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3 years ago

Can someone please help

Mathematics

1 answer:

marin [14]3 years ago

5 0

Distribute the -2.5 to 4X and -3
It should look like -2.5 x 4X and -2.5 x -3(the answer for -3 should be positive)

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Question 7 of 10

solniwko [45]

Answer:

what may be true

Step-by-step explanation:

i just took the test and got the answer correct, i hope this helps.

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2 years ago

Find the percent of the number. explain your method 120%of 75

cupoosta [38]

I would use is over of equals percent over 100 is woudl be 120% and of would be 75 then you would put x over 75

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3 years ago

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Write a system of linear equations that has the ordered pair (1,4) as it's solition

Lemur [1.5K]

The required system of equations is $x+y=5\\x-y=-3$

Step-by-step explanation:

We need to write a system of linear equations that has the ordered pair (1,4) as it's solution.

It means we need to find system of linear equations, which after being solved gives x=1 and y=4

Let the system of equations be:

$x+y=5\\x-y=-3$

I have made equations such that adding x+y gives 5 i,e (1+4=5) and subtracting x-y gives -3 (1-4=-3)

Now solving this system of equations to find value of x:

$x+y=5\,\,eq(1)\\x-y=-3\,\,eq(2)$

Adding eq(1) and eq(2)

$x+y=5\\x-y=-3\\-----\\2x=2\\x=1$

Putting value of x=1 into eq(1) to find value of y

$x+y=5\\1+y=5\\y=5-1\\y=4$

The solution set after solving system of equations is (1,4).

The required system of equations is $x+y=5\\x-y=-3$

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

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3 years ago

What is a decimal equivalent for 2/5 and 40/100

Simora [160]

Answer:

For 2/5=0.4 For 40/100 is also 0.4

Step-by-step explanation:

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3 years ago

You find a deck of cards and know that the deck has too many clubs and spades in it. The deck has 59 cards.

Harrizon [31]

(13/59)(c/58)=117/1711

13c/3422=117/1711

13c=234

c=18

So there are 18 clubs instead of 13 meaning that there is an extra 5 clubs in the deck.

Since there were 59 cards, there was 7 extra cards in all. The 7 extra minus the 5 extra clubs leaves 2 extra spaces.

So there were two extra spades in the deck.

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3 years ago

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