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3 years ago

Find the unit rate. round to the nearest hundred if necessary

1 answer:

3 0

360÷60=60 60 miles per hour 6840÷45=152 152 costumes per day 45.5÷13=3.5 rounded to nearest hundred= 4 4 meters per second $7.40÷5=$1.48 rounded to nearest hundred = 1 $1 per pound

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Amélie runs a bakery. She wants to find out whether her cake sales are affected by the weather conditions. She recorded the dail

SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

Daily temp(in F) Cakes sold

42 39

45 52

48 31

54 61

59 72

62 35

64 61

65 34

67 58

75 45

84 24

To find whether there is an association between these two let us find the correlation coefficient between these two variables.

r=-0.1975

Since |r|<0.5, correlation is weak.

Let us test the hypothesis r =0

H0:r=0

Ha:r not equals 0

Test statistic = $\frac{r\sqrt{n-2} }{\sqrt{1-r^2} } \\=\frac{-0.1975\sqrt{11-2} }{\sqrt{1-0.1975^2} }\\=\frac{-0.5625}{{0.9803} } \\=-0.5738$

p =0.298

Since p value >0.10, at 90% significance level we accept that there is no association.

6 0

3 years ago

Place value of 2 in Decimal 137.5428

harina [27]

Answer:

0.002

Step-by-step explanation:

The explanation has been explained in the attached picture above.

6 0

2 years ago

Help ASAP I’ll mark you as brainlister PLEASE!!’

Alex17521 [72]

Answer:

A = 76.8 yd²

Step-by-step explanation:

The area (A) of a regular polygon is calculated as

A = $\frac{1}{2}$ pa ( p is the perimeter and a the apothem )

Here p = 8 × 4 = 32 yd and a = 4.8 yd , then

A = $\frac{1}{2}$ × 32 × 4.8 = 16 × 4.8 = 76.8 yd²

8 0

3 years ago

What is the slope from the coordinate points (2,6) (1,9)

Hunter-Best [27]

Answer:

$m=-3$

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS

Alg I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (2, 6)

Point (1, 9)

Step 2: Find slope m

Substitute: $m=\frac{9-6}{1-2}$
Subtract: $m=\frac{3}{-1}$
Divide: $m=-3$

8 0

2 years ago

Read 2 more answers

Which is the slope of the line that passes through the points (2,10) and (5,8)?

german

It is -3/2, 2/10 - 5/8 = -3/2

6 0

3 years ago