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nasty-shy [4]
3 years ago
6

What is cramers rule.

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

Cramer's Rule is a method that uses determinants to solve systems of equations that have the same number of equations as variables

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Question 19 Please ASAP
algol13

Answer:

D

Step-by-step explanation:

fastest way to find out the answer is to replace each solution with the xs of the equation and see if it is Equal to 4. the only solution that is equal to 4 is D)1/3

4 0
3 years ago
The figure shows the location of three points around a lake. The length of the lake, BC, is also shown.
Anastaziya [24]
A right triangle ABC is formed when we join three points around a lake.
Length of the side AC = 6 miles.
Length of the side BC = 2 miles.
We have to find Length of side AB.
Using Pythagorean theorem for Right triangle ABC , Right angled at B
→AB² + BC²= AC²
→ AB² + 2²= 6²
→ AB² = 36 - 4
→ AB²= 32
→ AB = √ 32
→→AB = 5.66 (approx)
Option (B) AB = 5.66 is Right choice.
7 0
2 years ago
Read 2 more answers
An angel is 5 times its supplement find the measure of bith angels
AnnZ [28]
Now, supplementary angles sum up to 180°.

so hmmm say one has a measure of a°, and her sibling is 5 times larger, or 5 times that much, or 5a°, we know that both will sum up to 180°, thus

\bf a+5a=180\implies 6a=180\implies a=\cfrac{180}{6}\implies a=30

so, the smaller is that much, and her sibling is 5a, and you know how much that is, unless you mean angels, and  hmmmm both have wings and feathers and are wearing a gown, but doubt that's the case.
3 0
3 years ago
Will mark brainliest!!
wlad13 [49]
<span>Solve the system

9x = 27-9y
20x=71-9y

Let's use the "elimination through addition/subtraction method.
Multiply the first equation by -1 so as to obtain +9y:

-9x = -27 + 9y
</span><span>20x=  71-   9y
--------------------

Add these 2 equations together:

</span>-9x = -27 + 9y
20x=  71-   9y
--------------------
<span> 11x = 44

Solve this for x:  x = 44/11 = 4.

Now find y by subst. 4 for x in either of the original equations.

Using the second equation:    </span><span> 

</span>20x=71-9y
20(4) = 71 - 9y
80-71 = -9y
9 = -9y.  Then y = -1.

The solution set is (4,-1).
7 0
3 years ago
{(7,4),(6,3),(5,3)}<br>function?<br>Explain​
poizon [28]

Yes it is a function because there are not any repeating x values ( first number in each set of parentheses)

8 0
3 years ago
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