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3 years ago

7

Plz help i don't understand

2 answers:

Sedaia [141]3 years ago

8 0

20 to 5, 20:5, 20/5 that is the answer

Orlov [11]3 years ago

5 0

5to20 ad use that to complete this question

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Elimination Method 7x=3y+45 4x+5y=19 (Show it step by step please!)

Fittoniya [83]

$\left\{\begin{array}{ccc}7x=3y+45&|\text{subtract 3y from both sides}\\4x+5y=19\end{array}\right\\\left\{\begin{array}{ccc}7x-3y=45&|\text{multiply both sides by 5}\\4x+5y=19&|\text{multiply both sides by 3}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}35x-15y=225\\12x+15y=57\end{array}\right}\qquad|\text{add both sides of the equations}\\.\qquad47x=282\qquad\text{divide both sides by 47}\\.\qquad \boxed{x=6}\\\\\text{Put the value of x to the second equation}$

$4(6)+5y=19\\\\24+5y=19\qquad\text{subtract 24 from both sides}\\\\5y=-5\qquad\text{divide both sides by 5}\\\\\boxed{y=-1}\\\\Answer:\ \boxed{x=6\ and\ y=-1}$

8 0

3 years ago

What is the greatsest common factor of<br><img src="https://tex.z-dn.net/?f=24%20%7Ba%7D%5E%7B3%7D%20c" id="TexFormula1" title="

coldgirl [10]

Think it is just 3a

3a x 6 =24a

4 0

3 years ago

Write the fraction in simplest form.

Pachacha [2.7K]

I got this online
I hope its good

6 0

3 years ago

Using an appropriately designed and analyzed study, a researcher observes a p-value of 0.010000. Consider the following proposit

mafiozo [28]

Answer: a.

a. PROPOSITION ONE is true and PROPOSITION TWO is true

b. PROPOSITION ONE is true and PROPOSITION TWO is false

c. PROPOSITION ONE is false and PROPOSITION TWO is true

d. PROPOSITION ONE is false and PROPOSITION TWO is false

e. None of the above

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2 years ago

Before starting their graduate studies, a student wants to rent an apartment near the university. She wants to learn how the dis

madreJ [45]

Answer:

The resulting residual value is e=-40.24.

Step-by-step explanation:

The residual value e for a regression model is defined as the difference between the real value y and the predicted value yp:

$e=y-y_p$

The predicted value for DISTANCE=0.43 miles is:

$RENT = 1200.4326 - 256.2567\cdot DISTANCE\\\\RENT(0.43) = 1200.4326 - 256.2567\cdot 0.43\\\\RENT(0.43) = 1200.4326 - 110.1904=1090.2422\\\\$

Then, if the real value is $1,050, the residual value is calculated as:

$e=y-y_p\\\\e=1050-1090.2422=-40.2422$

5 0

3 years ago