3 years ago

I need some help with these, I would appreciate it.

Mathematics

1 answer:

Anni [7]3 years ago

6 0

The first one I think is B

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What is the domain of the function (-1,1) (0,0) (1,2)

Butoxors [25]

Answer:

Domain: {-1 , 0 , 1}

Step-by-step explanation:

function (-1,1) (0,0) (1,2)

Domain is a set of x -values

so domain: {-1 , 0 , 1}

4 0

3 years ago

Zelda makes herbal teas to sell. Her most popular blend is a combination of 2 kinds of mint, 50% spearmint and 50% peppermint, b

lilavasa [31]

Answer:

B. $4.23

Step-by-step explanation:

<em>Refer to attachment for full question</em>

80% of spearmint + 20% of peppermint =

0.8*$2.25 + 0.2*$2.75 =
$2.35

<u>Sale price is 1.8 times the cost:</u>

$2.35*1.8 = $4.23

Correct option is B

5 0

3 years ago

A^2+3a=7 Discriminant = _______________ Number of solutions for the quadratic equation = ________

NARA [144]

Answer:

2 distinct solutions

Step-by-step explanation:

discriminant is b²-4ac

b = 3

a = 1

c = -7

discriminant = 9-4(-7) = 9+28 = 37

7 0

3 years ago

Three out of four students in your class have brought in permission slips foe nest week field trip. there are 32 students in the

Monica [59]

You calculate it as follows:

3/4 X 32/1

= 7

3 0

4 years ago

4. Which of the following expressions represents the perimeter of the figure below?

Alexxx [7]

<h2>Explanation:</h2><h2 />

Hello! Remember you have to write complete questions in order to get good and exact answers. Here I'll help you assuming some things. First of all, for a two dimensional shape, the perimeter is defined as the distance around it. Suppose we have a rectangle whose dimensions are:

$l=4x+9 \\ \\ w=2x-19 \\ \\ \\ l:Length \\ \\ w:Width \\ \\ \\ \text{So the perimeter is:} \\ \\ P=2l+2w \\ \\ P=2(4x+9)+2(x-19) \\ \\ P=8x+18+2x-38 \\ \\ P=(8x+2x)+(18-38) \\ \\ \boxed{P=10x-20}$

So in this context:

Correct option is D. 10x - 20

8 0

4 years ago