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sergeinik [125]
3 years ago
5

Rewrite y=(0.9)^t−4 in the form y=a(1+r)^t or y=a(1−r)^t to determine whether it represents exponential growth or exponential de

cay. Round a and r to the nearest hundredth if necessary.
QUICK PLEASE!!!
Thanks
Mathematics
1 answer:
son4ous [18]3 years ago
6 0

Answer:

its

Step-by-step explanation:

13+(4^3)

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klasskru [66]
I hope this helps you

7 0
4 years ago
If the sides of two similar triangles are in the ratio of 3:5, find the ratio of their areas.
Kazeer [188]

Ratio of areas of similar triangles is 9 : 25.

Solution:

Given data:

Ratio of sides of two similar triangles = 3 : 5

To find the ratio of areas of the triangles:

We know that,

<em>In two triangles are similar, then the ratio of their area is equal to the square of the ratio of their sides.</em>

$\text{Ratio of areas} = \frac{\text{Area of triangle 1}}{\text{Area of triangle 2} }

                      $=\left(\frac{3}{5}\right) ^2

                      $=\frac{9}{25}

Ratio of areas of similar triangles is 9 : 25.

5 0
3 years ago
Read 2 more answers
2^5 over 4 = 2^5 over 2a = 2^b = c What are a b and c
likoan [24]

Answer:

a = 2

b = 3

c = 8

Step-by-step explanation:

<em>2^5/4</em>=<em>2^5/2a</em>=<em>2^b</em>=<em>c</em>

      <em>2^5/4</em>, 2^5 = 32, 32/4 = 8

             so c, being what all of this is equal to, is 8

      <em>2^5/2a</em>, 2*2=4

              so a = 2

      <em>2^b </em>= 8, ∛8 =  3

              so b = 3

Hope my explanation makes sense :)

6 0
4 years ago
0.4x + 28.5 = 281 Solve for x.
mash [69]

Answer:

Step-by-step explanation:

281-28.5=252.5

252.5 divided by 0.4=631.25

X=631.25

6 0
3 years ago
Marshall invest $4500 into an account bearing 6% interest compounded semiannually. How much interest will be added into this acc
Sphinxa [80]

Answer:

$1547.62

Step-by-step explanation:

The principal Marshall invested is $4500.

The rate of interest is 6%

The compound interest formula is

A=P(1+r)^n

We substitute P=4500,r=0.06 and t=5 to obtain:

A=4500(1+ \frac{0.06}{2} )^ {2 \times 5}

We simplify to get:

A=4500(1+ 0.03)^ {10} = 4500 \times  {1.03}^{10}

This gives us:

A=6047.62

The interest after 5 years is

6047.62 - 4500 = 1547.62

4 0
3 years ago
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