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3 years ago

How do you solve this system , y=1/2x-4 and y=-2x+1 by graphing

Mathematics

1 answer:

mart [117]3 years ago

7 0

Answer:

x=2

y=-3

Step-by-step explanation:

we have

$y=\frac{1}{2}x-4$ ----> equation A

$y=-2x+1$ ----> equation B

Solve the system by graphing

Remember that the solution of the system of equations by graphing is the intersection point both lines.

using a graphing tool

The intersection point is (2,-3)

therefore

The solution is

x=2

y=-3

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Help me pls, BRAINEST AWARD

Natali [406]

Answer:

x = 3.7

Step-by-step explanation:

By applying sine ratio for the given angle B,

sin(39°) = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

sin(39°) = $\frac{AD}{AB}$

0.6293 = $\frac{AD}{7}$

AD = 4.41

By applying tangent ratio for the given angle C,

tan(50°) = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

1.19 = $\frac{AD}{x}$

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3 years ago

10% of ________ is 7<br> 25% of ________ is 6

GrogVix [38]

Answer:

I got

10% of 70 is 7

5 0

3 years ago

Read 2 more answers

If θ is an acute angle and sin θ = 2 1 , then cos θ =

ss7ja [257]

First of all i think theres a mistakein the question;
i think it is sin θ = $\frac{1}{2}$

and then sin 30° = $\frac{1}{2}$

thus θ= 30° $\frac{ \sqrt{3} }{2}$

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4 years ago

Jane run 7 miles in 60 minutes. At the same rate, how many miles will she run in 24 minutes

statuscvo [17]

Answer:

Denote the amount of miles she will run in 24 minutes: x

=> x/24 = 7/60 (same rate)

=> x = 7x24/60 = 2.8 (miles)

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3 years ago

Y = –x + 4

aliina [53]

Y = -x + 4.....so sub in -x + 4 in for y in the other equation

x + 2y = -8
x + 2(-x + 4) = -8
x - 2x + 8 = -8
x - 2x = -8 - 8
-x = -16
x = 16

y = -x + 4
y = -16 + 4
y = - 12

one solution (16,-12)

8 0

3 years ago

Read 2 more answers