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2 years ago

15

Which statement shows a correct next step equation? For 4(x-3)-5(x+1)=3

2 answers:

Brrunno [24]2 years ago

8 0

X=-20 because u solve for x by simplifying both sides of the equation

dmitriy555 [2]2 years ago

6 0

Let's solve your equation step-by-step.

4(x−3)−5(x+1)=3

Step 1: Simplify both sides of the equation.

4(x−3)−5(x+1)=3

(4)(x)+(4)(−3)+(−5)(x)+(−5)(1)=3(Distribute)

4x+−12+−5x+−5=3

(4x+−5x)+(−12+−5)=3(Combine Like Terms)

−x+−17=3

−x−17=3

Step 2: Add 17 to both sides.

−x−17+17=3+17

−x=20

Step 3: Divide both sides by -1.

−x−1=20−1

x=−20

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A teacher believes that the third homework assignment is a key predictor in how well students will do on the midterm. Let x repr

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Answer:

Hello your question has a disjointed equation attached to it and it is also incomplete attached below is the correct and complete question

A teacher believes that the third homework assignment is a key predictor in how well students will do on the midterm. Let x represent the third homework score and y the midterm exam score. A random sample of last terms students were selected and their grades are shown below

answer :

y-intercept = 25.9047

slope = 2.8420

Step-by-step explanation:

Determine the slope for the regression equation and y intercept

The regression equation ( gotten using excel ; attached below is the excel sample on how the equation was gotten )

y = 25.9047 + 2.8420x

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4 0

2 years ago

Indicate whether the lines are parallel, perpendicular, or neither. Justify your answer. X=4 and Y=-2

geniusboy [140]

Answer:

perpendicular

Step-by-step explanation:

x = 4 is a vertical line.

y = -2 is a horizontal line.

The lines are perpendicular.

6 0

3 years ago

A milkshake recipe calls for 1/3 cup of milk for each milkshake. If a server has 15/8 cups of milk, what is the maximum number o

Zepler [3.9K]

Answer:

5 milk shakes

Step-by-step explanation:

From the above question, we know that for the recipe

1/3 cup of milk = 1 milk shake

15/8 cup of milk = y milk shakes

We cross Multiply

15/8 cup × 1 = 1/3cup × y

y = 15/8 cup × 1 /1/3cup

= 15/8 ÷ 1/3

= 15/8 × 3

= 45/8

= 5.625 of 5 5/8 cups of milk

Therefore, the maximum number of

milkshakes the server can make following the recipe porpotians is 5 milk shakes.

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3 years ago

Hey guys<br>im new here<br>please solve this for me with steps!<br>ill mark as the best answer

Vinil7 [7]

Answer:

The factors of $2(x+y)^2-9(x+y)-5$ is ((x+y)-5)(2x+2y+1)

Step-by-step explanation:

Given polynomial

=> $2(x+y)^2-9(x+y)-5$

To Find:

The factors of the polynomial =?

Solution:

Lets assume k = (x+y)

Then $2(x+y)^2-9(x+y)-5$ can be written as $2k^2-9k-5$

Now by using quadratic formula

k = $\frac{-b\pm\sqrt{(b^2-4ac}}{2a}$

where

a= 2

b= -9

c= -5

Substituting the values, we get

k = $\frac{-b\pm\sqrt{(b^2-4ac)}}{2a}$

k = $\frac{-(-9) \pm \sqrt{((-9)^2-4(2)(-5)}}{2(2))}$

k = $\frac{-(-9) \pm \sqrt{(81+40)}}{4}$

k = $\frac{-(-9) \pm \sqrt{(121)}}{4}$

k = $\frac{-(-9) \pm 11}}{4}$

k= $\frac{ 9 \pm 11}{4}$

k = $\frac{20}{4}$ k = $\frac{-2}{4}$

$k_1 =5$ $k_2 = -\frac{1}{2}$

$2k^2-9k-5= 2(k-5)(k+\frac{1}{2})$

Solving the RHS we get

$\frac{2}{2}(k-5)(2k+1)$

$(k-5)(2k+1)$

Substituting k = x+y

$((x+y)-5)(2(x+y+1)$

$((x+y)-5)(2x+2y+1)$

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2 years ago

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kiruha [24]

Answer:

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Step-by-step explanation:

a positive divided by a negative is a negative

8 0

2 years ago