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3 years ago

(-30(-7))-(210(-3))=

Mathematics

2 answers:

Vlad [161]3 years ago

3 0

Answer:

840

Step-by-step explanation:

(−30)(−7) − (210)(−3)

=210 − (210)(−3)

=210 − (−630)

=840

Hope this helps!

brainliest?

padilas [110]3 years ago

3 0

Answer:

$→( - 30( - 7)) - (210( - 3)) \\ = (210) - ( - 630) \\ = 210 + 630 \\ = \boxed{840}✓$

840 is the right answer.

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It's an equilateral triangle, therefore

AB = BC = BA

We have the equation:

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Read 2 more answers

Find two numbers whos diffrence is 16 and the product is 720

antiseptic1488 [7]

Answer:

the numbers who's difference is 16 and the product is 720 is

36 &20

Explanation:

to finding numbers you have to express the equation in a quadratic equation then Factor it.

since the two numbers have a difference of 16 you can say that the first number is x and the second number is x -16 then their product is 720.

x(x-16)=720

x²-16x=720

x²-16x-720=0

(x-36)(x+20)

there are two possible value of x but since you are looking for the positive value of x, choose the positive value of x the first number is 20.

To find the second number

x-16=20

x=20+16

x=36

the second number is 36

Now to check

36-20=16

20*36=720

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