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andreyandreev [35.5K]

3 years ago

12

A science teacher taught classes of 29, 27, and 24 students. In these classes, a total of 32 students said they eat 7 servings o

f whole grains every day. What percentage of students ate 7 servings of whole grains daily?
PLS HELP!! I HAVE A TIME LIMIT

1 answer:

Alona [7]3 years ago

7 0

Answer:

= 40%

Step-by-step explanation:

29+27+24=80

total = 80

32/80=0.4=40%

=40%

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If the length of a rectangle is 2x + 4 and the width is x - 2. write

Bess [88]

Answer:

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Step-by-step explanation:

Use the given values in the formula for the perimeter of a rectangle:

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So, the perimeter is ...

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2 years ago

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Ex) A nursery plants a new tree and attaches a guy wire to help support the tree

o-na [289]

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3 years ago

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I need help on this loll

Serhud [2]

Answer: The translation rule that maps point D ( 7 , − 3 ) onto point D ' ( 2 , 5 )

is (x , y) → (x - 5 , y + 8)

Step-by-step explanation:

Let us revise the translation

If the point (x , y) translated horizontally to the right by h units then its image is (x + h , y)

If the point (x , y) translated horizontally to the left by h units then its image is (x - h , y)

If the point (x , y) translated vertically up by k units then its image is (x , y + k)

If the point (x , y) translated vertically down by k units then its image is (x , y - k)

(x , y) → (x ± h , y ± k) the right arrow symbol used to show the

translation from a point to its image

Example:

∵ P (0 , 0) → P' (1 , 2)

∴ The rule is (x , y) → (x + 1 , y + 2)

Let us find the translation rule that maps point D ( 7 , − 3 ) onto

point D' (2 , 5)

∵ Point (x , y) = (7 , -3)

∵ Its image after translation (x + h , y + k) = (2 , 5)

∴ x + h = 2

∵ x = 7

∴ 7 + h = 2

- Subtract 7 from both sides

∴ h = -5

∵ y + k = 5

∵ y = -3

∴ -3 + k = 5

- Add 3 to both sides

∴ k = 8

∴ The rule of translation is (x , y) → (x - 5 , y + 8)

The translation rule that maps point D ( 7 , − 3 ) onto point D ' ( 2 , 5 )

is (x , y) → (x - 5 , y + 8)

3 0

3 years ago

Can someone please help me!

vladimir1956 [14]

Hello!

To find the circumference of a circle you do $2 \pi r$ where r is the radius of the circle

So we do 2 $\pi 72$

Then we substitute pi for 3.14

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Then we multiply this by 5 since he runs 5 laps

Which gives us the answer of 2260.8 yds

Hope this helps!

6 0

3 years ago