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postnew [5]
3 years ago
13

Help Please..

Mathematics
1 answer:
Yuri [45]3 years ago
8 0
<span>12x^2 − 96x + 189 = 0
3 (2x-7) </span>(2x-9)<span>= 0
</span>2x - 7 = 0; x = 7/2 = 3.5<span>
2x - 9 =0; x = 9/2 = 4.5

answer
x = 3.5 and x =4 .5

</span>
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Find the sum of the exterior angles, one at each vertex, of a heptagon​
Vesnalui [34]
Since the sum of the exterior angles of any polygon is going to always be 360 u can take 360 and divide that by the number of sides which is 7. This gives u 51.4 degrees rounded to the nearest tenth for each exterior angle. PS. Roblox Rocks
8 0
3 years ago
Two people (A and B) travel from X and Y along different routes. their journeys each take the same amount of time. a’s route is
Trava [24]

Answer:

a’s average speed is 60km/h

Step-by-step explanation:

x = a’s average speed

60/40 = 90/x

Cross multiplication:

60x = 40x90

60x=3600

Divide both sides  by 60

x= 60

4 0
2 years ago
a(x+b)=4x+10 in the equation above a and b are constants. if the equation has infinitely many solutions for X, what is the value
xeze [42]

Answer:

b= \frac{5}{2}

Step-by-step explanation:

Given

a(x+b)=4x+10\\ax+b= 4x+10\\

Now we know that system has infinite solution for x

\frac{a_1}{a_2}=\frac{b_1}{b_2}

in above equation.

a_1=a, a_2=4, b_1=ab,b_2=10\\

∴\frac{a}{4}=\frac{ab}{10}\\\therefore b=\frac{10\times a}{4\times a}=\frac{5}{2}

7 0
3 years ago
Can someone help me. On number 10
Romashka-Z-Leto [24]

Step-by-step explanation:

4 H (Hundreds)

5 T(tens)

9 ones

3x3= 9

50x3= 150

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add 300+150+9= 459

4 0
3 years ago
A rectangular sheet of metal has a perimeter of 82 inches. Its area is 348 square inches. What are the dimensions of the sheet?
Georgia [21]

The area of a 2D form is the amount of space within its perimeter. The length of the rectangle is 29 inches and the width of the rectangle is 12 inches.

<h3>What is an area?</h3>

The area of a 2D form is the amount of space within its perimeter. It is measured in square units such as cm², m², and so on. To find the area of a square formula or another quadrilateral, multiply its length by its width.

Let the width of the sheet be represented by x and the length be represented by y.

Area = x × y

348 = xy

x = 348/y

Perimeter = 2(x+y)

82 = 2(x+y)

41 = x + y

41 = (348/y) + y

0 = y² - 41y + 348

y = 29, 12

Therefore, the length of the rectangle is 29 inches and the width of the rectangle is 12 inches.

Learn more about the Area:

brainly.com/question/1631786

#SPJ1

7 0
2 years ago
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