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laila [671]
3 years ago
10

What does -4x+7=11 equal ?

Mathematics
2 answers:
viktelen [127]3 years ago
6 0
-7 to make 4 so -4x=4 x=-1

The answer is x=-1

Hope this helps:)
katrin [286]3 years ago
3 0

Answer:

x = -1

Step-by-step explanation:

Well we know the equation -4x + 7 = 11

To solve this we will first subtract 7 from both sides

-4x + 7 = 11

-4x = 4

Next, we will divide both sides by the coefficient, -4, to isolate the variable, x

-4x = 4

x = -1

This will result in our answer of x = -1

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Let z denote a random variable that has a standard normal distribution. Determine each of the probabilities below. (Round all an
Lorico [155]

Answer:

P(Z < 2.37) = 0.9911.

Step-by-step explanation:

We are given that Let z denote a random variable that has a standard normal distribution.

Let Z = a random variable

So, Z ~ Standard Normal(0, 1)

As we know that the standard normal distribution has a mean of 0 and variance equal to 1.

                          Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = mean = 0

           \sigma = standard deviation = 1

Now, the probability that z has a value less than 2.37 is given by = P(Z < 2.37)

        P(Z < 2.37) = P(Z < \frac{2.37-0}{1} ) = P(Z < 2.37) = 0.9911

The above probability is calculated by looking at the value of x = 2.37 in the z table which has an area of 0.9911.

4 0
3 years ago
What value of c makes x2 − 24x + c a perfect square trinomial?<br><br> −144<br> −48<br> 48<br> 144
NARA [144]
I believe that the answer is 144 

8 0
3 years ago
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Given that a­­b = x, evaluate the following:<br> c<br> 2a3b+a2b+ab
Mrrafil [7]
It will be ......
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4 0
3 years ago
The two sets of lines are parallel. If the measure of angle A is 110°, what is the measure of angle B?
Mrrafil [7]

Answer:

Sum of 2 interior angles =180

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Step-by-step explanation:

5 0
3 years ago
How do u solve two points using the distance formula?
aliya0001 [1]

Step-by-step explanation:

For two points (x₁, y₁) and (x₂, y₂), the distance between them is:

d² = (x₁ − x₂)² + (y₁ − y₂)²

The order of points 1 and 2 don't matter.  You can switch it:

d² = (x₂ − x₁)² + (y₂ − y₁)²

This is basically the Pythagorean theorem for a coordinate system.

Let's do an example.  If you have points (1, 2) and (4, 6), then the distance between them is:

d² = (4 − 1)² + (6 − 2)²

d² = 3² + 4²

d² = 9 + 16

d² = 25

d = 5

If you have points with negative coordinates, remember that subtracting a negative is the same as adding a positive.

For example, the distance between (-1, -2) and (4, 10) is:

d² = (4 − (-1))² + (10 − (-2))²

d² = (4 + 1)² + (10 + 2)²

d² = 5² + 12²

d² = 25 + 144

d² = 169

d = 13

3 0
2 years ago
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