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Anestetic [448]
4 years ago
15

Pls help me help me pls ​

Mathematics
1 answer:
grin007 [14]4 years ago
4 0

Answer:

Point B

Step-by-step explanation:

Lines given:

  • y= 2/5x - 1/2
  • y= -1/3x +2/3

x coordinate of intersection of given lines is:

  • 2/5x - 1/2= -1/3x+2/3
  • 2/5x+1/3x= 2/3 +1/2
  • 6/15x+5/15x= 4/6+3/6
  • 11/15x=7/6
  • x= 7*15/11*6
  • x= 35/22

For this value of x, the value of y is:

  • y= 2/5*35/22 - 1/2
  • y=14/22- 1/2
  • y= 3/22

As per graph point (35/22, 3/22) is point B

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Solve for x<br> -5x+1=31
Ghella [55]

Answer:

x = -6

Step-by-step explanation:

-5x+1=31

- Subtract 1 from both sides of the equation.

-5x = 30

x = -6

8 0
3 years ago
Read 2 more answers
1. Amello has $25 to spend on maceuo this week. She loves lipstick och lostics . tube costs $4. What is the monimum number of lo
finlep [7]

Answer:

1. 4x ≤ 25

⇒ x ≤ 6.25

2. x + 4 < 25

⇒ x < 21

3. x + 4 ≥ 25

⇒ x ≥ 21

4. 4 + x ≤ 25

⇒ x ≤ 21

Step-by-step explanation:

1. 4x ≤ 25

⇒ x ≤ 6.25

2. x + 4 < 25

⇒ x < 21

3. x + 4 ≥ 25

⇒ x ≥ 21

4. 4 + x ≤ 25

⇒ x ≤ 21

4 0
3 years ago
297,060 + 0.0004839 =<br><br> Answer in Scientific Notation
EleoNora [17]

Answer:

2.970600004839 × 10^5

Step-by-step explanation:

First, we add up these 2 numbers.

297,060 + 0.0004839 = 297060.0004839

Then, we convert that into scientific notation.

297060.0004839 = 2.970600004839 × 10^5

Finally, we check if it's right.

10^5 = 100000

2.970600004839 * 100000 = 297060.0004839

Hope this helps.

4 0
3 years ago
Simplify:<br> a) a x b x a = <br> b) 4 x b x 2 x a =<br> c) 4a x 8b =<br> d) 15b ÷ 3a =
meriva
A)
a \times b \times a = \boxed{\bf{a^2 \times b}}

b)
4\times b\times 2\times a = \boxed{\bf{8ab}}

c)
4a \times 8b = \boxed{\bf{32ab}}

d)
15b\div 3a = \boxed{\bf{\frac{5b}{a}}}
7 0
3 years ago
How many quarts of water should be mixed with how many quarts of a 30% vinegar solution to obtain 12 qt of a 25% vinegar solutio
GaryK [48]

Given that total volume of the solution = 12 quarts

Let volume of water added = x quarts

Then volume of 30% vinegar = (12-x) quarts


Given that x quarts of 0% water is mixed with (12-x)quarts of 30% vinegar to obtain 12 quarts of 25% solution

So we can write equation as:

[0% of x] + [30% of (12-x)] = [25% of 12]

or 0x + 0.30(12-x) = 0.25*12

or 0 + 3.6-0.30x = 3

or -0.30x = 3-3.6

or -0.30x = -0.6

x=2


Hence answer will be 2 quarts of water.





8 0
4 years ago
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