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balandron [24]
2 years ago
7

Please help pictures are down below

Mathematics
1 answer:
pshichka [43]2 years ago
6 0
(x,y)->(x-6,-y)
Traigle ABC is shifted left by 6 units and reflected over the x axis.
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09. Find the rate A sum of money doubled itself in 15 years. In how many years will it become 8 times of itself?​
tamaranim1 [39]

Answer:

45 years

Step-by-step explanation:

Let the sum be x and CI=2x

We know that

CI=P(1+100R)T

2x=x(1+100R) ^15

(1+100R)^15=2                

Let m be the number of years.

Therefore,

x(1+100R)m=8x

(1+100R)m=23

(1+100R)m=[(1+100R)^15]3          

From eqn(1)

(1+100R)m=(1+100R)45

On comparing both power, we get

m=45 years

5 0
2 years ago
A city councilwoman is concerned that the new contractor she hired is taking too long to replace defective streetlights. She wou
satela [25.4K]

Answer:

There is significant evidence to conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.

Step-by-step explanation:

Given the data :

6.2 7.1 5.4 5.5 7.5 2.6 4.3 2.9 3.7 0.7 5.6 1.7

The hypothesis:

H0: μ = 3.2

H1 : μ > 3.2

n = sample size = 12

The sample mean, xbar = ΣX / n

xbar = 53.2 / 12

xbar = 4.43

Using calculator;

Sample standard deviation, s = 2.147

The test statistic :

(xbar - μ) ÷ (s/sqrt(n))

(4.43 - 3.2) ÷ (2.147/sqrt(12)

1.23 / 0.6197855

Test statistic = 1.985

The Pvalue using the Pvalue from Tscore calculator :

Tscore = 1.985 ; df = 12 - 1 = 11

Pvalue = 0.036

Since Pvalue < α ; We reject the Null

Hence, we conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.

5 0
2 years ago
I need this answer as fast as you can and explain simple
blondinia [14]

Answer:

A

Step-by-step explanation:

(b-3)(b-3) would equal (b^2–6b+9), when using the foil method.

4 0
3 years ago
11. Dustin wants to build a storage box with the following dimensions: 12 inches by 2.25 ft by 1/3 yd.
Crazy boy [7]

Answer:

12 x 2.25 x 1/3 = 9

Step-by-step explanation:

L x W x H

4 0
3 years ago
Apply the distributive property to factor out the greatest common factor. 12+80=12+80
Ludmilka [50]

Answer: 92

Step-by-step explanation:

So 12 +80 = 4(3 + 20) = 92

5 0
3 years ago
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