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worty [1.4K]
2 years ago
15

3. There are 9 tables in the cafeteria. Each table has the same number of chairs. If there is a tota of 171 chairs, how many cha

irs are at each table a. 16 b. 17 C. 18 d. 19 ​
Mathematics
2 answers:
dimaraw [331]2 years ago
8 0
The answer is 19 because it is what it is
goldenfox [79]2 years ago
6 0

Answer:

d. 19

Step-by-step explanation:

n.o of tables = 9

total n.o of chairs = 171

if there is equal n.o chairs in each table then,

171/9

=19

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What is the quotation of 7^-1/7^2
Temka [501]

Answer:

  • 7^-3

Step-by-step explanation:

<u>Solving in steps</u>

  • 7^-1/7^2 =
  • 7^-1 × 7^-2 =
  • 7^(-1 - 2) =
  • 7^-3
3 0
3 years ago
The circumference of a circle is 23π m. What is the area, in square meters? Express your answer in terms of \piπ
LenaWriter [7]

Answer:

Area of the circle =   \frac{529}{4}  π  m²    or      132.25 π  m²

Step-by-step explanation:

To find the area, we will follow the steps below.

First write down the formular for the circumference of a circle, then use the formula to find the radius of the circle after which you can now find the area of the circle.

That is;

C = 2πr

where c is the circumference of the circle and   r is the radius of the circle

From the question given, circumference C = 23π

23π = 2π r

Divide both-side of the equation by 2π

23π/2π  =  2πr/2π

23/2   =  r

radius =   \frac{23}{2}  m

Formula for calculating the area of a circle is given by;

A = πr²

where A= area of the circle   and   r is the radius of the circle

A = π ( \frac{23}{2} )²

A = \frac{529}{4}  π  m²    or      132.25 π  m²

Area of the circle =   \frac{529}{4}  π  m²    or      132.25 π  m²

6 0
3 years ago
Find the equivalent fractionsss with large denominatorsss
Stella [2.4K]

Answer:

12

Step-by-step explanation:

\frac{3}{8}  =  \frac{?}{32}

8*4=32

3*4=12

6 0
1 year ago
A yeast culture weighing 2 grams is removed from a refrigerator unit and is expected to grow at the rate of Upper W prime (t )eq
Naily [24]

Answer:

a) during the first 10 hours of growth the weight will increase 271.8% relative to the initial state ( or 2.718 g)

b) during the first 20 hours of growth the weight will increase  467.1 % relative to the initial state ( or 4.671 g)

Step-by-step explanation:

since the growing rate law is

W'(t) = 0.1 gr/hour * e^(0.1gr/hour* t)  , W'(t) [gr/hour]

and following mathematical conventions: W'(t)= dW/dt

then

dW/dt=0.1 e^(0.1t)

∫dW =∫0.1 e^(0.1t) dt

W = e^(0.1t) + C

at the beginning, (time t=0) the weight is W=2 grams .Therefore

2 g = e^(0.1 g/h*0) + C  → 2 g = 1 g + C → C = 1 g

then

W = e^(0.1t) + 1 g

at t= 10 hours

W = e^(0.1 g/h*10h) + 1 g = 3.718 g/h

therefore the weight will increase

ΔW = 3.718 g -  1 g = 2.718 g  or 271.8% relative to the initial state

for t=20 hours

W = e^(0.1 g/h*20h) + 1 g = 8.389 g/h

thus, the from t= 10 hours to t= 20 hours the weight will increase

ΔW =  8.389 g/h -  3.718 g = 4.671 g  or 467.1 %relative to the initial state

5 0
3 years ago
In the figure below,two lines are parallel and m &lt; 1 =83°. Find all other angles
mars1129 [50]

Answer:

angle 3=83(vertically opposite angles are equal)

angle 5=angle 3(alternate interior angles) so = 83

angle 7 =angle 5 ( vertically opposite angles)

angle 2 +angle 1=180 (linear pair ) so angle 1 + 180-83=97

angle 4 = angle 2 (VOA)=97

angle 6 =angle 4 (AIA)=97

angle 8 =angle 6(VOA)=97

hope it helped plz mark me as brailiest

Step-by-step explanation:

3 0
3 years ago
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