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arlik [135]
3 years ago
5

Answer 2 questions about equations A and B.

Mathematics
1 answer:
Otrada [13]3 years ago
8 0

Answer:

B.

Step-by-step explanation:

I'm not sure how to answer the 2. question

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When factored into primes 2020=2^2*5^1*101^1.How many positive non-prime factors does 2020 have?
valentinak56 [21]

Answer:

balls

Step-by-step explanation:

3 0
2 years ago
The sum of all three numbers is 12. The sum of twice the first number, 4 times the second number, and 5 times the third number i
DaniilM [7]

Answer:

The numbers are 7, 4 and 1

Step-by-step explanation:

Let the numbers =x, y, z.

The sum of all three numbers is 12, x+y+z=12--------i

The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii

The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii

Now, from (i),z =1-x-y--------iv

substitute (iv) in (ii),

2x+4y+5(12-x-y)=35

2x+4y+60-5x-5y=35

collect like terms

-3x-y=-25

that is, 3x-y=25--------v

solving (iii) and (v) simultaneously (add iii and v), we have

11x=77

divide both sides by 11 to obtain x=7

Put x=7 in (v)

3(7)+y=25

21+y=25

implies y=25-21=4

put x=7 and y=4 in (iv)

z=12-7-4=1

Hence, the numbers are 7, 4 and 1.

4 0
3 years ago
Order of operations solve 1/3+4/9*12=
OlgaM077 [116]
You would use PEMDAS, which means Parenthesis, exponents, multiplication, division, addition" and then subtraction. You would solve the problem in that order
6 0
3 years ago
Read 2 more answers
Kyle`s phone bill is $45 per month. how much does he have to pay for half a year of phone service
ArbitrLikvidat [17]

Answer:

$270

Step-by-step explanation:

Its simply 45 times 6 months

4 0
3 years ago
Can someone help? 25 points
tigry1 [53]

Answer:

Triangle A: acute

Triangle B: acute

Triangle C: obtuse

Triangle D: right

Step-by-step explanation:

acute= less than 90 degrees each angle

obtuse=more than 90 degrees for one angle

right=equal exactly 90 degrees for one angle

5 0
3 years ago
Read 2 more answers
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