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2 years ago

5(y + 6) + 2y < 4(y+2)

Mathematics

2 answers:

valina [46]2 years ago

4 0

5y+30+2y<4y+8
5y+2y-4y<8-30
3y<-22
y<-22/3

Dima020 [189]2 years ago

3 0

Is the question to simplify the equation?

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2x2 – 9x + 2 = –1

Reika [66]

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

Discriminant

$b^2-4ac\quad\textsf{when}\:ax^2+bx+c=0$

$\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}$

$\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}$

$\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}$

$2x^2-9x+2=-1$

$\implies 2x^2-9x+3=0$

$\implies a=2, b=-9, c=3$

$\begin{aligned}b^2-4ac &=(-9)^2-4(2)(3)\\& =81-24\\&=57 > 0\implies \textsf{two real roots}\end{aligned}$

5 0

2 years ago

How many trees are in the field

DiKsa [7]

Idk there is nothing to look at

3 0

2 years ago

Which has the same solution as 2(x+4)= -7 -3x

Butoxors [25]

I hope this helps you

2x+8= -7-3x

5x= -15

x= -3

7 0

2 years ago

Red and grey bricks were used to build a decorative wall. The number of red bricks/number of grey bricks was 5/2. There were 140

Airida [17]

To find the number of red bricks used, you can create a part to part to whole ratio from the simple ratio of red to grey brick they give.

Then, use the total to create an equivalent ratio with the actual total number of bricks (140).

5 red 100 red
2 grey = 40 grey
7 total 140 total

Each time, the simple ratio was multiplied by 20 to get the actual totals for each color.

There were 100 red bricks used.

6 0

2 years ago

The product of r and s

Mekhanik [1.2K]

Product means to multiple so I think it's rs

6 0

2 years ago

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