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4 years ago

Whats -3ab equal is a= -2 and b= -5?

Mathematics

1 answer:

mash [69]4 years ago

7 0

If a=-2 and b=-5, then -3ab= -30

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Which inequality represents the graph y>-4 over 5x plus 3

Ipatiy [6.2K]

Answer:

Step-by-step explanation:

So you would use rise over run so its 4/5 but its negative so you go 4 down and 5 right. So 4 down 5 right is equal to -4/5 which is your slope.

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3 years ago

The temperature dropped at a rate of -4.8 degrees per hour. If the temperature was 31 degrees at 10 am, what was the temperature

quester [9]

The temperature at 3 pm was 7 degrees.

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4 years ago

Can someone help me please

ANTONII [103]

9514 1404 393

Answer:

(a) 25°

Step-by-step explanation:

The angle marked 93° is the average of the arcs intercepted by the secant lines.

(161° +AD)/2 = 93°

161° +AD = 186° . . . . . multiply by 2

AD = 25° . . . . . . . . . . .subtract 161°

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3 years ago

Which of the following equations has infinite solution?

Murrr4er [49]

A) $1/5x + 10 = 2(1/10x+20) =$ no solution

B) $1/4x - 2 = -1/2(4-1/2x) =$ infinite solutions

C) $1/3x + 12 =5(1/3x +12) =$ x = -36

D) $1/2x - 6= - 1/5(30 -10x) =$ x = 0

$\fbox {B)}$ has infinite solutions, which is your answer.

5 0

4 years ago

Which integral gives the area of the region in the first quadrant bounded by the graphs of y2 = x − 1, x = 0, y = 0, and y = 2?

Zarrin [17]

Interesting that only integrals along the $x$ -axis are suggested when integrating along the $y$ -axis would be much simpler... Anyway, you have to split the interval of integration into two. The "height" of the region is not uniform over the entire interval.

When $y=0$ , we have $0^2=x-1\implies x=1$ . When $y=2$ , we have $2^2=x-1\implies x=5$ . Then the area we want is given by

$\displaystyle\int_0^12\,\mathrm dx+\int_1^52-\sqrt{x-1}\,\mathrm dx$

which seems to agree with the last option.

5 0

3 years ago