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Sindrei [870]
3 years ago
13

Help me to choose the right answer

Mathematics
1 answer:
irga5000 [103]3 years ago
8 0

Answer:

its B

Step-by-step explanation:

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A geologist had two rocks on a scale that weighed 2 1/2 lbs together. Rock A was 1/7 of the total weight. How much did Rock A we
GenaCL600 [577]
The total weight is 2 1/2 lbs

Rock A is 1/7 of the total weight....so it is 1/7 of 2 1/2 lbs..." of " means multiply

1/7 * 2 1/2 =
1/7 * 5/2 =
5/14 lbs <==
7 0
3 years ago
write an equation using "x" and then solve the equationThe library bought 115 new fictions, 38 non-fiction and x new reference b
oee [108]

Answer:X=21

Step-by-step explanation:

115+38+x = 174

153+ x= 174

X=174-153

X=21

3 0
3 years ago
HELP PLEASE!
Citrus2011 [14]
A table can be used to find the rate of change by giving you a visual representation of how the operation changes over time for example in the link i'm about to post you can see how much more money is earned as more cars are washed, it is showing how much money is being made OVER TIME, hope this helps :)

now to answer your second question, say you would like to know how many miles Tracy ran over a course of 2 hours, the x axis would be the miles and the y axis would be the time, then you would plot the different points on the graph showing the rate at which she is running
'
to answer your last question a linear interval would be a sequence of numbers that when places on a number line they will form a line, a nonlinear interval is a sequence of numbers that don't make a line because there are inequities meaning the numbers in the sequence are all over the place 

Hope this helps and i will post the pictures so you can have a visual representaion

6 0
3 years ago
Read 2 more answers
2x – 3y = -5
vampirchik [111]

Answer:

y = 3

Step-by-step explanation:

2x-3y = -5 --------- (1)

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

substitute (2) into (1)

2x-3y = -5

2x-3( 2+x ) = -5

2x-6-x = -5

2x-x = -5+6

x = 1

substitute x = 1 into (2)

y = 2+x

y = 2+1

y = 3

4 0
3 years ago
What is the approximate circumference of a circle with 17.4 cm
Natasha_Volkova [10]
If the diameter of the circle is 17.4 cm, the approximate circumference of the circle would be 54.636. If the radius of the circle is 17.4 cm, the approximate circumference would be 109.272.

Explanation:
Circumference of a circle = Pi (3.14) x diameter

In this case, the diameter (I am assuming) is 17.4, so in order to solve the circumference you must multiply Pi by 17.4.

(If 17.4 is the radius, simple multiply 17.4 by 2 and then solve for the circumference like you normally would. You must multiply the radius by two because the radius is half of the circles circumference.

Hope that helps. Happy learning!
8 0
3 years ago
Read 2 more answers
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