2 years ago

Simplify. 17 – (–8) – 9 34 18 0 16

Mathematics

1 answer:

Tanya [424]2 years ago

7 0

<span>17 – (–8) – 9
= 17 + 8 - 9
= 25 - 9
= 16

answer is 16</span>

You might be interested in

If a 12-student class averaged 90 on a test, and a 20-student class averaged 80 on the test, then all 32 students averaged

Alexxx [7]

Let the marks of the students in class 1 be

$m_1, m_2, ....., m_1_2$

the average of these 12 marks is 90, so

$\frac{m_1+ m_2+ .....+ m_1_2}{12}=90$

which means

$m_1+ m_2+ .....+ m_1_2=90*12=1080$

similarly, let $n_1, n_2, ....., n_2_0$ be the marks of the students in the second class,

so $\frac{n_1+ n_2+ ..... n_2_0}{20}=80$

which means $n_1+ n_2+ ..... n_2_0=80*20=1600$

The 32 students averaged:

$\frac{(m_1+ m_2+ .....+ m_1_2)+(n_1+ n_2+ ..... n_2_0)}{12+20}= \frac{1080+1600}{32}= \frac{2680}{32}= 83.75$

5 0

3 years ago

Read 2 more answers

52:10

ziro4ka [17]

is 4 the answer

16 square us 4 nor 8

3 0

2 years ago

Determine the sum: (14abc2 + 12a2b + 16b2c) + (−3abc2 + 2b2c).

Alenkinab [10]

The answer is 11abc^2 + 12a^2b + 18b^2c because:
14abc^2-3abc^2 is 11abc^2
12a^2b + 0 = 12a^2b
16b^2c +2b^2c = 18b^c

4 0

3 years ago

Solve 7 plus x equals 13

Paul [167]

7 + 6 = 13, so x = 6

7 0

3 years ago

Read 2 more answers

twice a number minus 4 is less than three times the number. (define a variable, write an inequality, and solve for the problem)

Simora [160]

X will represent unknown
2x-4<3x
treat the < sign as a = sign
2x-4=3x
subtract 2x form both sides
-4=x
put the < sign back
-4<x
-4 is less than than x or
x is greater than -4

4 0

2 years ago

Read 2 more answers