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3 years ago

10

Aaron's car used 3- gallons of gas when

2 answers:

monitta3 years ago

4 0

We want to find miles per gallon. Another way of saying miles per gallon is miles/gallon. So we will plug the numbers into this equation:

60 miles/3 gallons = 20 miles/gallon

This is because 60/3=20.

I hope this makes sense.

skad [1K]3 years ago

4 0

Answer:

His car gets 20 miles per gallon.

Step-by-step explanation:

1. 60 = 3x (divide by 3)

2. 20 = x

Therefore, the car uses 20 miles per gallon.

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Which of the following products is negative? Select all that apply. *

AlekseyPX

Answer:

(-4)(9)
(6)(-6)

Step-by-step explanation:

1.

$(-4)(-9)\\\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a\\=4\times\:9\\= 36$

2.

$(-4)(9)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=-4\times\:9\\\\\mathrm{Multiply\:the\:numbers:}\:4\times\:9=36\\=-36$

3.

$(6)(6)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=6\times\:6\\\\\mathrm{Multiply\:the\:numbers:}\:6\times\:6\\=36$

4.

$(-6)(-6)\\\\\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a\\=6\times 6\\\\\mathrm{Multiply\:the\:numbers:}\:6\times\:6\\=36$

5.

$(6)(-6)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=-6\times 6\\\\\mathrm{Multiply\:the\:numbers:}\:6\times \:6=36\\=-36$

8 0

3 years ago

Help..........................

kogti [31]

Answer:

D

Step-by-step explanation:

I'm not certain but I guess that's it

5 0

3 years ago

37 degrees Celsius to Fahrenheit

konstantin123 [22]

98.6 degrees fahrenheit

5 0

3 years ago

Read 2 more answers

An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.

Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder 1 2 3 4

Observed visits; $o_i$ 60 90 92 58

data sample = 300

Expected $e_i$ = 300 / 4 = 75

the x² test statistic = ?

$X^2_{stat$ = ∑[ ( $o_i$ - $e_i$ )²/ $e_i$ ]

$X^2_{stat$ = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

$X^2_{stat$ = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

$X^2_{stat$ = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0

3 years ago

Hep asappppppppppppp

schepotkina [342]

Answer:

(6 , -1)

Step-by-step explanation:

2x+ y = 11 ----------------(I)

y = 11 - 2x --------------------(II)

$\frac{1}{2}x - 5y = 8$

Multiply the whole equation by 2

$2*\frac{1}{2}x -2*5y = 2*8$

x - 10y = 16 --------------------(III)

Substitute y = 11- 2x in equation (III)

x - 10(11 - 2x) = 16

x - 110 + 20x = 16

21x - 110 = 16

21x = 16 +110

21x = 126

x = 126/21

x = 6

Plugin x = 6 in equation (II)

y = 11 - 2*6

y = 11 - 12

y = -1

5 0

2 years ago