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chubhunter [2.5K]
3 years ago
14

Help please desperate!!

Mathematics
1 answer:
zhenek [66]3 years ago
7 0

Answer:

Step-by-step explanation:

V=\pi r^2h\\=\pi *4^2*3\\=48\pi

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5. Bobby guessed there were 92 jelly beans in a jar. There were actually 107 2 points
skelet666 [1.2K]

Answer: 14%

Step-by-step explanation:

From the question, we are informed that Bobby guessed there were 92 jelly beans in a jar when there were actually 107. The percentage error will be:

= Difference in error / Actual value × 100

= (107 - 92) / 107 × 100

= 15/107 × 100

= 0.14 × 100

= 14%

6 0
3 years ago
What is the length of a diagonal of a square with a side length of 8?
Blizzard [7]
Ok, well a square is basically two triangles, right? the 45 degree right triangle. if you consider the rules for a 45 degree right triangle, you get: x, x, 2sqrt(x)

plugging in 8, you get the diagonal to be 2sqrt(8) or 4sqrt(2)
5 0
3 years ago
Read 2 more answers
Evaluate 2 4ac if b = 5, a = -2, and c = 0​
andreyandreev [35.5K]

Answer:0

Step-by-step explanation:2 4ac

2×4×-2×0=0

7 0
3 years ago
The lesson is 19.2 Angles in inscribed Quadrilaterals
alexdok [17]

Answer:

m<R=44.9,m<S=56.9,m<T=44.9,m<U= 32.9.

Step-by-step explanation:

When two chords are equal then the measure of the arcs are equal.

Chord RU= Chord UT

Or , m arc RU= m arc UT,

3z-4=x+2z+7   Or             z=x+11

Chord RS=Chord ST ,

m arc RS=m arc ST=3x+5

Sum of m arc in a circle =360 degrees.

Or ,

3x+5+3x+5+3z-4+x+2z+7=360

7x+5z+13=360

Substituting z=x+11

7x+5(x+11)+13=360

7x+5x+55+13=360

12x+68=360

12x=292,x=24.3

z=x+11=11+24.3=34.3

m arc RU=marc UT= 3z-4=3(24.3)-4=69

m arc RS =marc ST= 3x+5=3(24..3)+5=77.9

m<R= (marc UT+ m  arc ST)÷2

m<R=(69+77.9)÷2=73.45

m<S= (m arc RU+m arc UT)÷2

m<S= (69+69)÷2=69

m<T=(m arc RU+m arc RS)÷2=73.45

m<U=(m arc RS+m arc m arc ST)÷2=77.9








4 0
3 years ago
To which interval would we restrict f(x) = cos (x-π/4) so that f(x) is invertible?
nadezda [96]

Answer:

The range of x values for which y is unique is 2·π

Step-by-step explanation:

For a function j: X → Y to be invertible, we have that for every y in Y, there is associated only one x which is an element of x

Hence, f(x) = cos(x - π/4) gives

the x intercept at two penultimate points of the graph of cos(x - π/4) are;

x = 2.36, and x = 8.64

x = 3/4·π, and x = 2.75·π = 2\tfrac{3}{4}\cdot \pi

Hence the range of x values for which y is unique is presented as follows

2\tfrac{3}{4}\cdot \pi - \frac{3}{4}\cdot \pi = 2}\cdot \pi

The range of x values for which y is unique = 2·π.

4 0
3 years ago
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