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3 years ago

14

Daniela is putting away test tubes in Science Lab. She has 50 test tubes and 12 will fit on each rack. How many racks will Danie

la fill? Write your answer as a mixed number.

1 answer:

Valentin [98]3 years ago

6 0

Answer:

she will fit 4 1/6

Step-by-step explanation:

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ANSWER ALL (a-d) FOR 30 POINTS - EASY

djverab [1.8K]

Part a.

<span>The perimeter formula is: </span>P = 2w + 2L

Your answer for part A is P = 2w + 2L

Part b.

They tell us in part b, that:
w = 6L + 20

Substitute that into what we got for part a.

P = 2(6L + 20) + 2L
P = 12L + 40 + 2L
P = 14L + 40

Your answer for partb is P = 14L + 40

Part c.

So we take what we got from part b, and solve for L.

P = 14L + 40
14L = P - 40

$L = \boxed{\frac{P-40}{14}}$

That is your answer for part 3 ^

part d.

Plug in w = 32 into what we first got in part b.

w = 6L + 20
32 = 6L + 20
6L = 12

L = 2

Your answer for part d is L = 2

<span>:D</span>

8 0

3 years ago

Simplify: ³√81 - 8 ³√216 + 15 ⁴√16 + √225

sasho [114]

Answer:

<h2>1.326 ......</h2>

Step-by-step explanation:

³√81 = 4.326

³√216 = 6

⁴√16 = 2

√225 = 15

<h3> X = ³√81 - 8 ³√216 + 15 ⁴√16 + √225 </h3>

X = 4.326 - (8×6) + (15×2) + 15

X = 4.326 - 48 + 30 + 15

X = 49.326 - 48

X = 1.326 ............

6 0

2 years ago

Mr. Jones will cut 6 identical loaves of bread into pieces that are 1/4 loaf

r-ruslan [8.4K]

Answer B. 24
Each loaf of bread is divided into 4 slices
And there are 6 loaves of bread
6 x 4 =24
24 pieces

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3 years ago

PLEASE HELP!! I'LL GIVE BRAINLEST!!

guapka [62]

P = 2(12.9) + 2(19.3)
P = 25.8 + 38.6
P = 64.4

4 0

3 years ago

What is the equation of the quadratic graph with a focus of (2, 0) and a directrix of y = −12?

Alexxandr [17]

Distance from the point (x,y) to the focus = distance of (x,y) from the directrix
so we have

sqrt [(x - 2)^2 + y2] = 12 + y

squaring both sides
x^2 - 4x + 4 + y^2 = 144 + 24y + y^2

x^2 - 4x + 4 = 144 + 24y

24y = x^2 -4x - 140

y = x^2/24 - x/6 - 35/6 is the required equation

8 0

3 years ago