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Ad libitum [116K]
3 years ago
8

Which operation is done first to evaluate this expression: 5 + 7 x 2 - 9

Mathematics
2 answers:
Marta_Voda [28]3 years ago
7 0

Answer:

Multiply the 7 and the 2

7 x 2

Step-by-step explanation:

5 + 7 x 2 - 9

PEMDAS

P there are no parentheses

E  there are not exponents

MD  multiply and divide from left to right

5 + 7 x 2 - 9

Lelechka [254]3 years ago
4 0

Answer:

7*2 and then you would go from left to right, 7*2 =14 then it would be 5+14-9, then 19-9=10 and there you go.

Step-by-step explanation:

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Hi can someone please answet this question for me im a bit confused
Jobisdone [24]

Answer:

a)

Step-by-step explanation:

for each point (A, B, C) reduce the 'x-value' by two and reduce the 'y-value' by 7

for example, for point A:

to find A':  (-6, -7) would be (-6-2, -7-7)  which is (-8, -14)

3 0
3 years ago
HELLER HELLPPPP MEHHHH
ivolga24 [154]

Answer:

I think the answer is D.

Step-by-step explanation:

Five plus two times a number means 5 + 2n vice versa.

4 0
3 years ago
Read 2 more answers
Determine the solution to f(x) = g(x) using the following system of equations: (5 points) f(x) = 3x − 23 g(x) = −4.5x + 7
jeka94

Answer:

(The solution is (4, -11).

Step-by-stp explanation:

Let f(x) = g(x) = y:

y = 3x − 23

y = -4.5x + 7     Subtract the second equation from the first to eliminate y:

0 = 7.5x - 30

7.5x = 30

x = 4

Plug this into the first equation:

y = 3(4) - 23

y =  -11.

5 0
3 years ago
Can someone help please.
snow_lady [41]
<span>By the Pythagorean theorem
AB = </span>√(12²+5²) = √169 = 13 units

\frac{AD}{AB} =  \frac{BD}{BC} \ \to \ BC= \frac{AB*BD}{AD}= \frac{13*12}{5}=   31.2 \ units
8 0
3 years ago
The sum of 2 numbers is 38. one number is 10 more than the other.
son4ous [18]

Answer:

24, 14

Step-by-step explanation:

x + y = 38

x = 10 + y

You can substitute (10+y) into the top equation where the x is.

10 + y + y = 38

10 + 2y = 38

2y = 28

y = 14

Now plug 14 in for y in either equation to get x

x = 10 + 14

x = 24

8 0
3 years ago
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