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andreyandreev [35.5K]
3 years ago
10

Mary said, "Four times my age reduced by thirty is six. How old am I?

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0

Answer:

9

Step-by-step explanation:

I said so

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Please answer 4 - 9 will mark brainlyist
miv72 [106K]

There are 180 degrees in a triangle

4. 38+38= 76 degrees

180-76=104

Isosceles, Obtuse

5. 65+ x+x=65

Well we know one of the x

It is 90 degrees because it is a right angle

65+90=155

180-155=25

Scalene, Right triangle

6. 71+45= 116

180-116=64

7.  Scalene, acute

8. 126+22=148

180-148=32

Scalene, Obtuse

9. 50+90=140

180-140=40

Right angle,  Scalene

Please let me know if i got anything wrong

8 0
3 years ago
(adapted from Ross, 2.37) Your math professor gives you a set of 10 problems and tells you that the final exam will consist of a
soldier1979 [14.2K]

Answer:

(a) 1/2

(b) 9/10

Step-by-step explanation:

Probability is given by number of possible outcomes ÷ number of total outcomes

(a) Number of possible outcomes = 5 questions, number of total outcomes = 10 questions

Probability (I answer all 5 problems correctly) = 5/10 = 1/2

(b) Probability (I answer at least 4 of the problems correctly) means I either answer 4 of the problems or all 5 problems correctly = 4/10 + 5/10 = 9/10

3 0
3 years ago
Read 2 more answers
Helpppppp pros only helppppppp me plzzzzzzzzzzz ill reporte you if you do bad qweshtones
nadya68 [22]

Answer:

A

Step-by-step explanation:

We are looking for 2 numbers with a product of -35 and a sum of -2. These are -7 and 5, so the factored version would be (w + 5)(w - 7), or A.

5 0
3 years ago
3m + 5 = 8 modeled by algebra tiles
Lesechka [4]
3m+5=8
subtract 5 from both sides
3m=3
divide both sides by 3
m=1

I hope I helped! :)
4 0
3 years ago
Read 2 more answers
Find the PERCENT of change.<br> 20 dogs to 5 dogs
aliya0001 [1]

Answer:

75%

Step-by-step explanation:

20-5=15 - change in numbers

15/20×100%= 75%

3 0
3 years ago
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