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patriot [66]
3 years ago
10

3 people traveled 27 miles total and person number 2 went 6 miles more than person number 1 and person number 3 went 3 miles mor

e than person number 2. Solve problem algebraically
Mathematics
2 answers:
german3 years ago
5 0

Answer : The distance travelled by person 1, person 2 and person 3 is, 4 miles, 10 miles and 13 miles respectively.

Step-by-step explanation :

Let the distance travelled by person number 1 = x miles

Then, the distance travelled by person number 2 = (x+6) miles

And, the distance travelled by person number 3 = (x+6) + 3 miles = (x+9) miles

Total distance travelled by 3 persons = 27 miles

As per question,

x + (x+6) + (x+9) = 27

3x + 15 = 27

3x = 27 - 15

3x = 12

x = 4

The distance travelled by person number 1 = x miles = 4 miles

The distance travelled by person number 2 = (x+6) miles = (4+6) miles = 10 miles

The distance travelled by person number 3 = (x+9) miles = (4+9) miles = 13 miles

gtnhenbr [62]3 years ago
3 0

Answer:

3 miles,9 miles and 15 miles

Step-by-step explanation:

GIVEN: 3 people traveled 27 miles total and person number 2 went 6 miles more than person number 1 and person number 3 went 3 miles more than person number 2.

TO FIND: Solve problem algebraically.

SOLUTION:

Let the distance traveled by person 1 be x

distance traveled by person 2  =x+6

distance traveled by person 3=2x+9

According to the question

Total distance traveled by all =27

x+x+6+2x+9=27\implies4x+15=27

\implies 4x=12

\therefore x=3

first person traveled =3\text{ miles}

Second person traveled =x+6=9\text{ miles}

Third person traveled =2x+9=15\text{ miles}

Hence person number 1,2 and 3 traveled 3 miles,9 miles and 15 miles respectively.

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A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1863 mailboxes t
forsale [732]

Answer:

3433 m²

Step-by-step explanation:

From the image, we have a rectangular box without cover and half a cylinder on top.

Formula for surface area of rectangular box with top is;

S = 2(lh + wh + lw)

From the image,

l = 0.6 m

w = 0.4 m

h = 0.55 m

Thus;

S = 2((0.6 × 0.55) + (0.4 × 0.55) + (0.6 × 0.4))

S = 1.58 m²

Now, since the top is not included for this figure, then;

Surface area of this rectangular box is;

S1 = 1.58 - (lw) = 1.58 - (0.4 × 0.6) = 1.34 m²

Surface area of a cylinder is;

S = 2πr² + 2πrh

r is radius and in this case = 0.4/2 = 0.2 m

h = 0.6

S = 2π(0.2² + (0.2 × 0.6))

S = 1.005 m²

Since it is half cylinder, then we have;

S2 = 1.005/2

S2 = 0.5025 m²

Total surface area; S_t = S1 + S2

S_t = 1.34 + 0.5025

S_t = 1.8425 m²

This is the surface area of one mail box.

Thus, for 1863 mailboxes, total surface area is;

S = 1863 × 1.8425 = 3432.5775 m²

Approximating to the nearest Sq.m gives;

S = 3433 m²

6 0
3 years ago
Which equation passes through the points ( -4,1 ) (-8,13 )
Mashutka [201]

Answer:

y= = -3x -11

STANDARD FORM: 3x+y= -11

Step-by-step explanation:

4 0
4 years ago
TIME REMAINING
ExtremeBDS [4]
9 because 9x3=27 or 27/3=9
5 0
3 years ago
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Someone help me plz!!
likoan [24]

Answer: x=15

Step-by-step explanation:

Since these are supplementary angles, we know that if we add them together we would get 180 deg. so....

(7x-10)+ (6x-5)=180

Kay so now we can combine like terms.

13x-15=180

Now we can add 15 to both sides.

13x=195

Finally Divide 13 on both sides.

X would then now equal 15.

6 0
3 years ago
Look at the figures. How can you prove these triangles are congruent?
NNADVOKAT [17]

Answer:

You can use the Side-Angle-Side Postulate.

Step-by-step explanation:

The Side-Angle-Side (or SAS) Postulate basically states that if two sides of two triangles and the included angle are congruent, the two triangles are congruent.

6 0
3 years ago
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