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3 years ago

PLEASE HELP ME!!!!! This is important

Mathematics

2 answers:

Verdich [7]3 years ago

7 0

Answer: the answer is 80 cubic inches.

Step-by-step explanation:

To find the volume of a cube, you have to multiply length, width, and height. Therefore that is 4x5x4= 80 cubic inches

mariarad [96]3 years ago

7 0

Answer is: 80 cubic in.

Formula- L x W x H

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Which of the following is a solution to<br> the equation 0 = x2 – 8x – 13?

Fed [463]

Answer:

x= 32 ± √29

Step-by-step explanation:

x² - 8x - 13 = 0

ax² + bx + c = 0

Comparing equations we get,

a=1

b=(-8)

c=(-13)

Using quadratic formula,

________

x= b² ± √ b²-4ac

—————————

Substituting the values

__________

x= 64 ± √( 64 + 52)

______________

= 32 ± √29

Hope this answer helps you....

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4 years ago

What is 2.3 (3 reapeating )as a fraction

Eddi Din [679]

The answer is 2 $\frac{1}{3}$ .

. $\frac{}{3}$ equals $\frac{1}{3}$ , so by adding 2 the answer is 2 $\frac{1}{3}$ .

7 0

3 years ago

Read 2 more answers

The values (9.4,11) and (11,y) are from an inverse variation. Find the missing value and round to the nearest hundredth.

marusya05 [52]

Answer: 9.4

Step-by-step explanation:

Here the x-coordinates and y-coordinates have the inverse relation.

⇒ $x\propto\frac{1}{y}$

⇒ $x=\frac{k}{y}$

Where k is variation constant.

Since, point (9.4, 11) is from the inverse variation,

Therefore, this point must be satisfy the above condition,

That is, $9.4=\frac{k}{11}$

$k=103.4$

Thus, the relation between the coordinates is,

$x=\frac{103.4}{y}$

Put x = 11, in the above function,

$11=\frac{103.4}{y}$

$y=\frac{103.4}{11}=9.4$

3 0

3 years ago

Read 2 more answers

Write an equation for the line in point-slope and slope-intercept forms.

kobusy [5.1K]

point-slope form: y-y₁ = m(x-x₁)

=============

$\rightarrow \sf y - 5 = \dfrac{5}{3} (x-3)$

slope-intercept form: y = mx + b

============

$\rightarrow \sf y - 5 = \dfrac{5}{3}(x)+ \dfrac{5}{3}(-3)$

$\rightarrow \sf y - 5 = \dfrac{5}{3}(x)-5$

$\rightarrow \sf y = \dfrac{5}{3}(x)-5+5$

$\rightarrow \sf y = \dfrac{5}{3}(x)$

6 0

3 years ago

Read 2 more answers

F(x)=x2-10 and g(x)=11-x find (f-g)(x)(f-g)(10) and (f/g)(x) if they exist

tester [92]

Answer:

$(f - g)(x) = x^2 + x-21$

$(f - g)(10) = 89$

$(f/g)(x) = \frac{x^2 - 10}{11 - x}$

Step-by-step explanation:

Given

$f(x) = x^2 - 10$

$g(x) = 11 - x$

Solving (1): (f-g)(x)

$(f - g)(x) = f(x) - g(x)$

Substitute values for f(x) and g(x)

$(f - g)(x) = x^2 - 10 - (11 - x)$

Open Bracket

$(f - g)(x) = x^2 - 10 - 11 + x$

$(f - g)(x) = x^2 -21 + x$

Reorder

$(f - g)(x) = x^2 + x-21$

Solving (2): (f-g)(10)

In (1)

$(f - g)(x) = x^2 + x-21$

So:

$(f - g)(10) = 10^2 + 10-21$

$(f - g)(10) = 100 + 10-21$

$(f - g)(10) = 89$

Solving (3): (f/g)(x)

$(f/g)(x) = \frac{f(x)}{g(x)}$

Substitute values for f(x) and g(x)

$(f/g)(x) = \frac{x^2 - 10}{11 - x}$

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3 years ago