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Anna007 [38]
3 years ago
9

3 sevenths 2 sevenths equals

Mathematics
2 answers:
Marrrta [24]3 years ago
8 0
The answer is 5 sevenths because 3 + 2 = 5.
Schach [20]3 years ago
5 0
3 sevenths plus 2 sevenths equals 5 sevenths

3/7 + 2/7 = 5/7 because you're adding 3 and 2 which gives you 5.
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The average age of the 8 people in room A is 25. The average age of the 12 people in room B is 50. If the people in the 2 rooms
eduard
The average would be the total amount divided by the 2 groups, so the answer would be 37.5 years old.
7 0
3 years ago
Convert 0.79 tons to pounds?
mr Goodwill [35]
.79 tons equals out to 1,580 pounds . Hope this helps :)
7 0
3 years ago
Read 2 more answers
A bridge is built in the shape of a parabolic arch. The bridge arch has a span of 166 feet and a maximum height of 40 feet. Find
scoray [572]

Answer:

38.27775 feet

Step-by-step explanation:

The bridge has been shown in the figure.

Let the highest point of the parabolic bridge (i.e. vertex of the parabola) be at the origin, O(0,0) in the cartesian coordinate system.

As the bridge have the shape of an inverted parabola, so the standard equation, which describes the shape of the bridge is

x^2=4ay\;\cdots(i)

where a is an arbitrary constant (distance between focus and vertex of the parabola).

The span of the bridge = 166 feet and

Maximum height of the bridge= 40 feet.

The coordinate where the bridge meets the base is A(83, -40) and B(-83, -40).

There is only one constant in the equation of the parabola, so, use either of one point to find the value of a.

Putting A(83,-40) in the equation (i) we have

83^2=4a(-40)

\Rightarrow a=-43.05625

So, on putting the value of a in the equation (i), the equation of bridge is

x^2=-172.225y

From the figure, the distance from the center is measured along the x-axis, x coordinate at the distance of 10 feet is, x=\pm 10 feet, put this value in equation (i) to get the value of y.

(\pm10)^2=-172.225y

\Rightarrow y=-1.72225 feet.

The point P_1(10,-1.72225) and P_2(-10,-1.72225) represent the point on the bridge at a distance of 10 feet from its center.

The distance of these points from the x-axis is d=1.72225 feet and the distance of the base of the bridge from the x-axis is h=40 feet.

Hence, height from the base of the bridge at 10 feet from its center

= h-d

=40-1.72225=38.27775 feet.

8 0
3 years ago
Help I’m dumb and it’s due soon.
egoroff_w [7]

Answer:

Options A, C and D are correct ones.

Step-by-step explanation:

Options A, C and D are correct.

3 0
3 years ago
During my three-week stay in Walla Walla, Washington, it rained for 7 days, it was sunny for 11 days, and it was overcast withou
Gre4nikov [31]
Rain : sunny : overcast 
7:11:3

7x + 11x + 3x = 366
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x = 366/21
x = 17.43

7(17.43) = 122.01 days rain
11(17.43) = 191.73 days sunny
3(17.43) = 52.29 days overcast
4 0
3 years ago
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