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Rasek [7]
1 year ago
14

What is the range for y=x^2-7x-8 ?

Mathematics
1 answer:
gtnhenbr [62]1 year ago
7 0

Answer:

[-20.25;+∞).

Step-by-step explanation:

1) according to the properties of the given parabola the minimum is:

x_0=-\frac{-7}{2}=3.5; \ y_0=-20.25;

2) y₀=-20.25 means, the value -20.25 is minimum of the range, the maximum →+∞;

3) finally, the range y≥-20.25.

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There are four boys and eight girls in a class. The teacher randomly selects three different students to answer questions. The f
umka21 [38]

The probability of the given condition is 28/165.

Given that, there are four boys and eight girls in a class.

We need to find the probability of the given question.

<h3>What is probability?</h3>

The probability is defined as the chances of happening of any random event or the possibility of happening of any event is called the probability.

The teacher randomly selects three different students to answer questions.

The first is the student is a girl, the second student is a boy, and the third student is a girl.

The total number of students=12, the number of boys=4 and the number of girls=8.

Now,

Step 1: The first student is a girl=8/12

Step 2: The second student is a boy=4/11

Step 3: The third student is a girl=7/10

In the first step, you select one of 8 girls among 12 students.

In the second step, you select one of 4 boys among the remaining 11 students.

In the third step, you select one of the remaining 7 girls among the remaining 10 students.

Thus, probability=(8/12)×(4/11)×(7/10)=28/165

Therefore, the probability of the given condition is 28/165.

To know more about probability visit:

brainly.com/question/24756209

#SPJ1

4 0
10 months ago
What would -9 1/2 be as a decimal?
Kamila [148]
-9.5 because 1/2 simplifies to .5 and 9 is the whole number 
3 0
3 years ago
Read 2 more answers
Annika is selling art prints at a comic convention.The convention charged her $50 for her table space, and she is selling her pr
asambeis [7]
If she wants to make 130.00, she should sell 90 prints. She is charged at first so she starts at -$50.00. And I don’t understand the first question.
5 0
3 years ago
What is the area of the following figure:
xenn [34]

Answer:

180cm^2

Step-by-step explanation:

split it into 2 different triangles one is 24 x 4 and the other is 24 x 11 then add them together

24 x 4 is 96/2 is 48

24 x 11 is 264/2 is 132

add 48 + 132 to get an answer of 180 cm^2

if anything doesnt seem right just comment and i will try and figure out what has gone wrong

hope this helps :)

4 0
3 years ago
No dia da festança, bianca comprou dos pasteis por $5,20, duas maçãs do amor por $ 3,40 e dois refrigerantes por $7,60. Quanto b
atroni [7]

Responder:

$ 16,2

Explicação passo a passo:

No dia da festa, Bianca comprou os pastéis por US $ 5,20, duas maçãs do amor por US $ 3,40 e dois refrigerantes por US $ 7,60. Quanto bianca você gastou?

O valor gasto por Bianca é a soma de todos os itens que ela comprou:

Pastelaria = $ 5,20

Maçãs do amor = $ 3,40

Refrigerantes = $ 7,60

A soma da soma dá o valor gasto de Bianca:

Doces + Maçãs do Amor + Refrigerante

$ (5,20 + 3,40 + 7,60)

= $ 16,2

5 0
3 years ago
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