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Snowcat [4.5K]
2 years ago
13

Hey can anyone pls pls pls help me in dis!!!!!

Mathematics
2 answers:
Afina-wow [57]2 years ago
8 0

Answer:

Step-by-step explanation:

l=√(4²+7²)

=√(16+49)

=√(65)

≈8.1 ft

wall is perpendicular to base and ladder is hypotenuse.

applying pythagoras's theorem.

cupoosta [38]2 years ago
6 0

Answer:

c=8.1

Step-by-step explanation:

a^2+b^2=c^2

7^2+4^2=c^2

49+16=c^2

\sqrt{65}=\sqrt{c^2}

8.06=c

or 8.1

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First you have to subtract 35 on both sides, then you would have to divide by 90
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3 years ago
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Which expression is not equivalent to 6^3/6^6?<br><br> a: 1/6^2<br><br> or<br><br> b: 1/6^3
Angelina_Jolie [31]

Answer:

<h2>A. 1/6^2</h2>

Step-by-step explanation:

6^3/6^6 = 1/216

1/6^2 = 1/36 ≠ 1/216

1/6^3 = 1/216

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3 years ago
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A bottled water distributor wants to determine whether the mean amount of water contained in 1-gallon bottles purchased from a n
mash [69]

Answer:

We fail to reject H0; Hence, we conclude that there is no significant evidence that the mean amount of water per gallon is different from 1.0 gallon

Pvalue = - 2

(0.98626 ; 1.00174)

Since, 1.0 exist within the confidence interval, then we can conclude that mean amount of water per gallon is 1.0 gallon.

Step-by-step explanation:

H0 : μ= 1

H1 : μ < 1

The test statistic :

(xbar - μ) / (s / sqrt(n))

(0.994 - 1) / (0.03/sqrt(100))

-0.006 / 0.003

= - 2

The Pvalue :

Pvalue form Test statistic :

P(Z < - 2) = 0.02275

At α = 0.01

Pvalue > 0.01 ; Hence, we fail to reject H0.

The confidence interval :

Xbar ± Margin of error

Margin of Error = Zcritical * s/sqrt(n)

Zcritical at 99% confidence level = 2.58

Margin of Error = 2.58 * 0.03/sqrt(100) = 0.00774

Confidence interval :

0.994 ± 0.00774

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(0.98626 ; 1.00174)

7 0
3 years ago
5. Solve by using the square root property.<br>(x - 3)² +6=1​
Veseljchak [2.6K]

Answer:

x = 3 + i+√5

x = 3 + i-√5

OR

x= 4 - √6

x= 4 +√6

Step-by-step explanation:

(x - 3)² +6=1​

(x - 3)² + 6 = 1

        -6   -6

sq root > (x - 3)²      = -5

x-3 = i±√5     (i because neg. number)

x = 3 + i±√5

since its ±

two possible answers

x = 3 + i+√5

x = 3 + i-√5

Or

(x - 3)² +6=1​

(x-3)+  √6= √ 1

x-3 = 1 - (±)  √6

x= 4 - (±)  √6

Answers

x= 4 - √6

x= 4 +√6

6 0
3 years ago
Pls help ..............
Pepsi [2]

Answer:

y=3x+3.

Step-by-step explanation:

the given graph intersect the X-axis in (-1;0), the Y-axis in (0;3). Then the slope of the required line is (3-0)/(0+1)=3 and the interception is 3 (point (0;3)).

Finally, the required equation in slope-interception form is y=3x+3.

3 0
2 years ago
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