3 years ago

1) 4x-7y=3 x-7y=-15 2) 9x+8y=15 9x+8y=30

Mathematics

1 answer:

spin [16.1K]3 years ago

4 0

1) x=6, y=3
2) no solution

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I’m about to smash my laptop with a brick please please help

RSB [31]

Answer: y = 800

Step-by-step explanation:

3(y+200) = 3000

y+200 = 1000 (dividing 3 from both sides)

y = 800

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2 years ago

Jack is mowing a lawn that has a shed. needs to know area of lawn to mow. dimensions of yard are 5x by 13 x-4 . she'd are 2x by

Elena-2011 [213]

The diagram of the lawn and the shed is shown below.

The area of the lawn needed to be mowed equals to the area of the yard minus the area of the shed

The area of the yard = $(5x)(13x-4) = 65 x^{2} -20x$
The area of the shed = $(2x)(2x+4)=4 x^{2} +8x$

The area of the lawn = $65 x^{2} -20x-(4 x^{2} +8x)$
The area of the lawn = $65 x^{2} -20x-4 x^{2} -8x$
The area of the lawn = $61 x^{2} -28x$

5 0

2 years ago

The system of equations is coincident. What are the missing values?

FrozenT [24]

$\rm x+3y=5|*4 \\ \\ 4*x+4*3y=4*5 \\ \\ \boxed{\rm 4x+12y=20}$

7 0

3 years ago

So yeah. . .. idk how to do this

kipiarov [429]

<em>Please </em>use for reference. Merci.

To find rate of change simply divide y/x.

hour 2: 56/2=28

hour 4: 125/4~about 31.3 or 31

hour 5: 164/5=32.8 or ~ 33

hour 8: 271/8 ~ about 34 or 33.875

hour 13: 404/13 ~ about 31 or 31.0769231

What numbers are the largest?

hours 5 and 8

Thus, the correct answer was option C.

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3 years ago

A rectangle with the length of 1/5 yard and the width of 2/3 yards

suter [353]

Answer:

Yeah she is right but its kinda hard to know wahat u want

Step-by-step explanation:

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2 years ago