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3 years ago

Evaluate 4+8 divide by 2 x(6-3)

Mathematics

1 answer:

stepladder [879]3 years ago

3 0

Answer:

Step-by-step explanation:

= 4+8/2×(6-3)

= 12/2×6-2×3

= 12/12-6

= 12/6

= 2

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How do you do these

Paraphin [41]

Hope you find you're answer

5 0

3 years ago

What number must you add to complete the square x^2+4x=12

Keith_Richards [23]

Answer:

Step-by-step explanation:

The form ax²+bx+c=d to find the number to add you do

(b/2)² so

(4/2)²=

6 0

2 years ago

Read 2 more answers

help me if u can and pls don't answer within stupid things like sry I need points or whatever I will report u if u did that and

Ira Lisetskai [31]

Step-by-step explanation:

14) percentage of increase

% of increase = (new - original)/original × 100

= (40 - 35)/35 × 100

= 5/35 × 100

= 14.285% = 14% increase

15) percentage of decrease

% of decrease = (original - new)/original × 100

= (16 - 10)/16 × 100

= 6/16 × 100

= 37.5% = 38% decrease

16) percentage of increase

% of increase = (new - original)/original × 100

= (73 - 27)/27 × 100

= 46/27 × 100

= 170.37% = 170% increase

17) percentage of decrease

% of decrease = (original - new)/original × 100

= (92 - 21)/21 × 100

= 71/21 × 100

= 338.10% = 338% decrease

18) percentage of decrease

% of decrease = (original - new)/original × 100

= (21.2 - 10.8)/21.2 × 100

= 10.4/21.2 × 100

= 49.06% = 49% decrease

19) percentage of increase

% of increase = (new - original)/original × 100

= (25 - 11)/11 × 100

= 14/11 × 100

= 127.27% = 127% increase

20) percentage of increase

% of increase = (new - original)/original × 100

(76 - 68)/68 × 100

8/68 × 100 = 11.77% = 12%

21) percentage of increase

% of increase = (new - original)/original × 100

= (40 - 21)/21 × 100

= 19/21 × 100

= 90.47% =90%

22) New car = AED 45,500

Used car = x

New car = (25% of x) + x

45,500 = (25x/100) + x

45,500 = (25x + 100x)/100

45,500 = 125x/100

45,500 × 100 = 125x

4,550,000 = 125x

x = 4,550,000/125 = 36,000

x = AED 36,000

7 0

3 years ago

Stan drives 30 minutes a day commuting to and from work. He drove h hours this week. How many days did he work?

Maksim231197 [3]

Stan worked 2h days this week

Step-by-step explanation:

The given is:

Stan drives 30 minutes a day commuting to and from work
He drove h hours this week

We need to find how many days he worked

∵ Stan drives 30 minutes a day

∵ 1 hour = 60 minute

∴ 30 minutes = $\frac{30}{30}=\frac{1}{2}$ hour

∴ Stan drives $\frac{1}{2}$ hour a day

∵ He drove h hours this week

- To find the number of days that he worked divide the total

hours he drove in this week by the hour he drives in a day

∴ The number of days = h ÷ $\frac{1}{2}$

- Change the division sign to multiplication sign and reciprocal the

fraction after the division sign

∵ The reciprocal of $\frac{1}{2}$ = $\frac{2}{1}$ = 2

∴ The number of days = h × 2

∴ The number of days = 2h

Stan worked 2h days this week

Learn more:

You can learn more about word problems in brainly.com/question/2977815

#LearnwithBrainly

6 0

3 years ago

Sheila and Lenore were driving to their grandmother’s house. Lenore left 1 hour after Sheila. Sheila drove at a rate of 45mph, a

solong [7]

Answer:

It'll take 3 h before Lenore catch up to Sheila.

Step-by-step explanation:

To solve this problem we first need to calculate the relative speed between the two. Since they're going at the same direction we need to subtract their individual speeds if their directions were oposite we would have to sum their speeds. In this case we have:

relative speed = Lenore speed - Sheila speed

relative speed = 60 - 45 = 15 mph

Since Sheila left 1 h before Lenore and she drove at a rate of 45 mph, then she had covered a distance of:

distance = time*speed = 1*45 = 45 miles

Before Lenore left, so in order for Lenore to catch up to Sheila she needs to cover that distance at a relative speed of 15 mph.

time = distance/(relative speed) = 45/15 = 3 h

It'll take 3 h before Lenore catch up to Sheila.

4 0

3 years ago