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ELEN [110]
3 years ago
7

Simplify 4(x+2)-3(7+y)

Mathematics
1 answer:
strojnjashka [21]3 years ago
4 0

Use distributive property <em>a(b + c) = ab + ac</em>

4(x + 2) - 3(7 + y) = (4)(x) + (4)(2) + (-3)(7) + (-3)(y)

= 4x + 8 - 21 - 3y = 4x - 3y - 13

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The equations of four lines are given. Identify which lines are perpendicular.
erma4kov [3.2K]

Answer:

Line 2 and Line 4 are perpendicular

Step-by-step explanation:

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3 0
2 years ago
The sector of a circle with a 12-inch radius has a central angle measure of 60°. What is the exact area of the sector in terms o
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3 0
3 years ago
Suppose a normal distribution has a mean of 222 and a standard deviation of 16. What is the probability that a data value is bet
valentina_108 [34]
Mean of the distribution = u = 222
Standard Deviation = s = 16

We have to find the probability that a value lies between 190 and 230.

First we need to convert these data values to z score.

z= \frac{x-u}{s}

For x = 190, 
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For x = 230
z= \frac{230-222}{16}=0.5

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From standard z table, we can find and use these values.

P(-2 < x < 0.5 ) = 0.6915 - 0.0228 = 0.6687

Thus, there is 0.6887 probability that the data value will lie between 190 and 230 for the given distribution. 

5 0
3 years ago
I need help!!!!!!!!!!!!!!?!!!
vesna_86 [32]
In Quadrant I, sin(sin^-1(x)) = x.

The appropriate choice is
  B. \dfrac{\sqrt{3}}{2}
6 0
3 years ago
24*8+4(4-2)22+3*7-222​
PIT_PIT [208]

Answer:

hello mate..how dy a?

Step-by-step explanation:

answer is -67

8 0
2 years ago
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