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devlian [24]
3 years ago
12

3x + 2y = 30 5x - 2y = 2 X= Y=

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0

Answer:

x=4 y=9

Step-by-step explanation:

add the equations

8x=32

x=4

20-2y=2

2y=18

y=9

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Andrew bought a new car for $32,000. The dealer gave him $10,000 for his trade-in. Sales tax is 5% but is only charged on the di
xz_007 [3.2K]

Answer:Andrew will pay $1100 in sales tax

Step-by-step explanation:

Andrew bought a new car for $32,000. The dealer gave him $10,000 for his trade-in. Sales tax is 5% but is only charged on the difference between the cost of the new car and the value of the trade-in. The value of the difference between the cost of the new car and the value of the trade-in would be

32000 - 10000 = $22000

Therefore, the amount that Andrew will pay in sales tax would be

5/100 × 22000 = 0.05 × 22000 = $1100

5 0
4 years ago
If the cube above has a surface area of 54cm^3, what is the volume of the cube?
Colt1911 [192]

9514 1404 393

Answer:

  27 cm³

Step-by-step explanation:

The surface area of a cube is ...

  SA = 6s²

Then the edge length is ...

  54 cm² = 6s² . . . . . please note that cm³ is not the appropriate unit for area

  9 cm² = s² . . . . . .divide by 6

  3 cm = s . . . . . . . take the square root

The volume of a cube is ...

  V = s³

  V = (3 cm)³ = 27 cm³

The volume of the cube is 27 cm³.

3 0
3 years ago
The sum of 2 numbers is 150.One number is 12 more than the other number.What is the smaller number?​
anygoal [31]
The smaller number is 63 I think.

I think this because 150/2 is 75

75-12=63

the small number would be 63

the larger number just in case u need it btw is 87 I think


hope this helps
7 0
3 years ago
Read 2 more answers
Use Figure 1 to answer questions 1-4
kolezko [41]

Answer:

95 degrees

Step-by-step explanation:

since angles 1 and 4 are vertical angles, they are congruent

3x+10=4x-15

3x-4x=-15-10

-x=-25

x=25

x=25 degrees

angles 4 and 7 are supplementary due to them being alternate exterior angles

lets find the measure of angle 4:

4x-15

4*25-15

100-15

85 degrees

Now, lets find the angle measure of angle 7:

85+x=180

x=180-85

x=95

So, the angle measure of angle 7 is 95 degrees

5 0
4 years ago
Please I need help in this...it's for maths please​
dangina [55]

Answer:

  1. 1.6962 to 2.d.p = 1.70
  2. 0.007395 = 0.007 to 3d.p
  3. 0.4247 = 0.425 to 3.d.p
  4. 0.007395 = 0.0074 to 4.d.p

                <u>Significant Figures</u>

  1. 32549 =  32500  to 3.s.f
  2. 909520 = 910000  to 3.s.f
  3. 32549 = 32550 to 4.s.f
  4. 909520 = 909500 to 4.s.f

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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