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creativ13 [48]
3 years ago
13

12-n/7=-1 what y’all think the answer is

Mathematics
2 answers:
mestny [16]3 years ago
8 0

Answer:

19

Step-by-step explanation:

12-n/7 = -1

Cross multiply

We have 12-n = -7

Collect like terms

12 + 7 = n

Therefore n = 19

mylen [45]3 years ago
3 0

Answer:

n=91

Explain:

mutiply both sides of the equation by 7: 84-n=-7

move constant to the right and change its sign: -n= -7 - 84

find the diffrence= -n= -91

change the signs: n=91

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A machine produces defective parts with three different probabilities depending on its state of repair. If the machine is in goo
Zina [86]

Answer:

Step-by-step explanation:

Given that a machine produces defective parts with three different probabilities depending on its state of repair.

condition             Good order         Wearing down               Needs main   Total

Prob                       0.8                            0.1                                   0.1              1

Defective               0.02                          0.1                                   0.3

Joint prob              0.016                         0.01                                0.03        0.056

a) 0.016

b) total = 0.056

c) If not defective from needs maintenance

Prob for not defective = 0.8*0.98+0.1*0.9+0.1*0.7\\=0.784+0.09+0.07\\=0.944

From machine that needs maintenance = 0.07

So reqd prob = \frac{0.07}{0.944} \\=0.0741

6 0
3 years ago
The sum of three consective even integers if the largest number is y
coldgirl [10]

Step-by-step explanation:

If y is largest number, you want y, and the two next smaller even integers smaller than y - i.e. y, y-2, and y-4

The sum of these is y + (y-2) + (y-4).

This simplifies to 3y - 6 or 3(y - 2)

Since we don’t know what y is, this is as far as we can solve the problem.

6 0
2 years ago
What is the answer to 5.09x15
Lady bird [3.3K]

5.09 times 15 equals 76.35

4 0
3 years ago
What is “ f(x) = 2x^2- 32x” in standard form if it has one?
kap26 [50]
Most textbooks interpret standard form of a quadratic function to be as follows:

f(x) = a x^{2}  + bx + c

In the function f(x) = 2 x^{2}  - 32x , notice we do not have a value for "c". Just place a "0" in for the c and you have standard form.

the criteria for standard form:
1. All like terms are combined
2. Degree must drop from left to right
3. The leading coefficient cannot be equal to zero.
6 0
3 years ago
The figure shows a net of a cube. Which expression can be used to find the total surface area of the cube?
sergij07 [2.7K]

Answer:

Option C: 6(7 * 7)

Step-by-step explanation:

There are six faces of the cube. Since each face is 7 by 7 units, there are 6(7 *7) units total.

6 0
1 year ago
Read 2 more answers
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