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3 years ago

Prove that congruent triangles have congruent corresponding altitudes. I NEED ANSWER ASAP PLZZZZZZZZZZZZZZZZZZZZZ

1 answer:

Nutka1998 [239]3 years ago

8 0

Corresponding altitudes are corresponding parts. They are congruent because ... Corresponding parts of congruent triangles are congruent. (CPCTC)

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For which values of k does the system of linear equations have zero, one, or an infinite number of solutions? [Note: not all thr

viktelen [127]

Answer:

The system has an infinite solution at k = 6, otherwise for any value of k, it has zero solution.

Step-by-step explanation:

Consider the system of linear equations:

$3x_{1} -x_{2}=2\;\;\;\;\;\;(1)\\ 9x_{1} -3x_{2}=k\;\;\;\;\;(2)$

The system of linear equations can have zero, one, or an infinite number of solutions:

simplify equation (1):

$x_{2}=3x_{1} -2$

substitute in equation (2), we get

$9x_{1} -3(3x_{1}-2)=k\\9x_{1} -9x_{1}+6=k\\0+6=k$

we cannot find the value of $x_{1}$ and $x_{2}$ .

so, there is no solution.

Multiply the equation (1) with 3 and put k is 6,

$3(3x_{1} -x_{2})=3\times2\\9x_{1} -3x_{2})=6$

it means both equations are overlapped. Then, the solution has infinite solutions.

Hence, the system has an infinite solutions at k is 6 otherwise for any value of k it has no solution.

4 0

3 years ago

Please explain the steps

Gnesinka [82]

Answer:

X= -3,-5

Step-by-step explanation:

3 0

3 years ago

What is the slope between these two points?<br> (6,10) (8,3)

cricket20 [7]

Answer:

the slope of the two points is $-\frac{7}{2}$

Step-by-step explanation:

to find the slope of two points you have to subtract them (x1,y1), (x2,y2)

Steps:

$(X_1,Y_1) (X_2, Y_2)$

$\frac{3 - 10}{8 - 7} = -\frac{7}{2}$

8 0

3 years ago

help me with this please!!!!! members of a polling organization survey 700 of the 7,453 registered voters in a town by randomly

Yakvenalex [24]

Most likely not.

The reason behind this is that the random participants only include just under 10% of the population. This has the ability to oversee minority judgement.

Cluster sampling should be used. This splits the population up into groups. For instance, we could split it up by race and sample that way. Or split it up by net worth. Or occupation. Whatever works best for this survey!

Hope I helped!

8 0

3 years ago

Which of the following is the equation of a line that passes through the point (1,2) and is parallel to the x-axis?

kodGreya [7K]

Its A
hope it helps
and sorry about before

8 0

3 years ago