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3 years ago

Express a-9 with a positive exponent

Mathematics

2 answers:

My name is Ann [436]3 years ago

7 0

Answer: $a-9^{1}$

professor190 [17]3 years ago

4 0

Answer:

$a-9^{1}$

Hope that helps!

Step-by-step explanation:

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Spiderman charges $25 for a service call plus $50 per hour of service. If Spiderman

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$425

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2 years ago

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Perform the following mathematical operation, and report the answer to the correct number of significant figures. 0.34 x 0.568 =

BlackZzzverrR [31]

The multiplication of 0.34 by 0.568 will be 0.19312 and the number of significant figures is five.

<h3>How to illustrate the information?</h3>

In positional notation, significant figures are the digits in a number that are trustworthy and required to denote the amount of something. Significant figures are the number of digits that add to the correctness of a value, frequently a measurement.

It should be noted that significant figures are the numbers that are reliable and are usually non zero digits.

In this case, the multiplication of 0.34 by 0.568 will be 0.19312.

Therefore, the number of significant figures is five.

Learn more about mathematical operations on:

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1 year ago

A physical education department wanted a single test of upper body strength that was easy to administer. Dips on the parallel ba

Gennadij [26K]

Answer:

24.23 ; 13.47 ; 0.782 ; p value < 0.00001 ;7.45

Step-by-step explanation:

Given that :

ΣX = 3,416, ΣY = 1,899, SDX = 8.84, SDY = 4.70, ΣZXZY = 109.416

Sample size, N = 141

Mean of X:

£X / N = 3416 / 141 = 24.23

Mean of Y:

£Y / N = 1899 / 141 = 13.47

B.) Correlation between the 2 variables :

£ZXZY / N - 1

= 109.416 / 140

= 0.782

C.)

Level of significance and p value :

T = [Rsqrt(n-2)] ÷ sqrt(1 - R²)

T = [0.782 * sqrt(139)] ÷ sqrt(1-0.782^2)

T = 14.79

P value from Tscore calculator

Df = 141 - 2 = 139 ; α = 0.05

Pvalue = 0.00001

Pvalue < α ; Hence, a significant positive relationship exists.

To obtain regression model :

Slope = £ZXZY / SDX²

m = 109.416 / 8.84^2 = 1. 4

yintercept = meanY - slope*x

yintercept = 13.47 - 1.4*24.3

yintercept = - 20.55

Equation in slope intercept form:

y = mx + c

y = 1.4x - 20.55

For x = 20

y = 1.4(20) - 20.55

y = 7.45

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3 years ago

Function 1: y = 4x + 5

vlabodo [156]

Y=mx+b
m=slope

given
y=4x+5
m=4=slope

2.
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given
(1,6) and (3,10)
slope=(10-6)/(3-1)=4/2=2

function 1 slope is 4
function 2 slope is 2
4>2

the first one has greater rate of change

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