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3 years ago

Which statement is true about the equations -3x + 4y equals 12 1/4 x - 1/3 yd equals 1?

Mathematics

1 answer:

Marysya12 [62]3 years ago

3 0

Answer:

the answer is B

Step-by-step explanation:

im 100% correct

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Simplify there is a picture

kicyunya [14]

2 to the power of 20/3 to the power of 8. 2^20/3^8 for short.

5 0

3 years ago

A $50 item was marked up 20%. What is the total increased cost of the item?

GenaCL600 [577]

They increased it by $10.

It ended up costing $60.

Hope this helps.

4 0

3 years ago

Mike bought five items for lunch that Cost a total of 4.55 .Hit dogs cost .1.10 each and cookies cost 0.75 each. What equation c

-Dominant- [34]

Answer:

$c + h = 5$ and

$0.75c + 1.10h = 4.55$

Step-by-step explanation:

Assume that Mike bought only cookies and hot dogs.

The total can be represented as:

$Cookies + Hot\ Dogs = 5$ --- (1)

And the amount spent can be represented as:

$Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55$ --- (2)

Required

Determine the system of equation

Let c represents the number of cookies and h, number of hot dogs.

$Cookies + Hot\ Dogs = 5$ implies $c + h = 5$

And

$Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55$

Cost of cookies = 0.75 * c

Cost of hot dogs = 1.10 * h

So, we have:

$0.75c + 1.10h = 4.55$

Hence, the equations are:

$c + h = 5$ and

$0.75c + 1.10h = 4.55$

Solving for c and h

Make c the subject in $c + h = 5$

$c = 5 - h$

Substitute 5 - h for c in $0.75c + 1.10h = 4.55$

$0.75(5- h) + 1.10h = 4.55$

$3.75- 0.75h + 1.10h = 4.55$

$3.75 +0.35h = 4.55$

Collect Like Terms

$0.35h = 4.55 - 3.75$

$0.35h = 0.8$

Solve for h

$h = 0.8/0.35$

$h = 2.28571428571$

$h =2$ -- approximated

Recall that:

$c = 5 - h$

$c = 5 - 2$

$c =3$

5 0

3 years ago

In scientific notation

mrs_skeptik [129]

$(3.9 \times {10}^{ - 3}) + 0.0026 =$

$(39 \times {10}^{ - 4}) + (26 \times {10}^{ - 4}) =$

$39 \times {10}^{ - 4} + 26 \times {10}^{ - 4} =$

$Factoring \: {10}^{ - 4}$

${10}^{ - 4} \times (39 + 26) =$

$65 \times {10}^{ - 4} = 6.5 \times {10}^{ - 3}$

_________________________________

And we're done.

Thanks for watching buddy good luck.

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8 0

3 years ago

Albert wants to buy two pomegranates and some peaches

m_a_m_a [10]

1.19p+3.18≤10.00 can be used to determine the pounds of peaches Albert can buy.

Step-by-step explanation:

Given,

Cost of one pomegranate = $1.59

Cost of two pomegranate = 1.59*2 = $3.18

Cost of peaches per pound = $1.19

Cost of p pounds of peaches = 1.19p

Total amount of spent = $10.00

Cost of p pounds of peaches + Cost of two pomegranates ≤ Total to spend

$1.19p+3.18\leq 10.00$

1.19p+3.18≤10.00 can be used to determine the pounds of peaches Albert can buy.

Keywords: inequality, addition

Learn more about addition at:

#LearnwithBrainly

4 0

3 years ago

Which statement is true about the equations -3x + 4y equals 12 1/4 x - 1/3 yd equals 1?​

Which statement is true about the equations -3x + 4y equals 12 1/4 x - 1/3 yd equals 1?