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MAXImum [283]
3 years ago
7

What is the answer to 20=5x 10y?

Mathematics
1 answer:
My name is Ann [436]3 years ago
5 0
I hope this helps you 5x=20 x=4 10x=10×4=40
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I need help on a mathematics question. I need an explanation.
romanna [79]
Start by dividing both sides by 2 to get log(x)= \frac{1}{2}log(64).  Doing the math on the right, keeping in mind that logs have an unwritten base of 10, gives us log_{10} (x)=.903089987.  Rewriting this in exponential form is 10^{.903089987}=x.  That means that x = 8.  Not negative, only positive.
4 0
3 years ago
A display case of DVDs are marked 19 for $10. If Larry has $50, how many DVDs can Larry get? (Assume no tax or other fees.)
Delicious77 [7]

Answer:

95

Step-by-step explanation:

19 DVDs for 10 dollars and he has 50 dollars well 50 dollars is just 5 groups of 10 so just 19 x 5 = 95

5 0
2 years ago
In triangle ΔABC, ∠C is a right angle and CD is the height to
Zina [86]

Answer:

m\angle CDB=90\\m\angle CBD=90-\alpha\\m\angle BCD=\alpha\\\\m\angle CDA=90\\m\angle CAD=\alpha\\m\angle ACD=90-\alpha

Step-by-step explanation:

The triangles are drawn below.

CD is perpendicular to AB as CD is height to AB.

Therefore, angles m\angle CDB=m\angle CDA=90°

So, triangles ΔCBD and ΔCAD are right angled triangles.

Now, from the right angled triangle ΔABC,

m\angle A+m\angle B =90\\\alpha+m\angle B=90\\m\angle B=90-\alpha

From ΔCBD,

m\angle CBD is same as m\angle B.

So, m\angle CBD=90-\alpha

m\angle BCD+m\angle BDC =90\\m\angle BCD+90-\alpha=90\\m\angle BCD=\alpha

Now, from ΔCAD,

m\angle CAD is same as m\angle A

So, m\angle CAD=\alpha

m\angle CAD+m\angle ACD =90\\\alpha+m\angle ACD=90\\m\angle ACD=90-\alpha

Hence, the unknown angles of both the triangles are:

m\angle CDB=90\\m\angle CBD=90-\alpha\\m\angle BCD=\alpha\\\\m\angle CDA=90\\m\angle CAD=\alpha\\m\angle ACD=90-\alpha

5 0
2 years ago
What is the answer to this question and how would I solve it for when I have another question like it
Vesna [10]

Answer:

12.5663706144

If necessary, and if your system/teacher allows it, just keep it down to 1-3 decimals.

Hope I could help! :D

3 0
2 years ago
Read 2 more answers
Evaluate the expression m÷n for m=2 and n=14.
Sever21 [200]

Answer:

1/7

Step-by-step explanation:

Plug in 2 for m, and 14 for n in the expression:

m/n = 2/14

Simplify. Factor out common factors from both the numerator and denominator:

(2/14)/(2/2) = 1/7

1/7 is your answer.

~

3 0
3 years ago
Read 2 more answers
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