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2 years ago

Solve the 5 questions. I beg you T_T (90 points!!!)

Mathematics

2 answers:

jok3333 [9.3K]2 years ago

5 0

Answer:

a c a b

Step-by-step explanation:

soldi70 [24.7K]2 years ago

5 0

Answer:

$3x-3y=6\\-x+y=-2$

Consistent and Dependent

$x+y=0\\-x+y=-8$

Consistent and Independent

10)

$x+y=0\\-x+y=-8$

Inconsistent

11 ) (0, 3)

12) (-2, 1)

Step-by-step explanation:

Question 8

The slope-intercept equation of the line is: y = x - 2

Therefore, the correct set of equations is:

$3x-3y=6\\-x+y=-2$

Consistent and Dependent, as:

Same line
Infinite solutions

Question 9

The slope-intercept equation of the lines are:

y = x - 8 and y = -x

Therefore, the correct set of equations is:

$x+y=0\\-x+y=-8$

Consistent and Independent, as:

Intersects at 1 point
One solution

Question 10

The slope-intercept equation of the lines are:

y = -2x + 3 and y = -2x + 1

Therefore, the correct set of equations is:

$4x+2y=6\\4y=-8x+4$

Inconsistent

Parallel lines
No solutions

Question 11

Solution is where the two lines intersect:

Solution (0, 3)

Question 12

Solution is where the two lines intersect:

Solution (-2, 1)

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My family uses 3 cartons of milk a day . how many cartons did we use in january

tangare [24]

Answer:

93 cartons

Step-by-step explanation:

January-31

no of cartons-3 × 31=93

4 0

3 years ago

The valume of (3-5)4(2)-16+2

rusak2 [61]

Answer:

-30

Step-by-step explanation:

Calculate the difference:

(3-5)x4x2- 16 plus 2

Result: -2x4x2- 16 plus 2

calculate the product...

Result: -16-16 plus 2

Calculate the sum or difference

ANSWER: -30

8 0

3 years ago

Consider the population of all 1-gallon cans of dusty rose paint manufactured by a particular paint company. Suppose that a norm

Artemon [7]

Answer:

a) 0.5.

b) 0.8413

c) 0.8413

d) 0.6826

e) 0.9332

f) 1

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 6, \sigma = 0.2$

(a) P(x > 6) =

This is 1 subtracted by the pvalue of Z when X = 6. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{6-6}{0.2}$

$Z = 0$

$Z = 0$ has a pvalue of 0.5.

1 - 0.5 = 0.5.

(b) P(x < 6.2)=

This is the pvalue of Z when X = 6.2. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{6.2-6}{0.2}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413

(c) P(x ≤ 6.2) =

In the normal distribution, the probability of an exact value, for example, P(X = 6.2), is always zero, which means that P(x ≤ 6.2) = P(x < 6.2) = 0.8413.

(d) P(5.8 < x < 6.2) =

This is the pvalue of Z when X = 6.2 subtracted by the pvalue of Z when X 5.8.

X = 6.2

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{6.2-6}{0.2}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413

X = 5.8

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{5.8-6}{0.2}$