Help me ASAP!!!!!!!!!

Mathematics

2 answers:

grigory [225]3 years ago

7 0

Answer to the attachment is:

A) 8
B) 64

Misha Larkins [42]3 years ago

5 0

Answer:

Step-by-step explanation:

A)8

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Luke does 10 spelling test, each out of 10 marks. Luke scored his worse result on the first test and then always either improved

Anna11 [10]

Because the average is 7.7, his total points are equal to 7.7*10=77.

Because 7*10<77<8*10, Luke cannot have scored 8 10s. We now seek to prove that he can score 7 tens.

This leaves him with three tests left, that sum to 7 marks. There are clearly many ways to arrange this - for example, 2, 3, and 3 on the first three tests, then ten on all seven other tests. As this shows that 7 10s works and we have proven that 8 10s does not work, 7 is the maximum amount of 10s Luke could have scored.

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4 years ago

What is 2,163 to the nearest thousand?

user100 [1]

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8 0

3 years ago

Read 2 more answers

Pls help.

Aleonysh [2.5K]

The point C at a coordinate of (-3, 4) is the center of dilation of shapes WXYZ to W'X'Y'Z'

<h3>How to determine the center of dilation?</h3>

The coordinates are given as:

W = (-4, 3) X = (-2, 3) Y = (-4, 1) Z = (-2, 1)
W' = (-6, 1) X' = (0, 1) Y' = (-6, -5) Z' = (0, -6)
A = (-5, 4) B = (-3, 6) C = (-3, 4) D = (-1, 4)

Next, we plot the points on a coordinate plane

From the plane (see attachment), we can see that the point C at a coordinate of (-3, 4) is at the center of both shapes, and it is 1 unit from WXYZ and 3 units from W'X'Y'Z'.

Hence, the point C is the center of dilation