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3 years ago

Sarah buys a shirt on sale at

Mathematics

2 answers:

bija089 [108]3 years ago

5 0

Answer:

$20.58

Step-by-step explanation:

daser333 [38]3 years ago

4 0

Answer:

Step-by-step explanation:

divide 28 from 30. 2 can go into 3 ones its 2 so subtract its one bring down 8 then the answer is 20

28 _______

- 2

____

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At one farmer’s market, bananas cost $0.80 per pound. At another farmer’s market, bananas are sold in 5-pound bags for $4.50 per

kow [346]

Answer:

if your looking for which is more cost effective it is the 0.80 per pound as 5 pounds of it would add up to $4.00

7 0

3 years ago

Find the product.<br> 5x2.2y2

ArbitrLikvidat [17]

5x2 - 2y2 Answer:

Step-by-step explanation:

3.1 Factoring: 5x2-2y2

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 5 is not a square !!

Ruling : Binomial can not be factored as the

difference of two perfect squares

8 0

4 years ago

Read 2 more answers

Survey results tell you that 55% of students say chocolate is their favoriate ice cream flavor. If 88 students said chocolate is

jekas [21]

Answer:

around 165-176

is it a multiple choice answer

Step-by-step explanation:

4 0

3 years ago

Michela’s skateboard ramp is at an incline of 40°. When she attempts a trick on the ramp, she finds that it is too steep. She ad

marissa [1.9K]

Answer:

22.7604763 degrees

Step-by-step explanation:

Note that the answer is NOT 20 degrees.

She adjusted the ramp to half the original <em>incline</em>

Therefore we have tan 40 = x = 0.839099631.

We want an incline of y degrees where tan y = x/2 = 0.839099631/2 = 0.419549815

Taking the arctan of both sides, we get

y = arctan(0.419549815) = 22.7604763 degrees

8 0

3 years ago

suppose the population of a town is growing exponentially. the population was 4,636 in 2008 and grew to 5,508 in 2018. what is t

Sloan [31]

Step-by-step explanation:

The standard equation used to model a exponential growth is given by $f(t)=Ae^{Bt}$

Given two data points, which are both explicitly a function of time, it is easy to solve the two equations,

$4636=Ae^{2008B} ,5508=Ae^{2018B}$

Dividing the second equation by the first,

$\frac{5508}{4636}=\frac{Ae^{2018B} }{Ae^{2008B} }$

$e^{10B}=\frac{5508}{4636}$

$10B=ln(\frac{5508}{4636} )=0.17235$

$B=0.017235$

Substituting in first equation, $A=4.32645\textrm{x}10^{-12}$

Growth model : $f(t)=(4.3265\textrm{x}10^{-12} )e^{0.017235t}$

Growth rate= $ABe^{Bt}$ = $94.93$

∴Approximate growth rate as of 2018 = 95

5 0

3 years ago