1 year ago

I need help with this one

Mathematics

2 answers:

Bas_tet [7]1 year ago

6 0

Answer:

Step-by-step explanation:

i believe the missing digit must be less than 5

faust18 [17]1 year ago

3 0

Answer:

Step-by-step explanation:

The missing digit must be less than 5

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3x+2y=23<br> 1/2x-4=y<br><br> What should I do for this one...? I dont really understand

Hitman42 [59]

Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.

$3x+2(1/2x-4)=23\\$

Distribute

$3x+x-8=23$

Combine like terms

$4x-8=23$

Add 8 to both sides

$4x=31$

Divide by 4

and $x=31/4$

Plug this value in for x

$31/4*1/2-4=y$

Simplify

$31/8-4=y$

Multiply everything by 8 and simplify

$31-32=8y\\-1=8y$

Divide.....

$y=-1/8$

Your answers are:

$y=-1/8\\x=31/4$

8 0

2 years ago

This lesson is almost ⅔ over. Express this number as a decimal.

MissTica

Answer:

0.66666667

Step-by-step explanation:

7 0

2 years ago

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Prime numbers less than 50

SVETLANKA909090 [29]

Answer:

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,83,89,97

Step-by-step explanation:

those are the prime numbers

3 0

1 year ago

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A skateboard is originally priced at $130. The online retailer gives a discount and the skateboard is now priced at $78. Enter t

Zinaida [17]

Answer:40%

Step-by-step explanation:

3 0

2 years ago

Pls help if u know math

Minchanka [31]

Answer:

x = 4

y = 11

Step-by-step explanation:

Set your formula as follow:

2x+3=3x-1 -> 2x+3-3x=-1 -> -x+3 = -1 -> -x=-4 -> x=4

now substitute x for 4 in the following

y-2=2(4)+1 -> y-2=8+1 ->y-2 = 9y -> y=11

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2 years ago

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