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hichkok12 [17]
3 years ago
8

Multiply: 68.1 x 0.8 ___________________ explain it plz

Mathematics
2 answers:
MArishka [77]3 years ago
4 0

Answer:

54.48

Step-by-step explanation:

evablogger [386]3 years ago
4 0

Answer:

54.48

Step-by-step explanation:

 68.1

x  0.8

54.48

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Which property of equality could be used to solve x - (-6) = 18?
oksian1 [2.3K]

Answer:subtraction property

Step-by-step explanation:

Two a negative and a negative makes a positive so it would be x+6=18 so u do the opposite on both sides so it would be subtraction

8 0
3 years ago
Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile
Llana [10]

Answer: 37

Step-by-step explanation:

Given : Significance level : \alpha:1-0.98=0.02

Critical value : z_{\alpha/2}=z_{0.01}=2.33

margin of error : E= 1 mile per gallon

Population standard deviation: \sigma=2.6 miles per gallon.

We know that when the population standard deviation is known then the formula to find the sample size is given by  :

n=(\dfrac{z_{\alpha/2}\times \sigma}{E})^2

n=(\dfrac{(2.33)\times 2.6}{1})^2=36.699364\approx37  [Round to the next whole number.]

Hence, the required number of automobiles should be used in the test = 37

7 0
3 years ago
What value would be placed in the space shown to create a perfect square trinomial?
charle [14.2K]

Answer:

1st option 9/4

Step-by-step explanation:  Searched up the problem on brainly and this was the answer. Hope that helps

3 0
2 years ago
Can someone help me with this guys? Thank you so much! I mark as brainliest
Vitek1552 [10]

Answer:

y=45

x=9

z= 9 root 2

Step-by-step explanation:

This is a right isosceles triangle, so

y=45

x=9

z= 9 root 2

9²+9²=z²

81+81=z²

162=z²

√162=z

z=9√2

5 0
3 years ago
Find the minimum maximum and domain and range of the functions <br>h(x) = -x² + 4x - 2​
Svet_ta [14]

Domain (-infinity,infinity)

Min(?

max(2,2)

3 0
3 years ago
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