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KIM [24]
3 years ago
12

Eight less a number is less than or equal to 17​

Mathematics
1 answer:
Karolina [17]3 years ago
6 0

Step-by-step explanation:

n-8≤17

add 8 on both sides to isolate the variable.

n is less than or equal to 25

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Andre has 2 times as many model cars as Peter, and Peter has one-third as many model cars as Jade. Andre has 6 model cars.
attashe74 [19]

Answer:

Jade has 9 cars

Step-by-step explanation:

4 0
3 years ago
K.Brew sells a wide variety of outdoor equipment and clothing. The company sells both through mail order and via the internet. R
Elan Coil [88]

Answer:

Step-by-step explanation:

The formula for determining the confidence interval for the difference of two population means is expressed as

Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)

Where

x1 = mean sale amount for mail order sales = 82.70

x2 = mean sale amount for internet sales = 66.9

s1 = sample standard deviation for mail order sales = 16.25

s2 = sample standard deviation for internet sales = 20.25

n1 = number of mail order sales = 17

n2 = number of internet sales = 10

For a 99% confidence interval, we would determine the z score from the t distribution table because the number of samples are small

Degree of freedom =

(n1 - 1) + (n2 - 1) = (17 - 1) + (10 - 1) = 25

z = 2.787

Margin of error =

z√(s²/n1 + s2²/n2) = 2.787√(16.25²/17 + 20.25²/10) = 20.956190

4 0
3 years ago
About how many cubes were used to make this figure? A. about 40 B. about 70 C. about 100 D. about 140
natta225 [31]

Answer:

Around 100,i.e. 105

Step-by-step explanation:

In the given cube

Length of the cube = 7 unit cells

Breadth of the cube = 3 unit cells

Height of the cube = 5 unit cells

Therefore the number of unit cubes required to make such big cube is nothing but the volume of the big cube = length*breadth*height

⇒Number of cubes used to make that big cube= 7*5*3

                                                                               = 105

Hence, option D (around 100) is the correct answer

4 0
3 years ago
In preparation for the Senior Prom, 8 seniors got together and decided to travel in style and rent a limousine. They investigate
Snowcat [4.5K]
<span>The limousine will cost $240.
$180 for the first three hours, plus 30 for each hour after. They need two extra hours.
So, 180+30(2)=240.
They also want to leave a $20 dollar tip.
So, 240+20=260
That is $260 dollars they need to pay altogether.
Divide that number by the number of students and you'll get how much they each must pay.
260/8=32.50

$32.50 each.

♦Brainliest please♦
</span>
4 0
3 years ago
Calculate the area of a circle with radius of 2 cm
Mariulka [41]
A = pi × r²

3.14 x 2²

3.14 x 4 

A = 12.56636 ≈ 12.56
 
hopefully this helps u and if u know the formula to solve it, it is super easy

6 0
3 years ago
Read 2 more answers
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