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lisabon 2012 [21]
3 years ago
11

Find the rate and unit rate of these please!

Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
8 0
You already have the rates, what you need to find out now is the unit rates. To do this, you simply take first number (eg.420) to divide by the second number (eg. 7).
a.60 miles per hour
b. 12 customers per day
c. 2.5 meters in 1 pound
d. $1.592 for 1 ound
ki77a [65]3 years ago
4 0
A. 420 miles in 7 hours =  420miles/7hours = 60 miles/hour

b. 360 customers in 30 days =  360 customers/30 days = 12 customers / day.

c. 40 meters in 16 pounds  =  40 meters / 16 pounds = 2.5 meters / pound

d. $7.96 for 5 pounds = $7.96 / 5 pounds = $ 1.592 / pound
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Solve 3^x − 2 = 3^7<br><br> A. 2<br> B. 5<br> C. 7<br> D. 9
Vikki [24]

Answer:

C) 7

Step-by-step explanation:

3^x−2=2187

Step 1: Add 2 to both sides.

3^x−2+2=2187+2

3^x=2189

Step 2: Solve Exponent.

3^x=2189

log(3x)=log(2189)        <<Take log of both sides

x*(log(3))=log(2189)

x= log(2189)/log(3)

x=7.000832

4 0
3 years ago
Sam is 2 years and his mother is 28 years old. In how many years will Sam's mother be 3 times as old as he will be?
stepan [7]
When Sam is 13 his mother will be 39 which is 3 times as old as he is. So Sam's mother will be 3 times as old as Sam will be in 11 years. (Your answer is 11 years.)
4 0
3 years ago
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PLS HELP!! WILL GIVE BRAINLIEST Chris claims that Path A is 2 miles longer than Path B. What calculation error
maria [59]

Answer:

Step-by-step explanation:

He forgot the scale. It is 2 inches longer on the graph, but each inch represents 1/4 mile. So it is 2 quarter miles, or 1/2 mile

5 0
3 years ago
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Circle.center:(2,-5).radius:9
Kaylis [27]

Answer:

Step-by-step explanation:

eq. of circle with center (h,k) and radius=r is

(x-h)²+(y-k)²=r²

reqd. eq. is

(x-2)²+(y+5)²=9²

8 0
4 years ago
Which value, when placed in the box, would result in a system of equations with infinitely many solutions?
Fantom [35]

Answer:

<h2>If we placed the number 10 in the box, we obtain a system of equations with infinitely many solutions.</h2>

Step-by-step explanation:

The given system is

y=2x-5\\2y-4x=a

<em>It's important to know that a system with infinitely many solutions, it's a system that has the same equation</em>, that is, both equation represent the same line, or as some textbooks say, one line is on the other one, so they have inifinitely common solutions.

Having said that, the first thing we should do here is reorder the system

y=2x-5\\2y=4x+a

This way, you can compare better both equations. If you look closer, observe that the second equation is double, that is, it can be obtained by multiplying a factor of 2 to the first one, that is

y=2x-5\\2y=4x-10

So, by multiplying such factor, we obtaine the second equation. Observe that a must be equal to 10, that way the system would have infinitely solutions.

Therefore, the answer is 10.

4 0
3 years ago
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