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eduard
2 years ago
13

. Solve. 2/3 of 3/5 plese help

Mathematics
1 answer:
olasank [31]2 years ago
7 0

Answer:

10/9

Step-by-step explanation:

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The width of a rectangle is X centimetres. the length of the rectangle is (X+5) centimetres.
Oliga [24]

Answer:

12 cm

Step-by-step explanation:

width = x

length = x + 5

perimeter = 38cm

perimeter = length + width + length + width

x + 5 + x + x + 5 + x = 38

4x + 10 = 38

4x = 28

x = 7

length = x + 5 = 7 + 5 = 12

6 0
2 years ago
Read 2 more answers
Please help if you can):
blsea [12.9K]
No I don’t think I can lift it, nor anybody in the whole world
6 0
2 years ago
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Help please, I attached the question. Is it a!? <br> 
AVprozaik [17]

Answer:

A

Step-by-step explanation:

Recall that for a quadratic equation of the form:

0=ax^2+bx+c

The number of solutions it has can be determined using its discriminant:  

\Delta = b^2-4ac

Where:

  • If the discriminant is positive, we have two real solutions.
  • If the discriminant is negative, we have no real solutions.
  • And if the discriminant is zero, we have exactly one solution.

We have the equation:

2x^2+5x-k=0

Thus, <em>a</em> = 2, <em>b</em> = 5, and <em>c</em> = -<em>k</em>.

In order for the equation to have exactly one distinct solution, the discriminant must equal zero. Hence:

b^2-4ac=0

Substitute:

(5)^2-4(2)(-k)=0

Solve for <em>k</em>. Simplify:

25+8k=0

Solve:

\displaystyle k = -\frac{25}{8}

Thus, our answer is indeed A.

3 0
2 years ago
Read 2 more answers
F(x)=-4x^2+9 Find f(−3)
pochemuha

Answer:

f (-3) = 45

Step-by-step explanation:

f (x) =

4x {}^{2}  + 9

f (-3) =

(4 \times  - 3 \times  - 3) + 9

=》

36 + 9

=》

45

8 0
3 years ago
Find the value of x in the triangle shown below
wolverine [178]

Answer:

Step-by-step explanation:

3 0
2 years ago
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