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RoseWind [281]
3 years ago
13

PLEASE SOLVE FOR Y:

bsmiddle" class="latex-formula">
Mathematics
2 answers:
ehidna [41]3 years ago
6 0

Answer:

y = \frac{-1}{9}

Step-by-step explanation:

7y + 4 = 3 - 2y

add 2y  to both sides

7y + 4 + 2y = 3 -2y + 2y \\9y + 4 = 3

add -4 to both sides

9y + 4 -4 = 3 - 4 \\9y = -1

divide both sides by 9

\frac{9y}{9} = \frac{-1}{9} \\

y = \frac{-1}{9}

blsea [12.9K]3 years ago
6 0
7y +2y + 4 - 3
9y = -1 (divide)
y = -1/9
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Solve the simultaneous equations<br> 2x - 5y = 9<br> 3x + 4y = 2
Dafna1 [17]

Answer:

(2, - 1 )

Step-by-step explanation:

Given the 2 equations

2x - 5y = 9 → (1)

3x + 4y = 2 → (2)

Multiplying (1) by 4 and (2) by 5 and adding the result will eliminate the y- term

8x - 20y = 36 → (3)

15x + 20y = 10 → (4)

Add (3) and (4) term by term to eliminate y

23x + 0 = 46

23x = 46 ( divide both sides by 23 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (2)

3(2) + 4y = 2

6 + 4y = 2 ( subtract 6 from both sides )

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solution is (2, - 1 )

7 0
3 years ago
Kevin needs I knew aquarium for his fish. The pet store has a fish tank in the shape of a rectangular prism that measures 25' lo
DIA [1.3K]

Answer:

  yes

Step-by-step explanation:

The volume of the rectangular prism is the product of its dimensions:

  (25 ft)(25 ft)(14 ft) = 8750 ft³

The tank is larger than the required 7500 ft³, so it is big enough.

3 0
3 years ago
Find each rate and unit rate for Alpha can bike 125 yards every 25 minutes.
cricket20 [7]
That would have a ratio of 75 to 12 1/2 and the unit rate is 5 yards per minute
5 0
3 years ago
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Wanda rode her bike 21/10 miles. Write a mixed number that shows how far Wanda rode her bike.
bija089 [108]
\frac{21}{10} = 21÷10

<em>2</em> x 10 = 20

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22\frac{1}{10}
3 0
4 years ago
Solve each system of inequalities by graphing.
Nutka1998 [239]

Answer:

1.Given : Inequalities  and

To find : Solve the system of inequalities by graphing ?

Solution :

Let the equation 1 -

Equation 2 -

Plot these equation in the graphing tool,

Equation 1  is shown by red dotted line.

Equation 2  is shown by blue dotted line.

The intersection point of the equations is the solution of the system i.e. (0,-1).

Refer the attached figure below.

The solution of inequalities is at (0,-1).

2. Y=5-2x/3

Step-by-step explanation:

8 0
3 years ago
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