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3 years ago

Estimating products 3 times 558

Mathematics

1 answer:

777dan777 [17]3 years ago

5 0

600X3=1,800
round to the nearest hundreds 558 rounds up at 600 because 5 or more you round up, 5 or less you round down

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There are seven balls in a bag(red, orange, green, yellow, white, black, and purple. If you draw a ball and flip a coin, the cha

Alex17521 [72]

The chance of purple is 14% and the chance of tails is 50%.

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3 years ago

Find the value of Q in the following system so that the solution to the system is {(x,y) : x-3y=4}

Assoli18 [71]

Answer:

Q=2

Step-by-step explanation:

hello :

the solution to the system is

{(x,y) : x-3y=4} means infinty solution

X-3y=4 ....(*)

Qx-6y=8....(**)

multiply (*) by -2

-2x+6y = -8 (***)

add (*) and (***) : (Q-2)x =0

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3 years ago

What's the square root of 1331 to the third power

ivanzaharov [21]

Answer:

48559 if to the nearest whole number

48558.7 if to the nearest tenth

8 0

3 years ago

Read 2 more answers

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geniusboy [140]

Answer:

AC = 7.5 cm

Step-by-step explanation:

Given that the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{AC}{DE}$ = $\frac{BC}{DE}$ , substitute values

$\frac{AC}{3.5}$ = $\frac{7+8}{7}$ , that is

$\frac{AC}{3.5}$ = $\frac{15}{7}$ ( cross- multiply )

7AC = 52.5 ( divide both sides by 7 )

AC = 7.5 cm

4 0

3 years ago

Write a possible third degree polynomial with integer coefficient that have zeros: 1 2i, -4. Assume the leading coefficient to b

jasenka [17]

Answer:

The polynomial is:

$p(x) = x^3 + 2x^2 - 3x + 20$

Step-by-step explanation:

A third degree polynomial can be written in function of it's zeros $x_1, x_2, x_3$ the following way:

$p(x) = a(x - x_1)(x - x_2)(x - x_3)$

In which a is the leading coefficient.

Integer coefficient that have zeros: 1+2i, 1-2i, -4

Leading coefficient: 1

$p(x) = 1(x - (1+2i))(x - (1-2i))(x - (-4))$

$p(x) = (x - 1 -2i)(x - 1 + 2i)(x + 4)$

$p(x) = ((x-1)^2 - (2i)^2)(x + 4)$

$p(x) = (x^2 - 2x + 1 - 4i^2)(x + 4)$

Since $i^2 = -1$

$p(x) = (x^2 - 2x + 1 + 4)(x + 4)$

$p(x) = (x^2 - 2x + 5)(x + 4)$

$p(x) = x^3 + 4x^2 - 2x^2 - 8x + 5x + 20$

$p(x) = x^3 + 2x^2 - 3x + 20$

3 0

3 years ago