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Otrada [13]
2 years ago
5

What is the product of -15 and -3? A.5 B.-5 C.-18 D.45

Mathematics
1 answer:
Anastaziya [24]2 years ago
7 0
The product of -15 and -3 is d
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A 100 rupee note was changed to 10 and 5 rupee notes, 15 notes in all. How many of each notes?​
san4es73 [151]

Answer:

Total number of notes is 11.

Step-by-step explanation:

Value is 100 rupees…

5x + 20y = 100 and x + y = 11 are the two equations.

We can simplify…

5x + 20 y - 5x - 5y = 100 - 55 = 45

15y = 45 so y = 3

x = 11 - y = 8

So, we have 8 notes of 5 rupees denomination and 3 notes of 20 rupees denomination.

I hope it helps you.

4 0
2 years ago
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What is the measure of the missing angle?
Luda [366]

Answer:

B=23.19

Step-by-step explanation:

First, find the last side of the triangle using the Pythagorean theorem.

a^{2} +b^{2} =c^{2} \\21^{2} +9^{2} =c^{2} \\441+81=c^{2} \\\sqrt[3]{58}=c

Then, find the missing angle, lets name it B.

The angle B can be found using the inverse sine function.

B=arcsin(opp/hyp)

B=arcsin(\frac{9}{\sqrt[3]{58} } )\\B=23.19

8 0
2 years ago
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What is the equation of a horizontal line that has a y-intercept of 3.5?
beks73 [17]
First, recall that the equation of a line is

y = mx+b

where 

m = slope
b = y-int

The key to this question is the details :

Horizontal line ---> This tells you that your slope is 0

y-int = 3.5 -----> In the equation above, b=3.5

Therefore,

y = 0x + 3.5
y = 0 + 3.5
y = 3.5
4 0
3 years ago
A recipe shows that the yeast needed for a bread recipe is 2 1/2ounces. Which of the following decimals is equivalent to this nu
UkoKoshka [18]

Answer:

C. 2.3 repeated

Step-by-step explanation:

1/3 doesn't equal a (what you could say is) regular decimal. It repeats because it does not evenly go into 10 or 100

7 0
3 years ago
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Suppose that a family wants to start a college fund for their child. If you invest in an account that pays 5.5% and want the fun
vazorg [7]
The answer is 17040.34
Check the annuity due formula
7 0
2 years ago
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