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3 years ago

What is the value of the expression (9+6)×3 when simplified? PLEASE HELP

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

8 0

Answer:

The answer would be 45

OverLord2011 [107]3 years ago

6 0

The answer is gonna be 45 have a good day

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The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained

poizon [28]

Answer:

a. $H_{0}:$ u1≤u2

$H_{a} :u1>u2$

b P<0.05 rejected H

Step-by-step explanation:

College High School

485 442

534 580

650 479

554 486

550 528

572 524

497 492

592 478

487 425

533 485

526 390

410 535

515

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The mean is the average . the sum of number over the number of observation

x1=525

x2=487

s.d1=59.42

s.d2=51.74

n1=16

n2=12 $\alpha =0.05$

Determine the hypothesis

$H_{0}:$ u1≤u2

$H_{a} :u1>u2$

find the degree of freedom $(\frac{s1^2}{n1} +\frac{s2^2}{n2} )^2/(\frac{s1^2}{n1} )^2/n1-1+(s2^2/n2)^2/n2-1\\\\(\frac{59.42^2}{16} +\frac{51.7476^2}{12} )^2/(\frac{59.42^2}{16} )^2/16-1+(51.74^2/12)^2/12-1$

p-value is the probability of obtaining the value of the test statistics. In the column of t-value in the row df=25

0.025<P<0.05

if the P value is actually less than or the same as the significant level, then the null hypothesis is rejected

P<0.05 rejected H

8 0

3 years ago

Find the circumference of the circle use 3.14 for pi when the radius is 13 cm

Alchen [17]

Answer:

C =81.64 cm

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r

C = 2 * 3.14 * 13

C =81.64 cm

7 0

3 years ago

Read 2 more answers

Trish takes out a furniture loan of $5500 and a simple interest rate of 6% per year which of the following is closest to the amo

Step2247 [10]

Answer:

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 6%/100 = 0.06 per year,

then, solving our equation

I = 5500 × 0.06 × 2.5 = 825

I = $ 825.00

The simple interest accumulated

on a principal of $ 5,500.00

at a rate of 6% per year

for 2.5 years is $ 825.00.

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3 years ago

How many 30° angles does it take to make a full turn?

sergejj [24]

360 degrees is a full turn, so if you multiply 30 degreed by 12, you go around in a circle.

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3 years ago

A rectangle has a height of 2 + 4 and a width of zº + 3x + 2.

kari74 [83]

Answer:

Step-by-step explanation:

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3 years ago