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galina1969 [7]
2 years ago
7

Are the equations -3(2x+9)=12 and 2x+9=-4 equivalent?​

Mathematics
2 answers:
stealth61 [152]2 years ago
6 0
Yes those two equations are equivalent
erma4kov [3.2K]2 years ago
4 0
Yes they are
Explanation: -3(2x+9)=12 when u divide -3 by 12 the equation turns into (2x+9)=-4 so they have to be equivalent
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Ruby Company produces a chair for which the standard specifies 5 yards of material per unit. The standard price of one yard of m
azamat

Answer

given,

Standard price = $ 7.50

8,500 chairs were manufactured, using 43,600 yards at a cost of $7.55 per yard.

Price Variance = Actual Quantity x (Actual Rate - Standard Rate)

                         = 43,600 x (7.55 - 7.50)

                         = 2180 (U)

Quantity Variance = Standard Rate x (Actual Quantity - Standard Quantity)

                              = 7.5 x (43600 - 8500 x 5)

                              = 8250 (U)

Cost Variance = 2180+ 8250 = 10430 (U)

3 0
4 years ago
(Does anyone understand this???)
professor190 [17]

Answer:

y=-4x-8

Step-by-step explanation:

use points (0,-8) and (-2,0) and plug into slope formula.

slope formula=(y2-y1)/(x2-x1)

(0-(-8))/(-2-0)=-4

you get y=4x+b

use point (-2,0) to find b

you get y=-4x-8

8 0
3 years ago
Does it matter which way you subtract the values when finding distance explain?
dusya [7]
No it really does not matter.

6 0
3 years ago
Find x and y. Remember that a + bi = c + di exactly when a = c and b = d. 8 = (4+8i)(x+yi)
irakobra [83]
<span>x+yi = <span>8/(<span>4+8i)</span></span></span><span>x+yi = <span>2/(<span>1+2i)</span></span></span><span>x+yi = <span>2/(<span>1+2i) </span></span>× (<span><span>1−2i)/(</span><span>1−2i)</span></span></span><span>x+yi = (<span><span>2−4i) /</span>5</span></span><span><span>x+yi = <span>2/5</span>−<span>4/5</span>i

x= 2/5
y= -4/5i

</span></span>
3 0
4 years ago
Can anyone help me with this question​
Lina20 [59]

Answer:

78

idont know

5 0
3 years ago
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