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zalisa [80]
3 years ago
11

Back to school is coming and laura is

Mathematics
1 answer:
sattari [20]3 years ago
7 0
Huh? Are you missing the something
You might be interested in
Please help with a answer key
faust18 [17]

Answer:

c

Step-by-step explanation:

c

8 0
3 years ago
What is the width of the rectangle?<br> 30y<br><br> 60y4
Bas_tet [7]

Answer:

2 y^3

Step-by-step explanation:

Area of rectangule is length * width

7 0
2 years ago
The ratio of the length to the width of a picture is 5:2. The picture is enlarged so that its length is 15 inches now. What is t
Maru [420]
The answer is B.
The ratio is multiplied by three so 5 times 3 is 15 and 2 times 3 is 6.
8 0
3 years ago
What are the ordered pairs of the
9966 [12]

Start by writing the system down, I will use y to represent f(x)

y=x^2-5x+3\wedge y=-3

Substitute the fact that y=-3 into the first equation to get,

-3=x^2-5x+3

Simplify into a quadratic form (ax^2+bx+c=0),

x^2-5x+6=0

Now you can use Vieta's rule which states that any quadratic equation can be written in the following form,

x^2+x(m+n)+mn=0

which then must factor into

(x+m)(x+n)=0

And the solutions will be m,n.

Clearly for small coefficients like ours 5,6, this is very easy to figure out. To get 5 and 6 we simply say that m=3, n=2.

This fits the definition as 5=3+2 and 6=2\cdot3.

So as mentioned, solutions will equal to m=3, n=2 but these are just x-values in the solution pairs of a form (x,y).

To get y-values we must substitute 3 for x in the original equation and then also 2 for x in the original equation. Luckily we already know that substituting either of the two numbers yields a zero.

So the solution pairs are (2,0) and (3,0).

Hope this helps :)

5 0
2 years ago
2.5kg cost £1.40<br> what is the cost of 4.25kg
madreJ [45]

Answer:

it is 5.7

Step-by-step explanation:

4.25 × 1.40

5.95 - 0.25

5.7 or 5.70

8 0
3 years ago
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