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KIM [24]
3 years ago
7

Help help pls pls!!!!

Mathematics
1 answer:
DIA [1.3K]3 years ago
3 0
What grade are you in?
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Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage r
Mazyrski [523]

Answer:

Decrease of 63.5%.

Step-by-step explanation:

Exponential function:

An exponential function has the following format:

y = y(0)(1+r)^{x}

In which y(0) is the initial value and r is the rate of change, as a decimal. If r is positive, it is a increase. If it is negative, it is a decrease.

In this question:

We have that:

y = 3100(0.365)^x

So

1 - r = 0.365

r = 0.365 - 1 = -0.635

So a decrease of 63.5%.

6 0
3 years ago
Read 2 more answers
Diego makes green paint by mixing 10 tablespoons of yellow paint and 2 tablespoons of blue paint. Which of these mixtures produc
Setler [38]

Answer: 1, 2 and three

Step-by-step explanation:

7 0
3 years ago
What are the surface areas of those ?
Serggg [28]

Answer:

7) SA=13.8 yd^{2}. 8)SA=96yd^{2}

Step-by-step explanation:

7)

Here we have two different types of faces.Bottom face and side faces which are equivalent.

To calculate the area of a trinagle we have the formula of area to be

A=\frac{1}{2}ab

where a is the height of the triangle and b is the base of the triangle.

here let us first calculate the area of the bottom face,

a1=\frac{1}{2}*2.6*3

a1=3.9yd^{2}

now for the top faces which are similar, areas would be

a2=\frac{1}{2}*2.2*3

3*a2=9.9yd^{2}

Hence the total area is

9.9+3.9=13.8 yd^{2}

8)

As we have seen in the above question area for a traingle would be

A=\frac{1}{2}ah and for rectangle would be lb where l and b are the lengths and breaths of the rectangle.

Area of traingles would be ,

A1=\frac{1}{2}*3*4+ \frac{1}{2}*3*4

A1=12

Area of rectangles would be,

A2=7*4+7*5+7*3

A2=84

Hence the total area is

A=96

6 0
3 years ago
An experiment consist of drawing 1 card from a standard 52 -card deck. Let E be the event that card drawn is a 2. Find P(E').
Snezhnost [94]
The sum of the probabilities of an event E and its complement E' is  1, 

that is P(E)+P(E')=1, where E' is "not E".

The event E can happen in 4 ways, because there are four 2's that can be drawn.

P(E)=n(E)/52=4/52=0.08

P(E')=1-P(E)=1-0.08=0.92


Answer: 0.92
5 0
3 years ago
Factor completely 2x2 + 2x − 24.
nalin [4]

2x^2 + 2x - 24

= 2x^2 + 8x - 6x -24

= 2x(x + 4) -6(x + 4)

= (x+4)(2x-6)

7 0
3 years ago
Read 2 more answers
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