5(-7)+9(4) I am confused on this problem

Mathematics

2 answers:

amm18123 years ago

5 0

Answer:

the answer is 1

Step-by-step explanation:

Rama09 [41]3 years ago

4 0

Answer:

It's really easy, just need to multiply and add the symbol of the multiplication, the answer is: 1

-35+36=1

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Twenty-five cards are numbered from 1 to 25 and placed in a box. One card is selected at random and not replaced. Another card i

LuckyWell [14K]

Answer:

11/50

Step-by-step explanation:

In draw 1,

Favourable outcome / Total number of possibilities = 12/25

In draw 2,

Favourable outcome / Total number of possibilities = 11/24

Total chance of getting 2 even numbered cards = 12/25 * 11/24 = 11/50

6 0

4 years ago

Can someone help please ? Thanks I’m advance

Pani-rosa [81]

Answer:

f(-3) = 16

Step-by-step explanation:

Given:

f(x) = 2x² + x + 1

Required:

f(-3)

Solution:

Substitute x = -3 into f(x) = 2x² + x + 1

f(-3) = 2(-3)² + (-3) + 1

f(-3) = 2*9 - 3 + 1

f(-3) = 18 - 3 + 1

f(-3) = 16

6 0

3 years ago

Learning Task 1. Tell whether each picture models a quadratic function or not.

Lostsunrise [7]

The picture for this question is given below.

Answer: All of them models quadratic function.

Step-by-step explanation: A quadratic function is of the form

f(x) = ax² + bx + c, with coefficient a≠0.

This function has a U-shape graphic called parabola. It has a vertex, i.e., a point where the curve changes, which is "classified" as minimum, if the parabola opens up; and as maximum, if the parabola opens down.

The y-intercepts are the points where the curve touches the y-axis and x-intercepts, if they exist, are the roots of the function.

The three pictures below shows three U-shaped curves opening down. This means the three parabolas are representation of 3 different quadratic functions, with a 3 vertex points that are maximum.