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MAXImum [283]
2 years ago
14

Evaluate 3a+15+bc−6, when a=7, b=3, and c=15. Enter your answer in the box.

Mathematics
2 answers:
melamori03 [73]2 years ago
5 0
I think it's 75.
____________
stepladder [879]2 years ago
5 0
Given:
3a + 15 + bc - 6
a=7 b=3 c=15
First, you would have to substitute in the numbers for your variables:
3a + 15 + bc - 6
3(7) + 15 + (3)(15) - 6
Next, you want to simplify:
3(7) + 15 + (3)(15) - 6
21 + 15 + 45 - 6
Now, you would want you would want to combine everything together from left to right:
21 + 15 + 45 - 6
36 + 45 - 6
81 - 6
75
Answer: 75

I hope this helps!
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×WILL MARK AS BRAINLIEST×<br>Solve the equation for b, d and x
Lera25 [3.4K]
Solve for d:
(3 (a + x))/b = 2 d - 3 c
(3 (a + x))/b = 2 d - 3 c is equivalent to 2 d - 3 c = (3 (a + x))/b:
2 d - 3 c = (3 (a + x))/b
Add 3 c to both sides:
2 d = 3 c + (3 (a + x))/b
Divide both sides by 2:
Answer: d = (3 c)/2 + (3 (a + x))/(2 b)


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

Solve for x:
(3 (a + x))/b = 2 d - 3 c
Multiply both sides by b/3:
a + x = (2 b d)/3 - b c
Subtract a from both sides:
Answer:  x = (2 b d)/3 + (-a - b c)

____________________________


Solve for b:
(3 (a + x))/b = 2 d - 3 c
Take the reciprocal of both sides:
b/(3 (a + x)) = 1/(2 d - 3 c)
Multiply both sides by 3 (a + x):
Answer: b = (3 (a + x))/(2 d - 3 c)
5 0
3 years ago
Which is a composite number<br> 81<br> 61<br> 71<br> 41
Ne4ueva [31]

Answer:

81

Step-by-step explanation:

A composite number has factor more than just one and itself.

Factors of 81=

1, 3, 9, 27, 81

4 0
3 years ago
What is the sum when 1/5 is added to 5/2?
NeTakaya

Answer:

27/10

Step-by-step explanation:

6 0
3 years ago
Plz help me with this
Afina-wow [57]
824 just add all the sides so 12+12+400+400=824 and in simpler form w2+l2
3 0
3 years ago
Read 2 more answers
Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a recent year. suppose a samp
Anastaziya [24]
Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.

Let x = random test value
We want to determine P(x>4).

Calculate z-score.
z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667

From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
Therefore
P(z>6.1667) = 1 - P(z<=6.1667) = 1 - 1 = 0

Answer: The probability is 0.

8 0
3 years ago
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