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3 years ago

What is (2.1) ⋅ (4.7) and why?

Mathematics

2 answers:

OverLord2011 [107]3 years ago

8 0

2.1 . 4.7 all u gatta do is put this into google

igomit [66]3 years ago

6 0

bcs in (2.1).(4.7), the middle one dot means multiplication.so we have to multiply.

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Slope is 2: y intercept is 7

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3 years ago

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Find the distance between the points (4,-2) and (0,10)

vagabundo [1.1K]

We can solve this problem by using the distance formula. The distance formula is: $\sqrt{(x_{1}-x)^{2} + (y_{1} - y)^{2}}$ We can now put in values and solve.

$\sqrt{(4-0)^{2} + (-2-10)^{2}}$

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3 years ago

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alexira [117]

Answer:

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Step-by-step explanation:

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8 0

3 years ago

Plz help me 75 points for the 2 questions!!!

liraira [26]

Answer:

The system of equations:

2x + 7y = -11
3x + 5y = -22

Solve by elimination.

Triple the first equation, double the second one, subtract the second from the first and solve for y:

3(2x + 7y) - 2(3x + 5y) = 3(-11) - 2(-22)
6x + 21y - 6x - 10y = -33 + 44
11y = 11
y = 1

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2x + 7*1 = -11
2x = -11 - 7
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x = -9

The solution is:

x = -9, y = 1

Simplifying in steps:

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8u - 29 > - 9 + 12u
12u - 8u < -29 + 9
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3 0

3 years ago

Find the Sum/Difference of the following integers. 1. -2 + 9 =

Fantom [35]

Answer:

1. 7

2. -20

3. 1

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6. 5

7. 1

8. -1

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10. 1

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3 years ago