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4 years ago

I need help with number 6

Mathematics

1 answer:

Fofino [41]4 years ago

6 0

Writing it as a unit rate in this case is simply altering it to miles per hour so for 171 miles in 3 hours you divide 171 by 3 which equals 57 so the unit rate for this problem is 57mph.
Hope this helps.

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I need help ASAP help me plzzzzzz

anzhelika [568]

The answer is A because you need to find the unit rate of each cost
Since $2.80 is for 2 liters, do 2.80/2 which equals 1.4. So that’s the cost for one liter
Then, 6 half liter bottles is just 3 liters because 6*1/2= 3. Then to find the unit rate for that, do 3.90/3 which equals 1.3.
So the first option is $1.40 per liter and the second option is $1.30 per liter so the first option is more expensive- the 2-liter bottle, and the cost for that is 1.40
Hope this helps:))

4 0

3 years ago

Government data show that 9% of the American population are at least 75 years of age. To test a random-digit dialing device, you

Lubov Fominskaja [6]

Answer: 9% parameter, 3% statistic

Step-by-step explanation: Parameter and statistic are are statistical terms used to describe a group or observation.

However, the distinction between a parameter and a statistic is in the measured observation.

Parameter is used to describe an entire population while statistic is used to describe a sample.

Where a population refers to the entire number of people or inhabitant of a particular country while a sample refers to a subset of observation drawn randomly from a population which serves a representative of the entire population.

In the question above, 9% is used to make a description of the whole American population who are at least 75 years of age. While,

3% is used to describe a subset of the American population (sample) who are 75 years or older.

7 0

4 years ago

How you find 8 and 10

Fittoniya [83]

Answer:

8. X = 10.5 and 19. X = 5

Step-by-step explanation:

8. You know that a triangle interior angles should add up to 180° so:

(10x - 11) + (3x - 2) + (3x + 1) = 180

180 = 16x - 12

168 = 16x

The you divide each side by 16:

168 ÷ 16 = 16x ÷ 16

X = 10.5

10. You know that a straight line equals 180° and interior angles add up to 180° so:

1st you do 180 - 151 = 29°

2nd (11x - 1) + (20x - 3) + (29) = 180

180 = 31x + 25

155 = 31x

The you divide each side by 31:

155 ÷ 31 = 31x ÷ 31

X = 5

8 0

3 years ago

Identify the expression equivalent to 4x + x + 7) - 2x+8 - 4 by substituting x= 1 and x = 2. А. 6x + 11 B. 3(x+7) C. 2(3x + 16)

Alex

Answer:

4x + x + 7) - 2x+8 - 4 by substituting x= 1 and x = 2. А. 6x + 11 B. 3(x+7) C. 2(3x + 16) D. 3x + 16

Step-by-step explanation:

4 0

3 years ago

PLEASE HELP !! suppose that F(x)=x^2 and G(x)=3x^2+8.which statement best compares the graph of G(x) with the graph of F(x)

Leno4ka [110]

Answer:

The graph of g(x) is the graph of f(x) stretched by 3 and shifted 8 units up

Step-by-step explanation:

Given

$f(x)=x^2$

$g(x) =3x^2 + 8$

Required

Compare g(x) and f(x)

We have:

$g(x) =3x^2 + 8$

Rewrite as:

$g(x) =3[x^2] + 8$

Substitute: $f(x)=x^2$

$g(x) =3f(x) + 8$

This means that:

f(x) is stretched vertically by a factor of 3

Then shifted upwards by 8 units to give g(x)

3 0

3 years ago