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3 years ago

Which expression has a positive value?

Mathematics

2 answers:

Vikki [24]3 years ago

3 0

Answer:

The answer is (-5)(-9).

Step-by-step explanation:

As you multiply 2 negative number together, it will equals to positive number :

(-5)×(-9) = 45

Elza [17]3 years ago

3 0

Answer:

(-5)(-9)

Step-by-step explanation:

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It's a math problem subtracting unlikely fractions 14 / 2 - 9 / 8

gavmur [86]

5 and 7/8 0r 47/8 :)

4 0

3 years ago

Read 2 more answers

The population P = P(t) of Helm, can be modeled by

MariettaO [177]

Answer:

A.) 0.0129 = k

B.) 2024

Step-by-step explanation:

A.)

267,000 = 250,300e^k5

267,000/250,300 = e^k5

1.0667 = e^k5

ln(1.0667) = lne^k5

ln(1.0667) = 5k

ln(1.0667)/5 = k

0.0129 = k

B.)

300,000 = 250,300^0.0129t

300,000/250,300 = e^0.0129t

1.1986 = e^0.0129t

ln(1.1986) = lne^0.0129t

ln(1.1986) = 0.0129t

ln(1.1986)/0.0129 = t

14.03 = t

so the year would be: 2024

7 0

3 years ago

15 point question

Natalka [10]

Answer:

It will cost $12.5 per person to charter a bus for 36 passengers

Step-by-step explanation:

The cost per person c of chartering a tour bus varies inversely as the number of passengers n.

We can write:

$c\:\alpha \:\frac{1}{n} \\c=\frac{k}{n}$

where k is constant of proportionality

We are given when c = 22.50, n = 20

We need to find c when n = 36

First using c = 22.50, n = 20 we will find k, the constant of proportionality

$c=\frac{k}{n}\\22.50=\frac{k}{20}\\k=22.50 \times 20\\k=450$

So, we get k = 450

Now, we will find c when n = 36

$c=\frac{k}{n}\\c=\frac{450}{36}\\c=12.5$

So, we get the value of c: c = 12.5

Therefore, It will cost $12.5 per person to charter a bus for 36 passengers

8 0

3 years ago

Which of the following ordered pairs make this equation true? Y = 2x - 7 A. (1,9) B. (-3, 4) C. (4,1) D. (-1, 5)

gregori [183]

Answer:

(4,1)

Step-by-step explanation:

Using substitution you can determine that 2*4-7 is in fact equal to 1

3 0

3 years ago

Assume: Triangle CDE is a right triangle and Angle D is a right angle. What is the length of the missing side? A) 26 . B) 25 . C

kramer

Answer:

Length of base DE = 24 units

Step-by-step explanation:

Given:

In given triangle, right angle at D

SO,

Perpendicular of given triangle = 32 unit

Hypotenuse of given triangle = 40 unit

Find:

Length of base DE

Computation:

Using Pythagoras theorem

Base = √Hypotenuse² - Perpendicular²

Length of base DE = √Hypotenuse of given triangle² - Perpendicular of given triangle²

Length of base DE = √40² - 32²

Length of base DE = √1,600 - 1,024

Length of base DE = √576

Length of base DE = 24 units

6 0

3 years ago