelihood of being chosen]

  • Prob( Coin A Selection) = 1/2
  • Prob (Coin B selection) = 1/2

Probability of head & tail by both coins :

  • Prob (Head / Coin A) = 1/4
  • Prob (Tail / Coin A) = 1 - [ P (Head/Coin A) ] = 1 - 1/4 = 3/4
  • Prob (Head / Coin B) = 3/4
  • Prob (Tail / Coin B) = 1 - [ P (Head/Coin B) ] = 1 - 3/4 = 1/4

Probability of getting head by Coin A : Prob (Coin A) & Prob (Head/CoinA)  = 1/2 x 1/4   = 1/8

Probability of getting tail by Coin A : Prob (Coin A) & Prob (Tail/CoinA) = 1/2 x 3/4 = 3/8

Probability of getting head by Coin B : Prob (Coin B) & Prob (Head/CoinB)  = 1/2 x 3/4   = 3/8

Probability of getting tail by Coin B : Prob (Coin B) & Prob (Head/CoinB)  = 1/2 x 1/4   = 1/8

Probability 'The guess [head from coin B, tail from coin A] :

Prob (Coin A) & Prob (Tail/CoinA) or Prob (Coin B) & Prob (Head/CoinB)  

= 3/8 + 3/8 = 3/4

3 0
3 years ago
In preparation for the school play, the number of adult tickets sold by the ticket office was 5 less than twice the number of ch
den301095 [7]

Answer:

185

Step-by-step explanation:              

if it is 5 less then twice the number of the children's and the children's tickets you are going to add 95 +95= 190 then subtract 5       190-5=185

3 0
3 years ago
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