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sukhopar [10]
3 years ago
7

!!!!?HELP WILL MARK BRAINLIST ANSWER PLEASE HELP!!!! !!ALSO I ADDED THE PICTURE!!!

Mathematics
1 answer:
8090 [49]3 years ago
5 0

Answer:

I believe it's 20 seconds.

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stepladder [879]

Answer:

52kg

Step-by-step explanation:

use cross multiplication method when encounter problems like these

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Please help will pick brainliest
nexus9112 [7]

Answer:

Cb.12

Step-by-step explanation:

I took the test my self

7 0
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What is the domain and range of the following? (1,5) (-2,4) (-3,0) (-6,2)
miskamm [114]

Domain: {1, -2, -3, -6}

Range: {5, 4, 0, 2}

im not 100% sure but Im pretty sure it’s that

5 0
3 years ago
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Select the statement that best justifies the conclusion based on the given information. If x + 5 = 15, then x = 10. addition pro
Inga [223]

Answer:

subtraction property of equality

Step-by-step explanation:

The substraction property of equality is the property that states that you can solve the value of an equality by subtracting the value that is adding up to the variable by substracting it from the other side of the equality, an example would be like this:

x+5=15\\x+5(-5)=15(-5)\\x=10

By substracting form both sides the value that is along the "x" you get the value of the "x".

6 0
3 years ago
A random sample of 28 items is drawn from a population whose standard deviation is unknown. The sample mean is x=900 and the sam
tatiyna

Answer:

<em>795.596≤u≤804.403</em>

Step-by-step explanation:

Confidence interval is expressed using the formula;

CI = xbar ± (z*s/√n)

xbar is the sample mean

z is the z score at 98% confidence

s is the standard deviation

n is the sample size

Given

xbar = 800

z = 2.33

s = 10

n = 28

Substitute into the formula;

CI =800 ± (2.33*10/√28)

CI = 800 ± (2.33*10/5.2915)

Ci = 800± (2.33* 1.8898)

CI = 800 ± 4.4033

CI = (800-4.4033, 800 + 4.4033)

CI = (795.596, 804.403)

<em>Hence an interval estimate of u with 98% confidence is expressed as </em>

<em>795.596≤u≤804.403</em>

7 0
3 years ago
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