Brian wetherington - dodea-am 7th grade module 2 post-assess
ch expressions are equivalent to -3 - (7.5 + 4)?
select all that apply.
а
(7.5 + 4) – 3
- (7.5 + 4) – 3
j
c
-(7.5+ 4) +3
e
e
g
-3 - (4 +7.5)
-(3 – 7.5) + 4
3+ (-7.5 - 4) ▼
-3+(-7.5+4)

i will pick c put check it over to be sure

step-by-step explanation:

mk./km: lm

step-by-step explanation:

,mlmlm

; mk

lk

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west