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3 years ago

60 − (7 + 4) × 5 what is the answer

Mathematics

2 answers:

hichkok12 [17]3 years ago

8 0

Answer:

Step-by-step explanation:

ryzh [129]3 years ago

5 0

Answer:

Step-by-step explanation:

because 7+4=28 x 5 =140-60=80

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if 10 800 cm2 of material is available to make a box with a square base and an open top find the largest possible volume of the

lubasha [3.4K]

Let

x--------> the length side of the square base of the box

y-------> the height of the box

we know that

The surface area of the box is equal to

$SA=4xy+x^{2}$

$SA=10,800\ cm^{2}$

$10,800=4xy+x^{2}$

$y=(10,800-x^{2})/(4x)$

$y=(2,700-0.25x^{2})/(x)$ --------> equation A

the volume of the box is equal to

$V=x^{2}y$ --------> equation B

Substitute the equation A in the equation B

$V=x^{2}*(2,700-0.25x^{2})/(x)$

$V=x*(2,700-0.25x^{2})$

$V=(2,700x-0.25x^{3})$

using a graphing tool

see the attached figure

For $x=60\ cm$

$Volume=108,000\ cm^{3}$

the point $(60,108,000)$ is a maximum of the function

Find the dimensions of the box

$x=60\ cm$

Find the value of y

$V=x^{2}y$

$y=V/x^{2}$

$y=108,000/60^{2}$

$y=30\ cm$

The dimensions of the box are

$60\ cm*60\ cm*30\ cm$

The largest possible volume of the box is

$108,000\ cm^{3}$

7 0

3 years ago

Read 2 more answers

WHICH EXPRESSION IS EQUAL TO 3(X+3)-4

kap26 [50]

Answer: simplified expression is 3x+5
Explanation:
3(x+3)-4
-Distribute (multiply) 3 through parentheses to get
3x+9-4
-subtract the 9 and 4 to get
3x+5
That’s your solution to a simplified equation!!

7 0

3 years ago

Determine the functions value when x= -1?a. g(-1) = -3b. g(-1) = 0c. g(-1) = 1d. g(-1) = 27

Ber [7]

Problem

Determine the functions value when x= -1?

a. g(-1) = -3

b. g(-1) = 0

c. g(-1) = 1

d. g(-1) = 27

Solution

For this case we just need to find the value of g when x= -1 and if we look at the table we got:

g(-1)= (-1)^3 + 6(-1)^2 +12(-1) +8

g(-1)= -1 +6 -12+8 = 5-12+8= 1

And then the solution for this case would be:

c. g(-1) = 1

3 0

2 years ago

Find the equation of the line using the point-slope formula. Write the final equation using slope-intercept form. (1,2) with a s

Naily [24]

Answer:

$y-2=\displaystyle-\frac{6}{7}(x-1)$

$y=\displaystyle-\frac{6}{7}x+\frac{20}{7}$

Step-by-step explanation:

Hi there!

Point-slope form: $y-y_1=m(x-x_1)$ where m is the slope and $(x_1,y_1)$ is a point that falls on the line

Plug in the slope, -6/7, and the given point, (1,2):

$y-2=\displaystyle-\frac{6}{7}(x-1)$

To write the equation in slope-intercept form, isolate y:

$y-2=\displaystyle-\frac{6}{7}(x-1)\\\\y-2=\displaystyle-\frac{6}{7}x+\frac{6}{7}\\\\y=\displaystyle-\frac{6}{7}x+\frac{6}{7}+2\\\\y=\displaystyle-\frac{6}{7}x+\frac{20}{7}$

I hope this helps!

5 0

3 years ago

1+1 sjssssssssssssssssss

Nesterboy [21]

Answer:

Step-by-step explanation:

Please Mark me brainliest

7 0

3 years ago