3 years ago

Use algebra tiles to model (2x+1)(3x+3)

Mathematics

2 answers:

Monica [59]3 years ago

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The answer for this equation is (5x+4)

Leokris [45]3 years ago

3 0

Answer:

Look at the attachment below.

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Just took the same quiz.

The slope is 2.
The slope represents <span>the number of miles hiked every hour.</span>

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3 years ago

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Stolb23 [73]

Multiply 9 and 5 then multiply by .5 giving you 22.5 so I’d say that’s your best option

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3 years ago

Answer plzzz. Tell the truth and answer correctly

Free_Kalibri [48]

Answer:

54 feet

Step-by-step explanation:

We can use proportions

1 inch 27 inches

--------- = ------------

2 feet x feet

Using cross products

1x = 54

The building is 54 feet

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3 years ago

7. A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The T

Anit [1.1K]

Answer:

Modification has not reduced the number of accidents.

Step-by-step explanation:

$H_0: \mu\geq0\\H_a:\mu$

A B C D E F G H

Before modification 5 7 6 4 8 9 8 10

After modification 3 7 7 0 4 6 8 2

Difference -2 0 1 -4 -4 -3 0 -8

Mean of differences $M_d = \frac{sum}{8}=\frac{2+0-1+4+4+3-0+8}{8}=2.5$

Standard deviation of differences = $\sqrt{\frac{\sum(x-\bar{x})^2}{n}}=2.9277$

Formula of paired t test :

$t=\frac{M_d}{\frac{s}{\sqrt{n}}}\\t=\frac{2.5}{\frac{2.9277}{\sqrt{8}}}\\t = 2.4152$

Df = n-1 = 8-1 =7

$t critical = t_{(df, \alpha)}=t_{7,0.01}=2.998$

t critical> t calculated

So, We failed to reject null hypothesis

Hence modification has not reduced the number of accidents.

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2 years ago

2. Patients arrive at a hospital accident and emergency department at random follow a

mina [271]

Answer:

a )i) 0.117

ii)0.4126

b)0.7769

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2 years ago