3 years ago

12 divided by 478 using compatible numbers and to find two estimates

Mathematics

1 answer:

Fed [463]3 years ago

6 0

Answer:

we get 48 if we divide both:)

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Arianna earns a weekly salary of $400 plus a 6.5% commission on sales at a gift shop. How much would she make in a workweek if s

lilavasa [31]

Answer:

712

Step-by-step explanation:

400+6.5%of 4800

312+400=712

6 0

3 years ago

Left parenthesis 5 plus 2 square root of 6 right parenthesis squared = a plus b square root of 6 then the value of a and b are

Ganezh [65]

Answer:

The values of $a$ and $b$ are $33$ and $\frac{20\sqrt{3}}{3}$ , respectively.

Step-by-step explanation:

The statement is equivalent to the following mathematic expression:

$\left(5 + 2\sqrt{2})^{2} = a + b\cdot \sqrt{6}$ (1)

By definition of the perfect square trinomial:

$25 + 20\cdot \sqrt{2} + 8 = a + b\cdot \sqrt{6}$

$33 + 20\sqrt{2} = a + b\cdot \sqrt{6}$

And by direct comparison we have the following system:

$a = 33$ (2)

$b\cdot \sqrt{6} = 20\sqrt{2}$ (3)

By (3), we solve for $b$ :

$b = \frac{20}{\sqrt{3}}$

$b = \frac{20\sqrt{3}}{3}$

The values of $a$ and $b$ are $33$ and $\frac{20\sqrt{3}}{3}$ , respectively.

6 0

3 years ago

Determine whether the number is rational or irrational: -21*

timofeeve [1]

Answer:

Rational

Step-by-step explanation:

Pi is a rational number

6 0

2 years ago

What is the coefficient of the term -21xy

Arturiano [62]

Answer:

-21

Step-by-step explanation:

In the term -21xy, -21 is the coefficient. It comes before the variables that are x and y.

4 0

3 years ago

Hi i will give 50 POINTS and BRAINLIEST to whoever answers this question

Alina [70]

Answer:

$\boxed{4 : 1}$

Step-by-step explanation:

Colored Fabric = 48 mm

White Fabric = 1.2 cm

Ratio of white fabric to colored fabric is:

48 mm : 1.2 cm

To express any ratio, we need to equalize the units ( 1 cm = 10 mm)

=> 48 mm : 12 mm

÷12 ÷12

=> 4 : 1

3 0

3 years ago

Read 2 more answers