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3 years ago

Which equation can be used to find the value of a?

2 answers:

6 0

They can all be used.

A. a – 42 = 91
+42 +42
--------------
a= 133

B. 42 + a = 91
-42 -42
____________
a= 49

C. 91 + a = 42
-91 -91
-----------------
a= - 49

D. a – 91 = 42
+91 +91
---------------
a= 133

NNADVOKAT [17]3 years ago

3 0

They all can be applied.

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2x+1/4=4x-9/8 <br> Is it a no solution or real

Naddika [18.5K]

Answer:

The equation has a real solution which is:

$x=\frac{11}{16}$

Step-by-step explanation:

Given the equation

$2x+\frac{1}{4}=4x-\frac{9}{8}$

<u>Solving the equation</u>

$2x+\frac{1}{4}=4x-\frac{9}{8}$

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$2x+\frac{1}{4}-\frac{1}{4}=4x-\frac{9}{8}-\frac{1}{4}$

Simplify

$2x=4x-\frac{11}{8}$

Subtract 4x from both sides

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Simplify

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Simplify

$x=\frac{11}{16}$

Therefore, the equation has a real solution which is:

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3 years ago

A jar contains 3 chocolate cookies, 5 peanut butter cookies, and 6 coconut cookies. If 3 cookies are selected in succession, wha

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The answer is 45/1372.

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The probability of selecting peanut butter cookies is the number of peanut butter cookies divided by total number of cookies: 5/14
The probability of selecting coconut cookies is the number of coconut cookies divided by total number of cookies: 3/14

Since replacement occurs each time, that means that the total number of cookies remain the same. To calculate the probability of selecting chocolate, then peanut butter, and then coconut cookies, we will use the multiplication rule which says that if events occur together, their probabilities multiply:
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