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2 years ago

Please answer this quick it is due in 20 min!

Mathematics

1 answer:

PtichkaEL [24]2 years ago

3 0

Answer:

1) 224 ounces

2) 1,820 g

3) 0.205 km

4) 5 weeks

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I need to know this asap

miskamm [114]

Answer:

1, -4.5

Step-by-step explanation:

What do you mean by estimating the solution?

y=-6x+4

x-4(-6x+4)=19

x+24x-16=19

25x=25

x=1

1-4y=19

-4y=18

y=-4.5

7 0

3 years ago

What are the solutions of x^2-2x+5=0

sweet [91]

The solution of $x^{2}-2 x+5=0$ are 1 + 2i and 1 – 2i

Solution:

Given, equation is $x^{2}-2 x+5=0$

We have to find the roots of the given quadratic equation

Now, let us use the quadratic formula

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ --- (1)

Let us determine the nature of roots:

Here in $x^{2}-2 x+5=0$ a = 1 ; b = -2 ; c = 5

$b^2 - 4ac = 2^2 - 4(1)(5) = 4 - 20 = -16$

Since $b^2 - 4ac < 0$ , the roots obtained will be complex conjugates.

Now plug in values in eqn 1, we get,

$x=\frac{-(-2) \pm \sqrt{(-2)^{2}-4 \times 1 \times 5}}{2 \times 1}$

On solving we get,

$x=\frac{2 \pm \sqrt{4-20}}{2}$

$x=\frac{2 \pm \sqrt{-16}}{2}$

$x=\frac{2 \pm \sqrt{16} \times \sqrt{-1}}{2}$

we know that square root of -1 is "i" which is a complex number

$\begin{array}{l}{\mathrm{x}=\frac{2 \pm 4 i}{2}} \\\\ {\mathrm{x}=1 \pm 2 i}\end{array}$

Hence, the roots of the given quadratic equation are 1 + 2i and 1 – 2i

6 0

2 years ago

Help me,,.,,.,.,,,,,..,,,,..

Stella [2.4K]

Answer:

Step-by-step explanation:

that's a right angle

4 0

2 years ago

The local hardware store has blue buckets that hold 2 gallons of water and white buckets that hold 5 gallons of water. You bough

Katarina [22]

Answer:

4 White, 3 Blue

Step-by-step explanation:

5w+2b=26

Closest five multiple that leaves an even remainder is 4.

5×4=20

26-20=6÷2=3

5 0

2 years ago

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Does the blue on the graph represent a function ?

choli [55]

Answer:

Nope

Step-by-step explanation:

It doesnt. Functions look like that

6 0

2 years ago

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