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MAXImum [283]
3 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]3 years ago
5 0
I think it's 75.
____________
stepladder [879]3 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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The first angle of a triangle is 3 times as large as the second angle. The third angle is twice as large as the second angle. Fi
Elan Coil [88]

Answer:

you have to multiply

Step-by-step explanation:

8 0
4 years ago
I need help. Basically, I need to figure out the dependent and independent value of a function.
Rama09 [41]

Answer:

  • x = log(y/4)/log(1.0256)
  • your answer for y=12 is correct

Step-by-step explanation:

The question is asking you to solve ...

   y = f(x)

for x. (In other words, find the inverse function.)

You already did this using a constant for y. Do the same thing with y instead of the constant.

  y = 4(1.0256^x)

  y/4 = 1.0256^x . . . . . . . divide by 4

  log(y/4) = x·log(1.0256) . . . . . take logs

  log(y/4)/log(1.0256) = x . . . . . divide by the coefficient of x

Now, you have a model for x in terms of y, which is what the question is asking for.

  x = log(y/4)/log(1.0256) . . . . . . . exact expression

When y=12, this is ...

  x = log(12/4)/log(1.0256) ≈ 43.46 . . . . weeks

_____

This is a linear equation in log(y), so can be written as such:

  x = 91.0912·log(y) -54.8424 . . . . . approximate expression

6 0
3 years ago
Please help with this question!
Volgvan

Answer:

hey hope you get the answer right

Step-by-step explanation:

4 0
3 years ago
Consider the expression 25 – 10 ÷ 2 + 3.
Tems11 [23]

Given:

The expression is:

25-10\div 2+3

To find:

Part A: The expression using parentheses so that the expression equals 23.

Part B: The expression using parentheses so that the expression equals 3.

Solution:

Part A:

In option A,

(25-10)\div 2+3=15\div 2+3

(25-10)\div 2+3=7.5+3                       [Using BODMAS]

(25-10)\div 2+3=10.5

In option B,

25-10\div (2+3)=25-10\div 5

25-10\div (2+3)=25-2                      [Using BODMAS]

25-10\div (2+3)=23

In option C,

(25-10)\div (2+3)=15\div 5

(25-10)\div (2+3)=3

In option D,

25-(10\div 2)+3=25-5+3

25-(10\div 2)+3=28-5                     [Using BODMAS]

25-(10\div 2)+3=23

After the calculation, we have 25-10\div (2+3)=23 and 25-(10\div 2)+3=23.

Therefore, the correct options are B and D.

Part B: From part A, it is clear that

(25-10)\div (2+3)=3

Therefore, the correct option is C.

8 0
3 years ago
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