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2 years ago

CAN SOMEONE PLEASE HELP ME????

Mathematics

1 answer:

Softa [21]2 years ago

8 0

Answer:

C. x-int: -1; y-int: 0.5

Step-by-step explanation:

As the line is the straight line so the linear equation corresponds to it has the formula as following: $y=a*x +b\\$

1) The y-intercept is the point at which the line crosses the y-axis.

The line crosses y-axis at point A(x1; y1), with x1 = 0

As it can be seen in the graph, the line crosses y-axis at point A(0; 0.5)

=> The y-intercept is 0.5

2) The x-intercept is the point at which the line crosses the x-axis.

The line crosses y-axis at point B(x2; y2), with y2 = 0

As it can be seen in the graph, the line crosses x-axis at point B(-1;0)

=> The x-intercept is -1

=> x-int: -1; y-int: 0.5

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The ratio of the height of two similar pyramids is 4:7. The volume of the smaller pyramid is 1,331cm, to the nearest whole numbe

IRISSAK [1]

Answer:

The volume of the larger pyramid is equal to $7,133\ cm^{3}$

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

In this problem, the ratio of the height is equal to the scale factor

$z=\frac{4}{7}$

step 2

Find the volume of the larger pyramid

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z----> the scale factor

x----> volume of the smaller pyramid

y----> volume of the larger pyramid

$z^{3}=\frac{x}{y}$

we have

$z=\frac{4}{7}$

$x=1,331\ cm^{3}$

substitute

$(\frac{4}{7})^{3}=\frac{1,331}{y}\\ \\(\frac{64}{343})=\frac{1,331}{y}\\ \\y=343*1,331/64\\ \\y=7,133\ cm^{3}$

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2 years ago

Can someone help me out my math grads are bad

dimaraw [331]

Answer:

Perimeter = 9x + 12x + 15x

Perimeter = 36x (simplified)

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3 years ago

Read 2 more answers

Y varies inversely as the fourth power of x and when x=3, y=1.

masya89 [10]

The constant of proportionality if y varies inversely as the fourth power of x and when x=3, y=1 is k = 3^¼

<h3>Inverse variation</h3>

y = k ÷ x^¼

where,

Constant of proportionality = k

When x = 3, y = 1

y = k ÷ x^¼

1 = k ÷ 3^¼

1 = k / 3^¼

cross product

1 × 3^¼ = k

k = 3^¼

Therefore, the constant of proportionality if y varies inversely as the fourth power of x and when x=3, y=1 is k = 3¼

Learn more about inverse variation:

brainly.com/question/10252139

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Proportional reasoning is the ability to compare two things using information given, in math, it is most frequently defined as comparing quantities. For something to be proportional, there has to a constant ration of another quantity.

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2 years ago

What is the height of a cubic prism containing 125 cubes

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