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Travka [436]
3 years ago
8

Identify the vertex of the quadratic. Sketch the graph of the function.

Mathematics
2 answers:
lbvjy [14]3 years ago
8 0
The vertex is: (-2,3)
Greeley [361]3 years ago
3 0
(-2,3).yyyyyyyyyyyyyyyyyyyyyyyyyy
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Find the area:
ad-work [718]

Answer:

189.98

Step-by-step explanation:

6 0
3 years ago
Gabrielle's age is two times Mikhail's age. The sum of their ages is 21 . What is Mikhail's age?
kirza4 [7]

Answer:

Gabrielle is 14 and Mikhali is 7

7 0
3 years ago
Read 2 more answers
Mrs Wong bought a rice cooker for $126 after a discount of 30%.
jarptica [38.1K]

Answer:

(a) $180

(b) 25%

Step-by-step explanation:

(a) $126 = 30% of x; x is the total

so from this, you get an equation: 126 = 0.3x

solve the equation: x = 180; so the amount before

discount is $180

(b) You know the price of discount for the rice cooker is

180-126 which is $54

Then you subtract 54 from 64 to get the discount amount for the toaster

10/40 is 1/4 or 25%

3 0
3 years ago
Mel made a quesadilla. He cut 1/10 of the quesadilla to save for later. Mel then shared the remaining portion among himself and
devlian [24]

Answer:

1/3

Step-by-step explanation:

Mel made a quesadilla. He cut 1/10 of the quesadilla to save for later.

Let the whole portion of the quesadilla be represented as 10/10 = 1

The amount of quesadilla Mel left

= 1 - 1/10

= 9/10

Mel then shared the remaining portion among himself and 2 friends.

The amount if each portion that Mel and his friends got is calculated as:

9/10 ÷ 3 friends

= 9/10 × 1/3

= 3/10

Mel and his friends got 3/10 of the remaining quesadilla.

The fraction of the whole quesadilla(10/10) did each person get is calculated as:

10/10 × 3/10/9/10

= 3/10 ÷ 9/10

= 3/10 × 10/9

= 1/3

4 0
3 years ago
1. Suppose you have just received a shipment of 100 iPads where 7 iPads are defective. To determine whether or not you will acce
Lyrx [107]

Answer:

p(x\geq 1)=0.1975

Step-by-step explanation:

the probability that x iPads are defective in the sample follows a hypergeometric distribution, so it is calculated as:

p(x)=\frac{kCx*((N-k)C(n-x))}{NCn}

Where aCb=\frac{a!}{b!(a-b)!}

Because we have a N elements with k elements that are defective and we are going to take a sample of n elements. So, replacing N by 100, k by 7 and n by 3, we get:

p(x)=\frac{7Cx*((100-7)C(3-x))}{100C3}

Now, the probability of rejecting the shipment is the probability that at least one iPad of the sample is defective, so:

p(x\geq 1)=p(1)+p(2)+p(3)

Then:

p(1)=\frac{7C1*((100-7)C(3-1))}{100C3}=0.1852\\p(2)=\frac{7C2*((100-7)C(3-2))}{100C3}=0.0121\\p(3)=\frac{7C3*((100-7)C(3-3))}{100C3}=0.0002

Finally, the probability of rejecting the shipment is:

p(x\geq 1)=0.1852+0.0121+0.0002=0.1975

3 0
3 years ago
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