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V125BC [204]
3 years ago
7

There are 9 new books and 4 used books on a shelf.

Mathematics
2 answers:
barxatty [35]3 years ago
8 0
12:9 and 4:12 , I'm pretty sure that should be correct
Nataly [62]3 years ago
7 0
The CORRECT answer is:
a)13:9
b)4:13
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If a solution has 24g of sugar in 130ml of water, what is its concentration?
Jobisdone [24]

Answer: concentration = 15.58%

Step-by-step explanation:

Given: mass of sugar = 24 g = 24 ml   [ ∵ 1 g = 1 ml]

Volume of solution = Quantity of water + quantity of solute

= 130 +24 ml

= 154 ml

Concentration = \dfrac{mass\ of\ solute}{Volume\ of\ solution}\times100

=\dfrac{24}{154}\times 100\\\\\approx15.58\%

Hence, the concentration =15.58%

3 0
3 years ago
Warren, a golf fan, was curious about how often professional golfers make successful putts from various distances. He looked at
anzhelika [568]

Answer:

Explained below.

Step-by-step explanation:

A correlation coefficient is a mathematical measure of certain kind of correlation, in sense a statistical relationship amid two variables

Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa.  

Values amid 0.7 and 1.0 (-0.7 and -1.0) implies a strong positive (negative) linear relationship amid the variables.

It is provided that Warren noticed a strong negative linear relationship between the success rate and putt distances.

This implies that as the putt distances are increasing the success rates are decreasing and as the putt distances are decreasing the success rates are increasing.

4 0
3 years ago
Read 2 more answers
Four times a number decreased by 13 minus 2 times the same number is 9. What is the number?
Flura [38]

Answer:

The number is 59

Step-by-step explanation:

13×4-2+9=59

6 0
3 years ago
I need help. Say two squirrels are mating in a tree and that tree is 56 feet tall. How many babies would they have if the sun wa
Natasha_Volkova [10]
OK. Math is a SERIOUS subject...... ...........This is a SERIOUS website were students come to LEARN and SHARE ideas and HELP each other with SERIOUS scholarly work.......... Do not slander this website with ur "Joke" questions. Becuse it leads NOWHERE....... ..... DO NOT BRING UR SLANDEROUS STUPID NONSENSE QUESTIONS INTO THIS WEBSITE......I WILL report you to the mods. OK? AGH people like U is why i hate this gernation................... -_-
4 0
3 years ago
HELP I NEED HELP ASAP
AfilCa [17]
Answer :
x = -1 and y = -4

Solution :

4 0
3 years ago
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