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2 years ago

The area of a rectangle is Aww (1) What is the area of a rectangle that has a width of 34 and a length of 10

Mathematics

1 answer:

sweet-ann [11.9K]2 years ago

8 0

340

Length x width = area

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Make x the subject of the formula y=ax

SOVA2 [1]

X = y/a (Isolate x by itself)

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3 years ago

15 DIVIDED 6 2/3 A. 2 3/4 B.100 C.100 1/4 D.2 1/4 HELP!!!!!!

Andrew [12]

D, 2 and 1/4 or 2.25

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4 years ago

Semielliptical Arch Bridge An arch for a bridge over a highway is in the form of half an ellipse. The top of the arch is 20 feet

photoshop1234 [79]

Answer:

the span of the bridge is 73.7 feet

Step-by-step explanation:

The equation of an ellipse with a vertical major axis(i.e major axis parallel to y axis) is given by:

$\frac{(x-h)^{2} }{b^{2} } + \frac{(y-k)^{2} }{a^{2} }= 1$ a>b

where (h,k) are the coordinates of the center of the ellipse, a is the length of the major axis and b is the length of the minor axis

For this problem, the center of the ellipse (h,k) = (0,0)

Therefore:

$\frac{(x)^{2} }{b^{2} } + \frac{(y)^{2} }{a^{2} }= 1$

The top of the arch is 20 feet above the ground level (the major axis), therefore a=20

length of the major axis = 2a= 2*20 = 40

$\frac{x^{2} }{b^{2} } + \frac{y^{2} }{20^{2} }= 1\\\frac{x^{2} }{b^{2} } + \frac{y^{2} }{400 }= 1$

The coordinates of the ellipse (x,y) = (28,13)

$\frac{28^{2} }{b^{2} } + \frac{13^{2} }{400 }= 1$

$\frac{28^{2} }{b^{2} } + 0.4225= 1$

$\frac{784 }{b^{2} } = 0.5775$

b² ≅ 1358

b≅36.85

Length of minor axis (2b) = 73.7 feet.

the span of the bridge is 73.7 feet

7 0

4 years ago

1. Malia thinks she and her friends should sell the wristbands for $2.50 each. She sells 4 wristbands on the first day of the fu

Black_prince [1.1K]

You can Rule out awnser c

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3 years ago

Use the following function to find f(9) f(x) = 6x f(9)=

san4es73 [151]

Answer:

f(9)=54

Step-by-step explanation:

Subsitute 9 for x in f(x)=6x

$f(9)=6(9)=54$

6 0

3 years ago

Read 2 more answers