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2 years ago

Wich systems of equations would have NO solution? (Answer with work for branliest)

Mathematics

1 answer:

Ierofanga [76]2 years ago

5 0

for 1st

comparing value

3x+2=-3x-2

6x=-4

x=-4/6Have solution.

for 2nd.

y=-2x+10

both are equal So no solution.

3rd

y=-x+4

both are equal So no solution

4th

3x+y=8

3x+y=9

both are equal So no solution

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Divide 3 1/2 divided by 1 2/3

dybincka [34]

Answer:

2 1/10=

Answer: 2.1

Step-by-step explanation:

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3 years ago

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Need help with a math question

ale4655 [162]

Answer:

the coordinates of C' = (2,1)

Step-by-step explanation:

The coordinates of point C can be found by looking at the graph.

Coordinates of C are C= (6,3)

If ABCD is dilated by a factor of 1/3 then the coordinates of C' can be found by multiplying the coordinates of C by 1/3

C = (6,3)

C' =(1/3*6,1/3*3)

C' = (2,1)

So, the coordinates of C' = (2,1)

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3 years ago

Set A of six numbers has a standard deviation of 3 and set B of four numbers has a standard deviation of 5. Both sets of numbers

Alenkinab [10]

Given:

$\sigma_A=3$

$n_A=6$

$\sigma_B=5$

$n_B=4$

$\overline{x}_A=\overline{x}_B$

To find:

The variance. of combined set.

Solution:

Formula for variance is

$\sigma^2=\dfrac{\sum (x_i-\overline{x})^2}{n}$ ...(i)

Using (i), we get

$\sigma_A^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{n_A}$

$(3)^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$9=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$54=\sum (x_i-\overline{x}_A)^2$

Similarly,

$\sigma_B^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{n_B}$

$(5)^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$25=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$100=\sum (x_i-\overline{x}_B)^2$

Now, after combining both sets, we get

$\sigma^2=\dfrac{\sum (x_i-\overline{x}_A)^2+\sum (x_i-\overline{x}_B)^2}{n_A+n_B}$

$\sigma^2=\dfrac{54+100}{6+4}$

$\sigma^2=\dfrac{154}{10}$

$\sigma^2=15.4$

Therefore, the variance of combined set is 15.4.

7 0

2 years ago

Tell me quick and i will give thou brainliest

Anit [1.1K]

c, the answer is going by 3, so it is c.

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3 years ago

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What's the next answer in BADEHGJK

alina1380 [7]

BADEHGJK NM because it's going backwards and then it skips a letter

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3 years ago