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bulgar [2K]
3 years ago
11

Evaluate 3a-4b×2 + (-2) when a=4, b=5, and c= -2

Mathematics
2 answers:
vichka [17]3 years ago
8 0
The answer is -18
I think.
Vinil7 [7]3 years ago
3 0
Pretty sure it's -30
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Really need need help on this please
Alexxx [7]

Answer:

\frac{7}{2}

Step-by-step explanation:

\frac{12-3y}{2} + y (\frac{2y-4}{y})

we substitute the value of "y" in the equation:

\frac{12-3(3)}{2} + 3 (\frac{2(3)-4}{3})\\\\\frac{12-9}{2} + 3 (\frac{6-4}{3})\\\\\frac{3}{2} + 3 (\frac{2}{3})\\\\\frac{3}{2} + 2\\\\\frac{7}{2}

3 0
3 years ago
The product of 5 and a number is at least 20
Natasha_Volkova [10]

this is the best thing i could find for you, good luck with your question,

5x is greater than or equal to -25

The product of 5 and a number is at least –25

we convert the given statement into inequality

product means multiplication

Let x be the unknown number

product of 5 and a number is 5x

5x is at least -25

For word at most we use <=

for word at least we use >=

So the expression becomes 5x <= -25

6 0
3 years ago
Question 2 of 10<br> Which describes the graph of y = (x-4)2 - 1?
WITCHER [35]

y=(x-4)^2-1:   y=-\frac{4}{5}

Sure hope this helps you

y = -4/5

4 0
2 years ago
I WILL MARK BRAINIEST <br> Give the arrow notation for a 270° rotation
Lelechka [254]

Convert from degrees to radians using the ratio  

π/180.  3aπ/2   radians

is this what you need?

or 90 degress

3 0
3 years ago
If x+y = -1, and xy= -12, what is the value of (x+3) (y+3) ?
9966 [12]

Answer:

Here are my hints. You can solve it yourself

1/ xy = -12      -->      x = -12/y

2/ (-12/y) + y = -1      -->     -(12/y) + (y²/y) = -1    -->    -12 + y² = -y   -->    y²+y-12=0

3/ From y²+y-12=0 we can find y then use y to find x and then do your

(x+3) * (y+3)

7 0
4 years ago
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