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2 years ago

Fill in the table of values so that this is a proportional relationship with k=3/2

Mathematics

1 answer:

Zigmanuir [339]2 years ago

3 0

Step-by-step explanation:

the table is non-existent

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Cuanto es la raiz cuadrada de 123

krek1111 [17]

Answer:

11.0905365064

11.1 (rounded)

Step-by-step explanation:

$\sqrt{123} =11.090$

5 0

2 years ago

Solve the equation for exact solutions over the interval [0, 2π).

quester [9]

Answer:

$\displaystyle x=\left\{0, \frac{2\pi}{3}, \frac{4\pi}{3}\right\}$

Step-by-step explanation:

We want to solve the equation:

$-2\cos^2(x)=-\cos(x)-1$

Over the interval [0, 2π).

First, notice that this is in quadratic form. So, to make things simpler, we can let <em>u</em> = cos(x). Substitute:

$-2u^2=-u-1$

Rearrange:

$2u^2-u-1=0$

Factor:

$(2u+1)(u-1)=0$

Zero Product Property:

$2u+1=0\text{ or } u-1=0$

Solve for each case:

$\displaystyle u=-\frac{1}{2}\text{ or } u=1$

Back-substitute:

$\displaystyle \cos(x)=-\frac{1}{2}\text{ or } \cos(x)=1$

Using the unit circle:

$\displaystyle x=\left\{0, \frac{2\pi}{3}, \frac{4\pi}{3}\right\}$

7 0

2 years ago

What % of 75 is 19? round to 1 decimal

insens350 [35]

Answer:

25.3%

Step-by-step explanation:

Let P be the percent

Of means multiply and is means equals

P *75 = 19

Divide each side by 75

P* 75/75 = 19/75

P =.25333333

Change from decimal to percent form

P = 25.33333333%

Rounding to one decimal

25.3%

6 0

3 years ago

Read 2 more answers

Does anyone please know the answer to this? Worth 30 points!!!

ch4aika [34]

Answer:

just graph the 2 points then do rise over run

Step-by-step explanation:

6 0

2 years ago

Fred’s company is planning a new logo. The diagrams show two similar versions of the planned logo.

seraphim [82]

Answer:

a=7.2*1.5=10.8 cm

b=6.3/1.5=4.2 cm

$\pounds 4.48*2.25=\pounds 10.08$

Step-by-step explanation:

<u>Proportional Geometric Shapes </u>

A) We are given two similar shapes of a logo. They are to be proportional. We only need to find the proportion ratio of two of them to find the rest of the lengths.

The upper sides have 7.5 cm and 5 cm respectively. This gives us the ratio

$\displaystyle r=\frac{7.5}{5}=1.5$

Which means all the measures of the smaller logo are 1.5 smaller than those of the larger. This means

b=6.3/1.5=4.2 cm

a=7.2*1.5=10.8 cm

B) To paint the logos, we need to cover its surface, so the ratio of the surface is 1.5*1.5=2.25

This means the cost to paint the larger logo is

$\pounds 4.48*2.25=\pounds 10.08$

5 0

3 years ago