MATHEMATICS MIDDLE SCHOOL

Solve:
2(−n−3)−7(5+2n)

Answers

Answer 1
Answer:

Answer:

-16n-41

Step-by-step explanation:

2(-n-3)-7(5+2n)

First begin by expanding the bracket.  That is, multiplyingthe brackets by 2 and -7 appropriately.

In  doing so we have,

2(-n) x 2(-3) -7(5) x -7 (+2n)

simplifying becomes:

-2n-6-35-14n

collwct like terms becomes -2n-14n-6-35

Final answer becomes Thus: -16n-41
Answer 2
Answer:

Answer:

−16n−41

Explanation

Distribute:

=(2)(−n)+(2)(−3)+(−7)(5)+(−7)(2n)

=−2n+−6+−35+−14n

Combine Like Terms:

=−2n+−6+−35+−14n

=(−2n+−14n)+(−6+−35)

=−16n+−41

Related Questions

I need help with both of those questions
During a sale, The price of a sweater was changed from $20 to $16. What was the percent of the decrease in the price of the sweater?(Please show work:) )
If x=7 and y=-3 12-5xy +9x2y + 15-2y2
Write the number in two other forms 0.253
What is the quotient of 12,228 divided by 24

The temperature at 6:00 a.m. was ‐3.5°C. From 6:00 to 7:00, the temperature increased 2.5°C. From 7:00 to 8:00, it decreased by 0.25°C, and from 8:00 to 11:00, the temperature dropped 3.25°C. Which expression shows the temperature in °C at 11:00 a.m.?

Answers

The expression that shows the temperature in °C is -3.5+2.5+(-0.25)+(-3.25).

Step-by-step explanation:

Step 1:

The initial temperature at 6.00 am was -3.5 °C.

Step 2:

From 6.00 to 7.00 am, the temperature increased by another 2.5°C, so the temperature at 7.00 am was (-3.5 + 2.5) °C.

Step 3:

From 7.00 to 8.00 a.m, the temperature decreased by another 0.25°C, so the temperature at 8.00 am was (-3.5+2.5+(-0.25)) °C.

Step 4:

From 8.00 to 11.00 a.m, the temperature dropped by another 3.25 °C, so the temperature at 11.00 am was (-3.5+2.5+(-0.25)+-(3.25)) °C which is represented by the fourth option.

Answer:

A i did did question on think through math think it is the answer

Step-by-step explanation:

chris and lisa went shopping and spent a total of $25.50. lisa spent $13.50 more than what chris spent. How much did Lisa spend

Answers

$25.50-$12.00=$13.50 

Lisa spent $13.50
Lisa spent 13.50 all together

The probability of a spinner stopping on 3 is 1/8 The probability of the spinner stopping on 6 is 1/8 What is the probability of the spinner stopping on 3 or 6A. 1/16
B. 1/8
C. 1/64
D. 2/8
PLEASE HELP

Answers

Your answer is B 1/8 . 

10. Mr. Guerrero left his house and drove north at an average speed of 40 mph.Two hours later, his daughter Miranda left the house and drove the sameroute as her father, but at an average speed of 48 mph. How far from homewere they when Miranda overtook her father?

Answers

Speed=distance / time  ⇒ distance=time x speed
distance=d
time=t
speed= s

d=s*t

Distance  traveled by Mr Guerrero, when his daugther left the house
Data:
s=40 miles/ hour
t=2 hours
d=40 miles/ hour * 2 hours=  80 miles

Total distance traveled by Mr Guerrero:
d=80 miles + 40 miles/hourt    ⇒d=80+40t      (1)

d=total distance.
s=speed.
t=time spent by Miranda for she overtook her father.

Distance traveled by Miranda.
data:

s=48 miles/ hour
d=total distance.
t=time spent by Miranda for she overtook her father.

d=48 miles/hour * t      ⇒d=48t       (2)

With the equations (1) and (2), we make an system of equations:

d=80+40t
d=48t

We can solve this system of equation by equalization method.

80+40t=48t
80=48t-40t
80=8t
t=80/8=10

d=48t
d=48*10=480

Answer: the thistance will be 480 miles.

How do I solve 1-5+1x(4x4-31)x8

Answers

so you solve (4*4-31) first which is -15 and this equation now is 1-5+1*-15*8, and the answer is going to be -124
You solve what is in the paratense first

A rectangular swimming pool can hold 1408 cubic feet of water. the pool is 22 feet long and has a depth of 4 feet. what is the width of the pool?a. 16 ft
b. 64 ft
c. 88 ft
d. 352 ft

Answers

Depth is the same thing as height for a pool.  Volume is l*w*h.
The total amount of water a pool can hold is the volume.
so take the total volume (1408) and divide it by 22 and 4.
1408/4/22=16
The width is 16 ft.
the width of the pool is 16ft because 22*4*16=1408
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