If -1 ≤ x ≤ 8 and -1 ≤ y ≤ 10, then what is the range of xy?

Answers

Answer 1

Answer:

Explanation:

the lower bound would be the smallest value xy could produce, which is smallest value of x times the largest value of y, -1 times 10 is -10. the upper bound would be the largest value of xy, which is the largest value of both variables, 8 times 10 is 80. hence the range of xy is -10<= xy <=80.

Related Questions

5 the power of b is 125, what will be 5 the power of b minus 3

Answers

5 the power of b which is 125 minus 3 is 122

three differnet golfers played

Answers

Answer:

Rory: 42 strokes per 9 holes

Jordan: 79 strokes per 18 holes

Ricky: 123 strokes per 27 holes

Explanation:

Answer:

nope

Explanation:

because nopeeeeeeeeeeeeeee lol lol lol lol lol

F(x)=x^2-b. In the function above? b is constant. If F(-2)=7, What is the value of F(b)?

Answers

Answer:

so substitute in -2 as x, first do the exponent -2 squared equals 4 then 4-?=7 the answer is -3

Explanation:

-3

A bag contains balls that are red, green, or blue. One third of the balls are red, and 2/7 are blue. The number of green balls is eight fewer than the twice the number of blue balls. How many green balls are in the bag?

Answers

Answer:

16 green balls

Explanation:

x = total balls in bag

Red = 1/3x

Blue = 2/7x

Green = -8+2(2/7x)

Since these are balls, the answers have to be whole numbers. The equations representing the different colors contain fractions and have denominators 3 and 7. So the total number of balls, represented by x, needs to be a factor of 3 and 7. So I did a trial and error thing here:

First possible common denominator = 21, which is 3x7

We test that there are 21 balls in the bag. Substituting 21 into the equations for red, blue and green we get:

red = 1/3(21) = 7

blue = 2/7(21) = 6

green = -8+2(2/7)(21) = 4

But if you add up the colors: 7+6+4 = 14 which is < 21

So we test another common denominator

Next possible common denominator = 42, which is 3x7x2

So we test that there are 42 balls in the bag. Substituting 42 into the equations for red, blue and green we get:

red = 1/3(42) = 14

blue = 2/7(42) = 12

green = -8+2(2/7)(42) = 16

If you add up the colors: 14+12+16 = 42

How can you test a water source to see whether it is acidic or not

Answers

Answer:

The easiest way to test if water is acidic is to use litmus paper. Litmus paper is a paper that contains special dyes that will change color when exposed to acids or bases. In your case, if you dip blue litmus paper into water samples and it turns pink or red, then the water is acidic.

Answer:

Okay mate

Explanation:

if f(x+1)=-1/2x+6, what is the value of f(-3)?

Answers

Answer:

Explanation:

If 3x + 8 = 23, what is the value of x + 4 ?

Answers

Answer:

Explanation:

First we solve for x. Subtracting 8 from both sides gives us 3x = 15, therefore x would be 5. Then we plug that into the second question, which gives us 5+4, which is 9.

X is 5
x+4 is the question
5+4= 9
the answer is 9

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