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Basile [38]
2 years ago
6

6. Select the number of solutions for each system of two linear equations.

Mathematics
1 answer:
harkovskaia [24]2 years ago
3 0

Answer:

0 , 1 or infinitely many solutions

Step-by-step explanation:

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Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d
zubka84 [21]
From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
x=170\\\\
There\ will\ be\ 170\ dogs\ for\ 300\ students.
5 0
3 years ago
Read 2 more answers
Drag a reason to each box to complete this proof.<br><br> If 12=13x+5 , then x = 21.
Ainat [17]
<span><span>I think the answers are:

Statement          Reason</span><span><span><span>  
<span>12=<span>13</span>x+5          </span></span>Given</span><span><span>  
<span>7=<span>13</span>x          </span></span>Subtraction Property of Equality</span><span><span> 
21 = x          </span>Multiplication Property of Equality</span><span><span> 
x = 21          </span><span>Symmetric Property of Equality 

By the way, I'm doing the same exam for Geometry as well. There's a lot of proof questions on there which I'm not good at doing for the reasoning part. If you finish the exam before I do, maybe you can message me what the answers are for some of the questions on there so I know if my answers for the questions are incorrect or not. 

Besides that, hope the answer above is correct for you. 

<em>~ ShadowXReaper069</em></span></span></span></span>
5 0
3 years ago
Read 2 more answers
Can y’all please help me
Andrew [12]

Answer:

Rly lazy man.....

Step-by-step explanation:

1/2*l*w is the area of triangle, plug in values...

1/2*4.5*6.6

14.85 square feet is the area

7 0
3 years ago
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Find the first three terms of the sequence below.<br> T, = n2 + 2n +9
NikAS [45]

Answer:

12, 17, 24

Step-by-step explanation:

To find the first 3 terms, substitute n = 1, 2, 3 into the rule, that is

T₁ = 1² + 2(1) + 9 = 1 + 2 + 9 = 12

T₂ = 2² + 2(2) + 9 = 4 + 4 + 9 = 17

T₃ = 3² + 2(3) + 9 = 9 + 6 + 9 = 24

7 0
3 years ago
Read 2 more answers
Show that xcosec^2x = cotx - d/dx xcotx
Mama L [17]

The given equation, x.cosec²x = cot x - d/dx x.cot x, is proved using the product rule of differentials.

In the question, we are asked to show that x.cosec²x = cot x - d/dx x.cot x.

To prove, we go by the right-hand side of the equation:

cot x - d/dx x.cot x.

We solve the differential d/dx using the product rule, according to which, d/dx uv = u. d/dx(v) + v. d/dx(u), where u and v are functions of x.

cot x - {x. d/dx(cot x) + cot x. d/dx(x)}

= cot x - {x. (-cosec²x) + cot x} {Since, d/dx(cot x) = -cosec²x, and d/dx(x) = 1}

= cot x + x. cosec²x - cot x

= x. cosec²x

= The left-hand side of the equation.

Thus, the given equation, x.cosec²x = cot x - d/dx x.cot x, is proved using the product rule of differentials.

Learn more about differentials at

brainly.com/question/14830750

#SPJ1

4 0
2 years ago
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