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2 years ago

Rafiq compares the

Mathematics

1 answer:

Furkat [3]2 years ago

5 0

Answer:

Hey there!

Rafiq's error was that the other number is also changing. He had 4 x 8 and if he had 8 x 8, that would be twice as much, but he used 8 x 12 instead, and 12 is not 8.

Let me know if this helps :)

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6. Michael Johnson holds the Olympic record for the men's 400m race at 43 seconds. His

vlada-n [284]

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Step-by-step explanation:

We have to calculate his unit rate for both type of races

So,

Unit rate for 400m race:

Distance = 400m

Time = 43 sec

$Unit\ rate = U_1= \frac{Distance}{Time}\\=\frac{400}{43}\\=9.30\ meters\ per\ second$

Unit rate for 300m Race:

Distance = 300m

Time = 31 sec

$Unit\ Rate= U_2=\frac{300}{31}\\=9.68\ meters\ per\ second$

The difference between both unit rates is:

$U_2-U_1 = 9.68-9.30\\=0.38 => 0.4\ meters\ per\ sec$

Hence,

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Keywords: Unit rate, Speed

Learn more about unit rate at:

#LearnwithBrainly

7 0

2 years ago

Dilate by a scale factor of 1/2 AL D

Firdavs [7]

Answer:

The image triangle ΔD'L'W' after the dilation by a scale factor of 1/2 will have the vertices:

D' (0, 1)

L' (1/2, 5/2) or L'(0.5, 2.5)

W' (5/2, 2) or W'(2.5, 2)

`The figure of the dilated image is attached below.

Step-by-step explanation:

Given the triangle ΔDLW withe the vertices

D(0, 2)

L(1, 5)

W(5, 4)

As the scale factor 1/2 < 0, thus the image triangle will be smaller than the original triangle.

The rule of dilation is given by

Dilation: (x, y) → (1/2x, 1/2y), centered at (0, 0)

D(0, 2) → D' (1/2x, 1/2y) → D' (1/2(0), 1/2(2)) = D' (0, 1)

L(1, 5) → L'(1/2x, 1/2y) → L'(1/2(1), 1/2(5)) = L' (1/2, 5/2)

W(5, 4) → W'(1/2x, 1/2y) → W'(1/2(5), 1/2(4)) = W' (5/2, 2)

Therefore, the image triangle ΔD'L'W' after the dilation by a scale factor of 1/2 will have the vertices:

D' (0, 1)

L' (1/2, 5/2) or L'(0.5, 2.5)

W' (5/2, 2) or W'(2.5, 2)

`The figure of the dilated image is attached below.

7 0

2 years ago

The table shows the weights of onions at a grocery store.

zmey [24]

Answer:

Formula: 0.12x = y

Step-by-step explanation:

5 × 0.12 = 0.60

3 × 0.12 = 0.36

14 × 0.12 1.68

4 0

2 years ago

What is the answer to 3(m-1)=5m +3 - 2m

notsponge [240]

Is there a answer for m what is m

5 0

2 years ago

"explain how you know" and i will give brainliest:)

larisa [96]

Answer:

Step-by-step explanation:

first one is 9,14 the second one is 1,3 and the last one is 1, -3

5 0

2 years ago