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IgorC [24]
3 years ago
5

Solve for d -6 - d = 6 - 4d

Mathematics
1 answer:
snow_tiger [21]3 years ago
7 0

Answer:

d = 4

Step-by-step explanation:

- 6 - d = 6 - 4d ( add 4d to both sides )

- 6 + 3d = 6 ( add 6 to both sides )

3d = 12 ( divide both sides by 3 )

d = 4

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In right △ABC with right angle B, m∠A=(3x−8)° and m∠C=(x−2)°.
julsineya [31]

Answer:

<A = 67

Step-by-step explanation:

The three angles of a triangle add up to 180 degrees.  We know a right angle is 90 degrees.

<A + <B + <C = 180

3x-8 + 90 + x-2 =180

Combine like terms

4x-10+90 = 180

4x+80 =180

Subtract 80 from each side

4x+80-80=180-80

4x=100

Divide each side by 4

4x/4 = 100/4

x=25

But we want to know <A

<A = 3x-8

 Substitute x=25

    =3(25) -8

    =75-8

   = 67


6 0
3 years ago
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alvin ran a 5-kilometer race.when he was halfway to the finish line, how many meters did he have left to run?
MrRissso [65]

Answer:

2.5km

step-by-step explanation:

half of 5

4 0
3 years ago
8x+2y=-2<br> y=-5x+1<br> Solve for x and y
sp2606 [1]
X = 2
y = -9
16 - negative 18 = -2

5 0
3 years ago
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A person bought some cosmetics from wholesale market at the rate of Rs 360 per dozen he sells it at Rs 80 a pair find the gain p
marusya05 [52]

Answer:

33.33%

Step-by-step explanation:

We need to calculate the <u>unit selling price and cost of each cosmetics.</u>

If a person bought some cosmetics from wholesale market at the rate of Rs 360 per dozen., then for 1 cosmetics, we will say;

x = 1 cosmetic

since 360 = 12 cosmetic

cross multiply

12x = 360

x = 360/12

x = 30

Hence the unit cost price of the cosmetics will be Rs. 30

Similarly, if he sells it at Rs 80 a pair, then he sold one cosmetic at 80/2 = Rs. 40 (a pair is 2 cosmetics)

Selling price per unit = Rs. 40

Cost price per unit = Rs. 30

percent gain = SP-CP/CP * 100%

percent gain = 40-30/30 * 100

percent gain = 10/30 * 100

percent gain = 100/3

percent gain = 33.33%

Hence the percentage gain is 33.33%

5 0
3 years ago
0.75,1/2,0.4, and 1/5 from least to greatest
avanturin [10]
0.4, 0.75, 1/2, 1/5
6 0
3 years ago
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