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Verdich [7]
3 years ago
7

What is 2x+7y=3 x=-4y​

Mathematics
2 answers:
zimovet [89]3 years ago
8 0
2(-4y) +7y =3
-8y + 7y =3
-y=3
therefore y= -3
irina [24]3 years ago
3 0

2x+7y=3

2(-4y)+7y=3

-8y+7y=3

-y=3

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To increase an amount by 5% what single multiplayer would u use? PLZ HELP!!
bezimeni [28]
You can use times the value by 1.05 to find the answer directly
5 0
3 years ago
Hi please can you help me this is a new topic and I’m very confused
olchik [2.2K]

Answer: the large jar is cheaper

Step-by-step explanation:

If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :

1.54/440 = 0.0035

1.26/340 = 0.0037

So, by comparing both prices/gram, you've found that the large jar is cheaper.

8 0
3 years ago
Use the function to solve the question. What is f(-3) ?
ohaa [14]

Answer:

-3 f

ithink

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which of the g-values satisfy the following inequality? 7≥12−g
sergejj [24]

Answer:

g=6

Step-by-step explanation:

g=4 and g=5 will be more than 7 but g=6 is less.

4 0
3 years ago
1. What is the value of x? Show your work to justify your answer.
Reil [10]

Answer:

x=72 and the exterior angle is 154

Step-by-step explanation:

We will call the unknown angle in the triangle y.  Angle y and the angle (2x +10) form a straight line so they make 180 degrees.

y + 2x+10 =180

Solve for y by subtracting 2x+10 from each side.

y + 2x+10 - (2x+10) =180 - (2x+10)

y = 180-2x-10

y = 170-2x


The three angles of a triangle add to 180 degrees

x+ y+ 82 = 180

x+ (170-2x)+82 = 180

Combine like terms

-x +252=180

Subtract 252 from each side

-x+252-252 = 180-252

-x = -72

Multiply each side by -1

-1*-x = -72*-1

x=72

The exterior angle is 2x+10.  Substitute x=72 into the equation.

2(72)+10

144+10

154


8 0
3 years ago
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