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slamgirl [31]
3 years ago
14

Urgent please help .On a piece of graph paper, graph y+2<-2/3x+4

Mathematics
1 answer:
Serjik [45]3 years ago
8 0
Take a look at the function y+2=- \frac{2}{3}x+4. You can simplify it to y=- \frac{2}{3}x+2. If x=0, then y=2 and when y=0, x=3. You obtain two points (0,2) and (3,0) that lie on the line y+2=- \frac{2}{3}x+4.

Since y+2\le - \frac{2}{3}x+4, the line y+2=- \frac{2}{3}x+4 should belong to the shaded area. 

Now take point (0,0). Since 0+2\le- \frac{2}{3}\cdot 0+4, you can conclude that point (0,0) belongs to the shaded area.Using all these thoughts, you can make a conclusion that the correct choice is B.



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aliina [53]

Answer:

28

Step-by-step explanation:

KARLEE HAS 4 PENCIL PACKS.

<h3>1 PENCIL = 1/7 of pack.</h3>

∴ 1 pack has 1/7 multiplied by X.

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6 0
3 years ago
Read 2 more answers
Pls help I’m really confused How are vertical
skad [1K]
Vertical angles:
Vertical Angles are the angles opposite each other when two lines cross.
https://www.mathsisfun.com/geometry/vertical-angles.html
The link has a visual of vertical angles.

Adjacent Angles:
Adjacent angles are two angles that share a common vertex point and a common side. They basically sit right next to each other.
https://www.mathsisfun.com/geometry/adjacent-angles.html
The link has a visual of adjacent angles.

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7 0
3 years ago
6.8 Use the Normal approximation. Suppose we toss a fair coin 100 times. Use the Normal approximation to find the probability th
Maru [420]

Answer:

(a) The probability that proportion of heads is between 0.30 and 0.70 is 1.

(b) The probability that proportion of heads is between 0.40 and 0.65 is 0.9759.

Step-by-step explanation:

Let <em>X</em> = number of heads.

The probability that a head occurs in a toss of a coin is, <em>p</em> = 0.50.

The coin was tossed <em>n</em> = 100 times.

A random toss's result is independent of the other tosses.

The random variable <em>X</em> follows a Binomial distribution with parameters n = 100 and <em>p</em> = 0.50.

But the sample selected is too large and the probability of success is 0.50.

So a Normal approximation to binomial can be applied to approximate the distribution of \hat p<em> </em>(sample proportion of <em>X</em>) if the following conditions are satisfied:

  1. np ≥ 10
  2. n(1 - p) ≥ 10

Check the conditions as follows:

 np=100\times 0.50=50>10\\n(1-p)=100\times (1-0.50)=50>10

Thus, a Normal approximation to binomial can be applied.

So,  \hat p\sim N(p,\ \frac{p(1-p)}{n})

\mu_{p}=p=0.50\\\sigma_{p}=\sqrt{\frac{p(1-p)}{n}}=0.05

(a)

Compute the probability that proportion of heads is between 0.30 and 0.70 as follows:

P(0.30

                              =P(-4

Thus, the probability that proportion of heads is between 0.30 and 0.70 is 1.

(b)

Compute the probability that proportion of heads is between 0.40 and 0.65 as follows:

P(0.40

                              =P(-2

Thus, the probability that proportion of heads is between 0.40 and 0.65 is 0.9759.

6 0
3 years ago
In the figure below the y-axis points north, the x-axis points east, and the xy-plane corresponds to the surface of the water. S
Sergeeva-Olga [200]
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4 0
3 years ago
Can someone help me please?
11111nata11111 [884]
C) 3 ounces

4 × 5 3/4 = 23

the total weight of the snack mix before the cheese puffs were added was 20 ounces. so 23 - 20 = 3 ounces.
3 0
3 years ago
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