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Flauer [41]
3 years ago
13

Suppose we must choose 4 rooms out of

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

C. A systematic sample

Step-by-step explanation:

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4n+6+n-2 what is the equivalent expression
xxMikexx [17]

Answer:

the answer is 5n+8

Step-by-step explanation:

4n+n=5n

6+2=8

6 0
3 years ago
i will give brainliest A person who weighs 240 pounds burns 180 calories per mile of running.A person who weighs______pounds, bu
Vedmedyk [2.9K]

Set up a ratio:

240/180 = X/36

Cross multiply:

240 * 36 = 180x

8640 = 180x

Divide both sides by 180:

X = 8640 / 180 = 48

The person would weigh 48 pounds.

7 0
3 years ago
Read 2 more answers
Write each expression in terms of sines and/or cosines and then simplify.
Sedaia [141]
Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
8 0
3 years ago
Solve 2x + 3y = C, for y
natta225 [31]

Answer:

y= \frac{c-2x}{3}

Step-by-step explanation:

2x+3y=C

isolate y

3y=C-2x

y= \frac{c-2x}{3}

6 0
3 years ago
Read 2 more answers
Steven just got a new summer job painting fences in his neighborhood. He will be paid $7.25 an hour. His first customer paid him
mote1985 [20]

Answer:

a). The equation; 7.25 h-36.25=0

b). total number of hours Steven work=5 hours

Step-by-step explanation:

Part A

The expression for the total money earned is as follows;

T=E×h

where;

T=total earnings

E=earnings per hour

h=number of hours worked

In our case;

T=$36.25

E=$7.25

h=h

replacing;

36.25=(7.25×h)

36.25=7.25 h

The equation would be; 7.25 h=36.25, or 7.25 h-36.25=0

Part B

7.25 h=36.25

h=36.25/7.25

h=5

total number of hours Steven work=5 hours

5 0
3 years ago
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