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3 years ago

Howard can mow 3 lawns in 6 hours. How many lawns can he mow in 24 hours?

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

5 0

12 is the answer !!!!!!!!!!!!!!!!!!!!!!!!

Papessa [141]3 years ago

4 0

Answer:

12 lawns in 24 hours

Step-by-step explanation:

I hope that this helps. 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

578

448

469

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

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3 years ago

Which of the following transformations preserves orientation, but does NOT preserve congruence?

AlexFokin [52]

Reflection does not preserve orientation.
Dilation (scaling), rotation and translation (shift) do preserve it.

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4 years ago

A line has a slope of -6 over 7. What is the slope of the line parallel to it? And what is the slope of the line perpendicular t

olga_2 [115]

The slope of the parallel line is -6/7
the slope of the perpendicular line is 7/6
the slope of the line = -6/7
the gradient of two parallel lines are equal
the product of the gradient of two perpendicular lines is -1
: the gradient m1*m2 = -1
m2= -1(-6/7)
m2= 7/6

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3 years ago

Slope 2 and passing through (10,17)

TiliK225 [7]

Answer:

y = 2x -3

Step-by-step explanation:

y = 2x + b

plug the point in to the formula and solve for b

17 = 2 x 10 + b

b = -3

Use this to write the formula y = mx + b

m is slope

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3 years ago

What's the area of this

Ira Lisetskai [31]

The answer would be 16.5

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