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Dima020 [189]
3 years ago
10

The length of a quarter is 0.953 inch. round the length of a quarter to the nearest tenth of an inch

Mathematics
1 answer:
liraira [26]3 years ago
6 0

Answer:

1 inch

Step-by-step explanation:

The 9 is in the tenths place so you look to the hundredths place and if the number is greater than or equal to 5 then the 9 can round up.

The hundredths place is 5 so the 9 rounds up and since it can not round up in the tenths place you put the rounding in the front so the answer is 1 inch.

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-90+56<br><br> Plz help me I don’t know what to do
mina [271]

Answer:

-34

Step-by-step explanation:

-90+56= -34

3 0
2 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
2 years ago
PLEASE HELP!! (Sorry picture isn't that great)
andreev551 [17]

I am almost positive that the answer is the first one.

8 0
3 years ago
Read 2 more answers
I tried 8 and 1 and this is probably and easy question but can you pls help
Anarel [89]

Answer:

perimeter is the outside, so count around the outside for the answer, which is 18

the area is correct though so good job

good luck :)

5 0
2 years ago
Evaluate the following rational expression for x equals 7
alexandr1967 [171]
It would be 7x hope this helps
5 0
3 years ago
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