2 years ago

CAN ANYONE HELP ME FIND THE ANSWERS TO QUESTION 2 !? ASAP .. DUE IN 15 MINS :(

Mathematics

1 answer:

Debora [2.8K]2 years ago

7 0

Omg if I had my TI calculator I could help you !!

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You leave a 20% tip on your $70 dinner bill. How much was the tip

jonny [76]

$\frac{20}{100} \times70 = \frac{1}{5} \times 70 \\ = 14$
hey hope this helps

5 0

2 years ago

URGENT Match each ratio of the volumes of two solids to the pair of solids it represents.

Anarel [89]

1. cylinder to cone:
(πr^2h)/((1/3)πr^2h) = 3:1

2. sphere to cylinder:
((4/3)πr^3)/(πr^2h) = 4r:3h

3. cone to sphere:
((1/3)πr^2h)/((4/3)πr^3) = h:4r

4. hemisphere to cylinder:
half the ratio of sphere to cylinder = 2r:3h

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3 years ago

a shape with rotational symmetry can be rotated around a point so that all of its characteristics are maintained

kirza4 [7]

The correct answer to this is “True”.

Symmetry signifies balance and form. An object with rotational symmetry will still look the same after a rotation. Since it maintains its shape and figure after being rotated, therefore its characteristics such as length of the diagonals, the angles of each corner, or parallelism of opposite sides will remain the same.

4 0

2 years ago

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The length of a 3D rectangle is 8cm greater than the width and the height is half the length. A total of 108 cm of wire has been

myrzilka [38]

Answer:

L=W+8

(W+8)W=105

W^2+8W=105

W^2+8W-105=0

(W+15)(W-7)=0

W-7=0

3 0

2 years ago

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Two different types of polishing solutions are being evaluated for possible use in a tumble-polish operation for manufacturing i

ad-work [718]

Answer:

p-value: 1.000

There is enough evidence at the 1% level of significance to suggest that the proportions are not equal.

Step-by-step explanation:

We will be conducting a difference of 2 proportions hypothesis test

The hypothesis for this test is:

H0: p1 - p2=0

Ha: p1 - p2 ≠0

(p1 ) = 252/300 = 0.84

(p2) = 195/300 = 0.65

This is a 2 tailed test with a significance level of 1%. So our critical values are: z > 2.575 and z < -2.575

See the attached photo for the calculations for this test

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2 years ago