-3x + 4y – 5xy ; x= -3, y = 2 Need help ASAP plz

Mathematics

2 answers:

marysya [2.9K]3 years ago

4 0

Answer:

Step-by-step explanation:

First, plug in the numbers.

x = -3 and y = 2.

-3(-3) + 4(2) - 5(-3)(2)

Simplify by multiplying.

-3 * -3 = 9

4 * 2 = 8

-5 * -3 * 2 = 30

Your new equation is:

9 + 8 + 30 = ?

Simplify by adding. 9 + 8 + 30 = 47

stepan [7]3 years ago

3 0

Answer:

Step-by-step explanation:

-3(-3) + 4(2) - 5(-3)(2)

9 + 8 + 30 = 47

You might be interested in

Helppp new asap maths

allochka39001 [22]

The answers are boxed the rest of it is just the work in case you want to know how to do it.

5 0

3 years ago

A fruit company delivers its fruit in two types of boxes: large and small. A delivery of 9 large boxes and 7 small boxes has a t

SVETLANKA909090 [29]

279-135=144 boxes so that means it is 134kg

8 0

3 years ago

Find the distance between (3,4) and (4,7)

horsena [70]

The square root of 10. The first answer

6 0

3 years ago

Read 2 more answers

The birth rate of a population is b(t) = 2300e0.021t people per year and the death rate is d(t)= 1450e0.018t people per year, fi

Cerrena [4.2K]

Answer:

38,674.This area represents the increase in population over a 10-year period.

Step-by-step explanation:

When graphed over the interval 0 ≤ t ≤ 10, the birth rate is more than the death rate. This means the area between the two curves is the amount of births subtract the amount of deaths. This results in an area which means the increase of the population.

The birth rate is graphed in green and the death rate is graphed in blue.

To find the area, take the integral of the difference of the functions:

$\int\limits^{10}_0 {2300e^{0.021t} - 1450e^{0.018t} } \, dt \\\\\frac{2300e^{0.021t}}{0.021} - \frac{1450e^{0.018t}}{0.018} \\\\(\frac{2300e^{0.21}}{0.021} -\frac{1450e^{0.18}}{0.018} ) - (\frac{2300}{0.021}- \frac{1450}{0.018} ) \\\\135117.12 - 96442.51 \\\\38,674$