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ryzh [129]
3 years ago
10

|2x−3y| if x=0.5; y=−0.7 help me out please

Mathematics
2 answers:
Inessa05 [86]3 years ago
7 0
The answer is 3.1
(2*0.5)-(3*-0.7)
1-(-2.1)
1+2.1
3.1
oee [108]3 years ago
5 0

The given expression is

| 2x-3y | , x=0.5, y=-0.7

Substituting the given values of x and y, we will get

| 2(0.5)-3(-0.7) | = | 1+ 2.1 | = |3.1 |

And absolute value of both positive and negative number is a positive number .

Therefore the final answer is

| 3.1 | = 3.1

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What is the solution to -(4x-3) = -7(9+x) ???
Likurg_2 [28]

Answer:

The solution is -22

Step-by-step explanation:

<em>The solution of an equation is the value of the variable of the equation</em>

∵ -(4x - 3) = -7(9 + x)

→ Simplify each side

∵ -(4x) - -(3) = -7(9) + -7(x)

∴ (-4x) - (-3) = -63 + (-7x)

→ Remember (-)(-) = (+) and (-)(+) = (-)

∴ -4x + 3 = -63 - 7x

→ Add 7x to both sides

∴ -4x + 7x + 3 = -63 - 7x + 7x

∴ 3x + 3 = -63

→ Subtract 3 from both sides

∵ 3x + 3 - 3 = -63 - 3

∴ 3x = -66

→ Divide both sides by 3

∴ x = -22

∴ The solution is -22

8 0
3 years ago
Which one the answer?
kifflom [539]
D. Hope this helps ;)
5 0
3 years ago
Can someone check this one for me , thank you!
Rudik [331]

Answer:

C

Step-by-step explanation:

Using sum/difference to product identity

• sin x - sin y = 2 cos(\frac{x+y}{2}) sin (\frac{x-y}{2})

with x = 4Θ and y = 2Θ

Then

sin(4Θ) - sin(2Θ)

= 2 cos(\frac{4o+2o}{2}) sin(\frac{4o-2o}{2})

= 2cos(3Θ)sinΘ → C

8 0
3 years ago
The graph of a piecewise defined function is given. evaluate f(-2), f(0), f(1)
vfiekz [6]

Answer:

D

Step-by-step explanation:

because when x = -2 on the graph the y is -2 (-2,-2)

when the x values is 0 the y value is 1 (0,1)

and when x is 1 the y value is 2. (1,2)

hope this helps. have a good day

5 0
3 years ago
What is the slope of the line that passes through the points (10, 5)<br> and (9, 5) ?
V125BC [204]

Answer:

0

Step-by-step explanation:

Y2-y1/x2-x1

5-5/9-10 =0/-1. Slope is 0

4 0
3 years ago
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