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irakobra [83]
3 years ago
6

Can anyone help? If x = 3, what does y equal? x = 3 y = ? 5x + 3y = 9

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

y = -2

Step-by-step explanation:

Plug in 3 for x and you get:

15 + 3y = 9

Solve for, Subtract 15 oon both sides:

3y = -6

Divide by 3 on both sides:

y = -2

victus00 [196]3 years ago
3 0

Answer:

y = -2

Step-by-step explanation:

Substituting x for 3 we get

5(3) + 3y = 9

Since both sides are divisible by three, we do that

5 + y + 3

Isolate y

y = -2

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How do you solve linear equations using substitution
GuDViN [60]
You substitute the y from the second eqaution to the y in the first equation
4 0
3 years ago
identify the coordinates of four points on the line with each given slope and y-intercept. slope=-1 and that y-intercept=8
VladimirAG [237]

Answer:

[-1, 9], [-2, 10], [-3, 11], [1, 7]

Step-by-step explanation:

Starting from the y-intercept of [0, 8], I did <em>rise</em><em>\</em><em>run</em><em> </em>by moving one block <em>north</em><em> </em>over <em>one</em> block <em>west</em><em> </em>for the first three coordinates, but retracing back to the y-intercept, I moved one block <em>south</em><em> </em>over <em>one</em> block <em>east</em> for the last coordinate. It does not matter where you go, as long as you follow the pattern within this <em>rate</em><em> </em><em>of</em><em> </em><em>change</em><em> </em>[<em>slope</em>].

I am joyous to assist you anytime.

5 0
3 years ago
Help me with this question <br> Please I need help
34kurt

Answer:

384 cm²

Step-by-step explanation:

The shape of the figure given in the question above is simply a combined shape of parallelogram and rectangle.

To obtain the area of the figure, we shall determine the area of the parallelogram and rectangle. This can be obtained as follow:

For parallelogram:

Height (H) = 7.5 cm

Base (B) = 24 cm

Area of parallelogram (A₁) =?

A₁ = B × H

A₁ = 24 × 7.5

A₁ = 180 cm²

For rectangle:

Length (L) = 24 cm

Width (W) = 8.5 cm

Area of rectangle (A₂) =?

A₂ = L × W

A₂ = 24 × 8.5

A₂ = 204 cm²

Finally, we shall determine the area of the shape.

Area of parallelogram (A₁) = 180 cm²

Area of rectangle (A₂) = 204 cm²

Area of figure (A)

A = A₁ + A₂

A = 180 + 204

A = 384 cm²

Therefore, the area of the figure is 384 cm²

3 0
3 years ago
the point-slope form of the question of the line that passes through (-4,-3) and (12,1) is y-1=1/4(x-12). what is the standard f
Alexeev081 [22]
Well first off you multiply the parenthesis 1/4(x-12) you get -1=1/4x-3 then you subtract the one so now the y can be by itself the you get Y=1/4x-2
5 0
3 years ago
Solve for x solve for x
alekssr [168]
All the angles added up = 360°

46 + 4x - 2 + 9x + 6 + 8x - 5 = 360
21x + 45 = 360
21x = 315
x = 15

Let me know if you have questions.
7 0
3 years ago
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