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4 years ago

Elaluate the expression when y=5 and x=47. x - 6y

Mathematics

2 answers:

lys-0071 [83]4 years ago

6 0

Answer:

1410

Step-by-step explanation:

-6 times 5 is -30

47 times -30 is -1410

Kazeer [188]4 years ago

6 0

Answer:

Step-by-step explanation:

first you would susitute the variables so your equation is going to be

47-6*5

after just follow pemdas

6*5=30

47-30=17

so your answer is 17

hopes that helps

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Company A charges $40 per hour plus a $100 fee. Company b charges $180 per hour with no fee. For how many hours is company b the

Lilit [14]

Answer:0.714

Step-by-step explanation:

5 0

3 years ago

You’ve bought a cylindrical thermos 8 in. high with a base 6 in. across. How much coffee can you put in the thermos?

lana66690 [7]

Answer:

3.706 liters

Step-by-step explanation:

Hello

assuming that these measures correspond to the internal measures of the thermos,

we can calculate the volume as, the volume of a cylinder, which is given by

$V=\pi r^{2} h$

where r is the radius of the base, and h the height

also

Diameter=2r

r=Diameter/2

Step 1

let

h=8 in

base = diameter = 6 inch

r=diameter/2

r=6/2 inch,r=3 inch

Step 2

Put the values into the equation

$V=\pi r^{2} h\\V=\pi (3in)^{2} (8 in)\\V=\pi *72 \ in^{3} \\\\V=72\pi\ in^{3} \\\\$

Step 3

Now, the unit (cubic inches) is not an usual unit for measuring coffee, let´s convert cubic inches into liters by knowing

1 inch = 2.54 cm

1 litro = 1000 cubic centimeters

$if\ 1\ inch\ = 2.54\ cm\\(1\ inch)^{3} =(2.54\ cm)^{3}\\\\1\ inch^{3}=16.3870\ cm^{3}$

1 cubic inch = 16.3870 cubic centimeters

$1\ cubic\ inch\ = 16.3870\ cubic\ centimeters\\\\\\72\pi =x?\ cubic\ centimeters\\\\x=\frac{72\pi \cubic \ inch\ \*16.3870 }{1\ cubic\ inch} \\\\x=3706.65\ cubic\ centimeters$

Step 4

Finally, convert cubic centimeters into liters $1000\ cubic\ centimeters =1\ liter \\\\\\3706.65\ cubic\ centimeters = x?\ liters\ centimeters\\\\x=\frac{3706.65 \cubic \ centimeters\ \*1 liter}{1000 cubic centimeters} \\\\x=3706.65\ cubic\ centimeters\\x=3.706 Liters$

I can put 3.706 liters in the thermos

Have a good day

4 0

4 years ago

Hey, can someone please explain to me this problem. I’m not understanding Segment Addition Postulate. Sorry for the bad handwrit

loris [4]

The measure of the segment DF is 2 2/3

<h3>Segment Addition postulate</h3>

The segment addition postulate states that given 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.

A line is a distance between two points. From the given line;

DF = F - D

Given the following

F = -1 1/3
D = -4

Substitute

DF = -1 1/3 - (-4)

DF = 4 - 4/3

DF = 8/3

DF =2 2/3

Hence the measure of the segment DF is 2 2/3

Learn more on Segment Addition postulate here: brainly.com/question/2134445

#SPJ1

6 0

2 years ago

On Monday, jack and Jill walked from their house up the hill to get to the bus stop. They walked 4 yards every three seconds. Wr

never [62]

Answer: Our required equation will be

$3d=4t$

Step-by-step explanation:

Since we have given that

Jack and Jill walked 4 yards every three seconds

As we know that

$Speed=\frac{Distance}{Time}\\\\Speed=\frac{4}{3}\text{ yards per seconds}\\$

Now, we need to find the find the equation to represent the distance,d,

Jack and Jill walked over time t .

So here it is,

$Distance=Speed\times Time\\\\d=\frac{4}{3}\times t\\\\d=\frac{4}{3}t\\\\3d=4t$

Hence, our required equation will be

$3d=4t$

4 0

3 years ago

Which step is incorrect when solving the equation 2(x+9)=4(x+7)+2?

iragen [17]

Answer:

3. 2x+18=4x+26

Step-by-step explanation:

2(x+9)=4(x+7)+2

2x+18=4x+28+2

2x+18=4x+30

The step that made an error in solving this linear equation is step 3.

Hope this helps ;) ❤❤❤

8 0

4 years ago

Elaluate the expression when y=5 and x=47. x - 6y ​

Elaluate the expression when y=5 and x=47. x - 6y