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3 years ago

Need helppppppppppppp plezzzzzzzzzzzzzzzz

Mathematics

2 answers:

nalin [4]3 years ago

6 0

Answer:

Step-by-step explanation:

only bc there is multi solutions in this one equation

Vilka [71]3 years ago

5 0

Answer:

Step-by-step explanation:

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the difference between seven times one number and three times a second number is 25. The sum of twice the first and five times t

inysia [295]

$\left \{ {{7*x - 3*y=25} \atop {2*x + 5*y=95}} \right.$

$\left \{ {{7x - 3y=25}(I) \atop {2x + 5y=95}(II)} \right.$

$\left \{ {{7x - 3y=25}simplify*(5) \atop {2x + 5y=95}simplify*(3)} \right.$

$\left \{ {{35x - \diagup\!\!\!\! 15 y=125} \atop {6x + \diagup\!\!\!\! 15y=285}} \right.$

$\left \{ {{35x =125} \atop {6x =285}} \right.$

$41x = 410$

$\boxed{x=10}$

Replace the value of "x" in the second equation (II) to find the value of "y", thus:
 $2x + 5y=95$
$2*(10)+5y = 95$
$20+5y=95$
$5y=95-20$
$5y=75$
$y = \frac{75}{5}$
$\boxed{y=15}$

The numbers (10,15)

5 0

3 years ago

Use the Substitution method to solve the system of equations 3x+4y=10 y=x-1

kifflom [539]

Answer: 2

Step-by-step explanation:

3x+4y=10

3x+4(x-1)=10

3x+4x-4=10

7x-4=10

Add 4 to both sides

7x=14

x=2

5 0

2 years ago

Please Help Find the circumferences of of both circles to the nearest hundredth.

torisob [31]

Step-by-step explanation:

small circle

C= pi D

C = 3.1415(9)

C= 28.3 ft

large circle

C= 2(3.1415)(7)

C = 44 ft

Add 28.3 + 44 = 72.3 ft

7 0

3 years ago

Solve using the correct order of operation 5x(11 x 9 + 7squared) + 4

laila [671]

Answer:

i love you :)

Step-by-step explanation:

5 × ( 99 + 7² ) + 4

5 × ( 148 ) + 4

740 + 4

744

6 0

2 years ago

Draw a quardrilateral that is not a rectangle describe your shape and explain why it is not a rectangle

arsen [322]

I would draw a trapezoid.

Trapezoids are quadrilaterals with one pair of parallel lines, not two. A rectangle has two pairs of parallel lines and is congruent. Therefore, it is not a rectangle.

Hope this helps... mark as Brainliest plz

5 0

3 years ago