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Fynjy0 [20]
3 years ago
6

Guess the riddle!!!!

Mathematics
2 answers:
Nataly [62]3 years ago
3 0
10 animals would be going to the river
Masja [62]3 years ago
3 0

Answer: 10 animals would be going to the river

Step-by-step explanation:

Took the test

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Find all solutions of the given system of equations (If the system is infinite many solution, express your answer in terms of x)
lisov135 [29]

Answer:

(a) The system of the equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. has no solution.

(b) The system of the equations \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. has many solutions y=\frac{2x}{3}-\frac{5}{3}

Step-by-step explanation:

(a) To find the solutions of the following system of equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. you must:

Multiply 2x-3y=3 by 2:

\begin{bmatrix}4x-6y=6\\ 4x-6y=3\end{bmatrix}

Subtract the equations

4x-6y=3\\-\\4x-6y=6\\------\\0=-3

0 = -3 is false, therefore the system of the equations has no solution.

(b) To find the solutions of the system \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. you must:

Isolate x for 4x-6y=10

x=\frac{5+3y}{2}

Substitute x=\frac{5+3y}{2} into the second equation

16\cdot \frac{5+3y}{2}-24y=40\\8\left(3y+5\right)-24y=40\\24y+40-24y=40\\40=40

The system has many solutions.

Isolate y for 4x-6y=10

y=\frac{2x}{3}-\frac{5}{3}

3 0
3 years ago
A dress shop bought material for £4.65 a metre and sold it for £6.90 a metre. How much
stepladder [879]

Answer:

  £67.50

Step-by-step explanation:

On each metre of material, the shop makes a profit of ...

  £6.90 -4.65 = £2.25

So, for 30 metres, the profit will total ...

  30 × £2.25 = £67.50

A profit of £67.50 would be made on a 30-metre roll of material.

8 0
3 years ago
Plzzz help its a math question
Step2247 [10]
Ur answer is -4......    
7 0
3 years ago
Read 2 more answers
Colin’s piano lesson is 45 minutes, or 3/4 of an hour, long. If he practices 6 different songs and spends an equal amount of tim
frosja888 [35]

Answer: \frac{1}{8} hour

Step-by-step explanation:

Given: The total time Collin spent on 6 songs =\frac{3}{4}\text{ hour}

Now, the fraction of an hour does he spend practicing each song is given by :-

\frac{\text{Total time taken}}{\text{Total songs}}=\frac{\frac{3}{4}}{6}=\frac{3}{4\times6}=\frac{1}{8}\text{hour}

The fraction of an hour does he spend practicing each song=\frac{1}{8}

5 0
3 years ago
Read 2 more answers
5p - 14 = 8p + 4<br><br> Explain
grigory [225]
1: we bring all the x to one member, changing its sign (I use x, consider it a p)
5x - 8x - 14 =  + 4

2 we bring all the non-x to the other member
5x - 8x =  + 14 + 4
3 we solve the members
(5 - 8)x =  - 3x
( + 14 + 4) =  + 18
4 we divide 18 by -3
- 3x =  + 18
x = 18 \div  - 3
18 \div  - 3 =  - 5
x =  - 5
my English is so bad lol
5 0
3 years ago
Read 2 more answers
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