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yuradex [85]
3 years ago
15

Determine the first expressions to evaluate the problem.

Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:

31

Step-by-step explanation:

5+9+15+2= 31

by order of pemdas

parentheses

exponents

multiply

divide

add

subtract

first is (4+9)

next is 3^2

third is 8/4

finally you add them all together

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The angle measures 22°, 62°, 118°, and 158° are written on slips of paper. You choose two slips of paper at random.
mylen [45]
Answer: 1/3

There are C(4,2) = 6 ways to choose a pair of numbers.  Only 2 of those pairs are supplementary measures {22, 158} and {62, 118}. The probability is 2/6 = 1/3.


3 0
3 years ago
Help I will give brainliest
scoray [572]

Answer:

43/70

Step-by-step explanation:

Total number of times spun = 14 + 12 + 16 + 15 + 13 = 70

Total number of times spun that yielded a odd number (1,3,5) = 14 + 16 + 13 = 43

The probability of spinning an odd number = total number of spins that yielded 1,3,5 ÷ total number of spins yielding all values from 1 to 5

= 43 / 70

8 0
3 years ago
Which ordered pair (a, b) is the solution to the following system of equations?
Kamila [148]

Answer:

  (-13, -4)

Step-by-step explanation:

It is about as easy to try the solutions as it is to find them from scratch.

__

However, we can determine which one it is by adding twice the second equation to the first.

  (-2a +3b) +2(a -4b) = (14) +2(3)

  -5b = 20

  b = -4 . . . . . . matches the first choice

8 0
3 years ago
How do you solve the proportion7/5=x/3 ??
mote1985 [20]
The way I like to solve proportions is by cross multiplying and dividing. First yo multiply the diagonals and then you divide by the other number. So if your proportion is 7/5 = x/3, your equation would be 7*3/5.  So 7*3 is 21, so your equation is now 21/5.  With some long division, you'll see that 21/5 = 4.2  That's your answer, feel free to ask more questions if you need!!(:
5 0
3 years ago
Read 2 more answers
The cost of 25 litres of petrol is Rs.1400.Find the cost of 30 litres of petrol.​
Leona [35]
Rs.1680

Liter. Rs
————-|————-
25 | 1400
:5( | ):5
5 | 280
x6( | )x6
30 | 1680
7 0
3 years ago
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