All categories

3 years ago

Solve the system of equations. * 4x - 2y = 16 y = -5x + 13

Mathematics

1 answer:

LekaFEV [45]3 years ago

6 0

Answer:

is below

Step-by-step explanation:

x= -5/7

y= -66/7

your welcome

You might be interested in

A circle has a circumference of 266.9 inches. What is the Diameter of this circle? What is the Radius? Use 3.14 as the approxima

Natali5045456 [20]

Answer:

r= 42.48 and d=84.96

Step-by-step explanation:

too slow to type solution, gogogo answer your thing dude!

4 0

3 years ago

1. What is the hypothesis for this conditional statement? If a number is even then it is divisible by 2.

liubo4ka [24]

Answer:

If a number is even is the conditional statement.

Step-by-step explanation:

The phrase that starts with "if" is the hypothesis for conditional statement. The phrase that starts with "then" is conclusion for the statement.

Here, the statement is "If a number is even then it is divisible by 2".

Hypothesis = If a number is even

Conclusion = It is divisible by 2

6 0

3 years ago

The diffrence of a number m and 30 is 10

viktelen [127]

M - 30 = 10

so the number has to be 10 more than 30.

30+ 10 = m

m = 40

8 0

3 years ago

The function f(x) = square root -x is shown on the graph. Which statement is correct?

EastWind [94]

Answer:

The Domain of the graph is all real numbers less than or equal to 0.

4 0

3 years ago

Read 2 more answers

Final exam scores are normally distributed with a mean of 74 and a standard deviation of 6. Approximately, what percentage of fi

notka56 [123]

Answer:

81.86%

Step-by-step explanation:

We have been given that final exam scores are normally distributed with a mean of 74 and a standard deviation of 6.

First of all we will find z-score using z-score formula.

$z=\frac{x-\mu}{\sigma}$

$z=\frac{68-74}{6}$

$z=\frac{-6}{6}=-1$

Now let us find z-score for 86.

$z=\frac{86-74}{6}$

$z=\frac{12}{6}=2$

Now we will find P(-1<Z) which is probability that a random score would be greater than 68. We will find P(2>Z) which is probability that a random score would be less than 86.

Using normal distribution table we will get,

$P(-1$

$P(2>Z)=.97725$

We will use formula $P(a$ to find the probability to find that a normal variable lies between two values.

Upon substituting our given values in above formula we will get,

$P(-1$

Upon converting 0.81859 to percentage we will get

$0.81859*100=81.859\approx 81.86$

Therefore, 81.86% of final exam score will be between 68 and 86.

3 0

3 years ago