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2 years ago

I need help because Im losing it

Mathematics

1 answer:

Vlad [161]2 years ago

3 0

The fraction of the colored part is 10/12 or 5/6. None of the option is correct

<h3>Fractions and proportions</h3>

Fractions are written as a ratio of two integers. From the given question;

3 square divided into4 equal parts will have a total of 12 parts. If Kelly colors 10 parts, the fraction of the colored part will be:

Fraction. = 10/12

Fraction = 5/6

Hence the fraction of the colored part is 10/12 or 5/6

Learn more on proportion here: brainly.com/question/19994681

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Use the identity (x+y)(x^2−xy+y^2)=x^3+y^3 to find the sum of two numbers if the product of the numbers is 28, the sum of the sq

lara31 [8.8K]

Step-by-step explanation:

We have xy = 28, x² + y² = 65 and x³ + y³ = 407.

Since (x + y)(x² - xy + y²) = x³ + y³,

x + y = (x³ + y³)/(x² + y² - xy)

= (407) / [(65) - (28)]

= 407 / 37

= 11.

Hence the sum of the numbers is 11.

4 0

3 years ago

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Willis analyzed the following table to determine if the function it represents is linear or non-linear. First he found the diffe

lakkis [162]

His mistake is that he used the differences of 6, 10 and 14 instead of the differences of 7, 17 and 31.

i.e. for a linear function, the y values should have a constant rate of change and not the differences.

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4 years ago

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Maya is solving the quadratic equation by completing the square.

kvasek [131]

Step-by-step explanation:

factor 4 out of the variable terms, as this helps.

but my approach is simply to define the target and then calculate "backwards".

we want to find

(ax + b)² = a²x² + 2abx + b²

and now we compare with the original equation :

a²x² = 4x²

a² = 4

a = 2

2abx = 16x

2×2×bx = 16x

4b = 16

b = 4

b² = 16, but we have only 3, so we need to subtract 16-3 = 13 from the completed square.

so, our equation is

(2x + 4)² - 13 = 0

(2x + 4)² = 13

2x + 4 = sqrt(13)

2x = sqrt(13) - 4

x = sqrt(13)/2 - 2

6 0

2 years ago

Explain how to graph y > 2x + 3

Leona [35]

>; < - dot line

≥; ≤ - solid line

>; ≥ - shading above the line

<; ≤ - shading below the line

----------------------------------------------

y = 2x + 3 - it's a linear function. We only need two points to plot the graph. Select two any x values and calculate the y values:

for x = 0 → y = 2(0) + 3 = 0 + 3 = 3 → (0, 3)

for x = -2 → y = 2(-2) + 3 = -4 + 3 = -1 → (-2, -1)

y > 2x + 3

Dot line an shading above the line (look at the picture).

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4 years ago

What is the height of a rectangle when I base is 8 ft and the area is 30 ft

ZanzabumX [31]

To do this you have to fill in the equation $base*height=area$ , but you don't know the height, so we'll use $h$ for height. Plugging in the numbers you gave me, the equation is: $8*h=30$ . To solve this, we need to find $h$ . To find height you do $\frac{area}{base}$ . Doing this, we get $h$ = 3.75 ft.

Hope this helped!

3 0

3 years ago