Ask question

Ask question

All categories

3 years ago

9

A plot of land is in the shape of a triangle. If one side is X meters, a second side Is (5x-2) meters and a third side is (7x-4)

meters, express the perimeter of the lot as a simplified expression in X.

2 answers:

lukranit [14]3 years ago

6 0

Perimeter = x + 5x - 2 + 7x - 4

= 13x - 6 meters answer

Anvisha [2.4K]3 years ago

4 0

$P(x)=x+5x-2+7x-4$
$P(x)=13x-6$

Hope this helps !

Photon

You might be interested in

Vectors...<br><br> Let u = <-3, -5>, v = <-3, 1>. Find u + v.

Anni [7]

-3 + -3 = 0
-5 + 1 = -4
vector = < 0,-4 >

3 0

3 years ago

During a blizzard it snowed 5 and 8/10in after a week the sun had melted 3 and 1/2 inches of snow how many inches of snow is lef

WITCHER [35]

$2\frac{3}{10}$ inches of snow is left

<em><u>Solution:</u></em>

Given that,

From given,

$Original\ amount\ of\ snow = 5\frac{8}{10}\ inches = \frac{10 \times 5 + 8}{10} = \frac{58}{10}\ inches$

$Sun\ melted = 3\frac{1}{2}\ inches = \frac{2 \times 3 + 1}{2} = \frac{7}{2}\ inches$

<em><u>how many inches of snow is left</u></em>

Snow left = original amount of snow - sun melted

$Snow\ left = \frac{58}{10} - \frac{7}{2}\\\\Snow\ left = \frac{58}{10} - \frac{7 \times 5}{2 \times 5}\\\\Snow\ left = \frac{58}{10} - \frac{35}{10}\\\\Snow\ left = \frac{58 - 35}{10}\\\\Snow\ left = \frac{23}{10}\\\\\In\ mixed\ fractions\\\\Snow\ left = 2\frac{3}{10}$

Thus $2\frac{3}{10}$ inches of snow is left

3 0

3 years ago

A school choir has 80 students; 36 of them are in seventh grade. Also, 40 students in the choir are girls; 18 of them are in sev

Sati [7]

B. 29/40

40-18=22
22+36=58/80
58/2=29
80/2=40

7 0

3 years ago

Read 2 more answers

In square ABCD, AC = 6x + 10, and BD = 10x + 2. What is the length of AC?

Oksanka [162]

Answer:

B) 22

Step-by-step explanation:

AC = BD

6x+10 = 10x+2

simplify:

subtract 6x and 2 from both sides:

4x = 8

x = 2

then:

AC = 6(2)+10 = 22

6 0

2 years ago

Read 2 more answers

Mrs Dang drove her daughter to school at the average speed of 45 miles per hour. She returned home by the same route at the aver

drek231 [11]

Answer: Time it took her to get to the school is 0.6 hours

The distance of the school from their home is 27 miles

Step-by-step explanation:

Mrs Dang drove her daughter to school at the average speed of 45 miles per hour.

Let x miles = distance from the school to their home.

Distance = speed × time

Time = distance / speed

Time used in going to school will be

x/45

She returned home by the same route. This means that distance back home is also x miles.

She returned at an average speed of 30 miles per hour.

Time used in returning home from school will be x/30

x/45

If the trip took one half hour, then the time spent in going to school and the time spent in returning is 1 1/2 hours = 1.5 hours. Therefore

x/30 + x/45 = 1.5

(15x + 10x) /450 = 1.5

15x + 10x = 450 × 1.5 = 675

25x = 675

x = 675/25 = 27

Time it took her to get to the school will be x/45

= 27/45 = 0.6 hours

8 0

3 years ago