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uysha [10]
3 years ago
12

How many solution does the system have 6y+5x=8;2.5x+3y=4

Mathematics
1 answer:
mote1985 [20]3 years ago
6 0
Solve by Elimination:
6y+5x=8
2.5x+3y=4
Multiply the second equations by 2:
5x+6y=8

we know see that both equations are the same line, this means that there is an infinite amount of solutions to the equation

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Which of the following options have the same value as
Keith_Richards [23]

Question:

Which of the following options have the same value as 65% of 20?

Choose 2 answers:

(A) 0.65⋅20

(B) 65/100 divided by 20

(C) 65/20 * 100

(D) 65 * 20

Answer:

Option A has the same value as  65% of 20

Step-by-step explanation:

Let x be the value of  65% of 20

x = 65\% of 20

x = \frac{65}{100} \times 20

x =0.65 \times 20

x =13

Thus 65% of 20 is 13

Now ,

<u>Solving Option A</u>

=> (0.65) \cdot (20)

=> 13

<u>Solving Option B</u>

=> 65/100 divided by 20

=>\frac{\frac{65}{100}}{20}

=>\frac{0.65}{20}

=>0.0325

<u>Solving Option C</u>

=>65/20 * 100

=>\frac{65}{20} \times 100

=>3.25 \times 100

=>325

<u>Solving Option D</u>

=> 65 * 20

=>65 \times 20

=> 1300

8 0
3 years ago
Read 2 more answers
Will Mark Brainliest
Mademuasel [1]

we are given with the data of a parabola with vertex at (2, 2) and directrix at y  = 2.5. the formua should be ax^2 + b x + c = y because of the directrix. 

(x-h)^2 = 4a (y-k)

(x-2)^2 =4a (y-2) 

a is the equidistant distance from focus to vertex and from vertex to directrix that is equal to -0.5

then the  answer is 

(x-2)^2 =-0.5*4 (y-2) 

x2 - 4x + 4 = -2y +4

x2-4x+2y = 0

answer is C

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3 years ago
Find the slope of the line through the points -12, 10 and -9,-15
Pavlova-9 [17]

Answer:

-25/3

Step-by-step explanation:

7 0
3 years ago
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Friday night's football game was attended by 420 students. This is about 60 % of the school's population. What
Rainbow [258]

Answer:

the answer is 672

Step-by-step explanation:

420 × 60% = 252

420 + 252=672

625 is the total number of learners

3 0
3 years ago
The area of a square ice rink is 405 yards. To the nearest yard, what is the perimeter of the rink?
nasty-shy [4]

Answer:

D. 80 yards

Step-by-step explanation:

i am 99% sure

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