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Anika [276]
3 years ago
6

(a+b-c)-(b-a-c) I NEED IT RN FOR A TEST OR ELSE I AM DEAD FOR LIFE

Mathematics
2 answers:
Zepler [3.9K]3 years ago
5 0

Answer:

<h2><em><u>2a</u></em></h2>

Step-by-step explanation:

(a+b-c)-(b-a-c)

= a + b - c - b + a + c

= a + a + b - b - c + c

= <em><u>2a (Ans)</u></em>

Marat540 [252]3 years ago
3 0
Here is the answer-I just took a screenshot off of an app called Symbolab which is really good for algebra

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A pet supplier has a stock of parakeets of which 20% are blue parakeets. A pet store orders 3 parakeets from this supplier. If t
Levart [38]

Answer:

0.384

Step-by-step explanation:

pet supplier has a stock of parakeets of which 20% are blue parakeets

20/100 = 0.2 blue parakeets (success)

1-0.2 = 0.8 not parakeets (not success)

A pet store orders 3 parakeets from this supplier

we need to find the chance of getting exactly one blue from 3 parakeets

P(x=1)=nCr (p)^r(q)^{n-r}

n=3, r=1, p = 0.2 , q=0.8

P(x=1)=3C1 (0.2)^1(0.8)^{2}

0.384

5 0
3 years ago
Commutative property
IrinaK [193]

Answer:

The commutative property states that the numbers on which we operate can be moved or swapped from their position without making any difference to the answer. The property holds for Addition and Multiplication, but not for subtraction and division.

<h2><u>the answer is the first one </u></h2>

8 0
2 years ago
Find the mean, median mode and range of: 75, 80, 60, 90, 85, 80, -7, 90, 70, 65
yaroslaw [1]

Answer:

Mean: 68.8.

Median: 77.5

Mode: 80, 90

Step-by-step explanation:

-7 + 60 + 65 + 70 + 75 + 80 + 80 + 85 + 90 + 90 = 688. Then divide by 10 because there are 10 numbers.

-7 + 60 + 65 + 70 + 75 + 80 + 80 + 85 + 90 + 90

(75, 80) are the middle numbers, so add them both, then divide by 2.

80, 90 appear more than the other numbers.

Range is highest - lowest. 90 - (-7) = 97, or it could be 83. I don't know.

4 0
3 years ago
Read 2 more answers
Find cosx if sinx cotx =0.5
Arada [10]

Answer:

cos x = 0.5

Step-by-step explanation:

Using the trigonometric identity

cot x = \frac{cosx}{sinx}

Given

sin x cot x = 0.5, then

sin x × \frac{cosx}{sinx} = 0.5 ← cancel sin x on numerator/ denominator

cos x = 0.5

5 0
4 years ago
Vanilla Ice Cream
wel

Answer:

1 cup of heavy cream

27 cups of whole milk

1/3 cups of sugar

7 teaspoons of vanilla extract

(serves 2 peopel)

Step-by-step explanation:

Since the whole thing is serving 4 people....you just have to divide all the ingredients by 2

6 0
3 years ago
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