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3 years ago

HELP ASAP! I REALLY NEED IT!

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

4 0

Answer:

$46 \frac{7}{8} \: cubic \: feet$

Step-by-step explanation:

$\boxed{volume \: of \: prism = base \: area \: \times height}$

Base area= length ×width

Let's convert all the mixed numbers into improper fraction for easier calculation.

Width

= 7½

$= \frac{7(2)}{2} + \frac{1}{2}$

$= \frac{14}{2} + \frac{1}{2}$

$= \frac{15}{2} ft$

Height

= 1¼

$= \frac{4}{4} + \frac{1}{4}$

$= \frac{5}{4} ft$

Volume of prism

$= 5 \times \frac{15}{2} \times \frac{5}{4}$

$= \frac{375}{8}$

$= 46 \frac{7}{8} \: ft {}^{3}$

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3 years ago

Why the output is a zero number ?<br><img src="https://tex.z-dn.net/?f=%28x%20-%203%29%20%5Ctimes%20%28x%20%20%20%2B%204%29%20%3

ELEN [110]

Answer:

see explanation

Step-by-step explanation:

Given

(x - 3) × (x + 4) = 0, that is

(x - 3)(x + 4) = 0

The zero product indicates that (x - 3) = 0 or (x + 4) = 0

x - 3 = 0 ⇒ x = 3

x + 4 = 0 ⇒ x = - 4

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3 years ago

Simultaneous Equations <br> 2x+4y=22 <br> 2x+2y=15

Aleks04 [339]

Answer:

x = 4

y = $\frac{7}{2}$

Step-by-step explanation:

Ummmm

I'm not sure if this is corrrect but this is what I got

So first you solve 2x+4y=22 to find x

and you get x = $-2y+11$

Then you have to subtitute $-2y+11$ for $x$ in $2x+2y=15$

which you then get y= $\frac{7}{2}$

After you have to subttitute y= $\frac{7}{2}$ for y in x = $-2y+11$

which you get as x=4

Finally you get the answer as:

x = 4

y = $\frac{7}{2}$

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3 years ago

The graph below shows a line segment MN: graph of line MN going through ordered pairs negative 2, 3 and 1, negative 3 Which of t

Katyanochek1 [597]

The line segment goes through (-2,3) and (1,-3).

The slope of the line is
$\frac{-3-3}{1-(-2)} = \frac{-6}{3} =-2$

Therefore the equation of the line segment is of the form
y = -2x + b

Because the line segments goes through (-2,3), therefore
-2(-2) + b = 3
4 + b = 3
b = -1

Answer: The equation is y = -2x - 1

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3 years ago