Correct probability : 3/7
To find the correct probability, Noura needs to count ALL of the times she tossed the coin. To find that we just add 15 + 20, which equals 35.
Then to calculate the probability she will get heads is out the number of heads landed over the amount of times the coin was flipped.
15/35
We then simplify this fraction by dividing the top and bottom both by 5.
This leaves us with the answer of 3/7.
Answer:
d = 15
Step-by-step explanation:
Divide the numbers


Multiply all terms by the same value to eliminate fraction denominators

Cancel multiplied terms that are in the denominator

Multiply the numbers

Move the variable to the left

Hence, d= 15.
[RevyBreeze]
Answer: Your picture is blocked
Step-by-step explanation: Internet or something like that.
Answer:

Step-by-step explanation:

<span><span><span>−<span>3.5x</span></span>+7</span>−<span>(<span><span>5.3x</span>−4</span>)</span></span>Distribute the Negative Sign:<span>=<span><span><span>−<span>3.5x</span></span>+7</span>+<span><span>−1</span><span>(<span><span>5.3x</span>−4</span>)</span></span></span></span><span>=<span><span><span><span>−<span>3.5x</span></span>+7</span>+<span><span>−1</span><span>(<span>5.3x</span>)</span></span></span>+<span><span>(<span>−1</span>)</span><span>(<span>−4</span>)</span></span></span></span><span>=<span><span><span><span><span>−<span>3.5x</span></span>+7</span>+</span>−<span>5.3x</span></span>+4</span></span>Combine Like Terms:<span>=<span><span><span><span>−<span>3.5x</span></span>+7</span>+<span>−<span>5.3x</span></span></span>+4</span></span><span>=<span><span>(<span><span>−<span>3.5x</span></span>+<span>−<span>5.3x</span></span></span>)</span>+<span>(<span>7+4</span>)</span></span></span><span>=<span><span>−<span>8.8x</span></span>+11</span></span>Answer:<span>=<span><span>−<span>8.8x</span></span>+<span>11</span></span></span>