A wire is (7x – 3) meters long. A length of (3x – 4) meters is cut for use(a) How much wire is left?

Answer:

[tex]21.3\:\mathrm{mi}[/tex]

Step-by-step explanation:

The Law of Cosines is given as the following:

[tex]c^2=a^2+b^2-2ab\cos C[/tex].

Plugging in given values and solving, we get:

[tex]c^2=15^2+18^2-2\cdot 15\cdot 18\cdot \cos 80^{\circ},\\c\approx \fbox{$21.3\:\mathrm{mi}$}[/tex]

Answer:

C: 21.3

Step-by-step explanation:

b = √a2 + c2 - 2ac·cos(B) = 21.33612

Answer:

The correct answer is,

[tex] - 8m + 24 - 32n[/tex]

Answer:

a) 4

b) 1

c)2

Step-by-step explanation:

a) 5y - y

= 5 - 1

=4

b) 3×1×1 + 2×1 + 3×0×0

= 3 - 2 + 0

1

c) 2×1×1 - 3×1×1×0

= 2 - 0

= 2

Answer:

-22

Step-by-step explanation:

Order of Operations:

Parenthesis

Exponents

Multiplication and Division

Addition and Subtraction

First, you need to do parenthesis first so inside the parenthesis is 2+4 which is 6

Now the equation looks like this:

5 x 6-52

Since there are no exponents we can skip that step, next is multiplication so 5 x 6 is 30 so the equation now looks like this:

30-52

Subtract and you will have

-22

Hope this helps!

Answer:

a) x+2=0

x= -2

b) 2x-1=0

2x=1

x= 1/2

c) 3x=0

x= 0/3

x=0

Answer:

c = 20

Step-by-step explanation:

Given that,

A rectangle PQRS,

QT = c and ST = 4c-60

We need to find the value of c.

We know that the diagonals of a rectangle bisect each other such that,

QT = ST

Putting values,

c = 4c - 60

Taking like terms together,

60 = 4c - c

60 = 3c

c = 20

Hence, the value of c is 20.

Answer:

Get smart and stay safe :D

Answer:

- 5 / 7

Step-by-step explanation:

1 - 6 = - 5

4 - - 3 = 7

Answer and Step-by-step explanation: Let \displaystyle xx be the amount Peter picked. Then Mary and Lucy picked \displaystyle 2x2x and \displaystyle x+2x+2, respectively. So

\displaystyle x+2x+x+2=26x+2x+x+2=26

\displaystyle 4x=244x=24

\displaystyle x=6x=6

Therefore, Peter, Mary, and Lucy picked 6, 12, and 8 kg, respectively.

Peter picked 6 kilograms of chestnuts.

Mary picked 12 kilograms of chestnuts.

Lucy picked 8 kilograms of chestnuts.

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.

Let Peter pick x kilograms of chestnuts.

Given that Mary picked twice as many chestnuts as Peter

So, Mary picks 2x kilograms of chestnuts.

And Lucy picks  x + 2 kilograms of chestnuts

Together the three of them picked 26 kg of chestnuts

So, x + 2x + x + 2 = 26

4x + 2= 26

4x= 26-2

4x= 24

4x/4= 24/4

x= 6

Thus, Peter picked 6 kilograms of chestnuts.

⇒ 2x

⇒ 2 (6)

⇒ 12

Thus, Mary picked 12 kilograms of chestnuts.

⇒ x + 2

⇒ 6 + 2

⇒ 8

Thus, Lucy picked 8 kilograms of chestnuts.

Learn more about Arithmetic operations here:

brainly.com/question/25834626

#SPJ2

Answer:

the second and third one

Step-by-step explanation:

two y's that are the same can't have 2 outcomes

Answer:

5 35/36

Step-by-step explanation:

add the whole number: 3+2= 5

add the fractions: 5/12 = 5/9= 35/36

add the whole number and fraction

5 35/36 so x= 5 35/36

Answer:

4.25+8

Step-by-step explanation:

the double negative makes it a positive

Answer: 3.2x = 48

Step-by-step explanation: So that means x = 15.

Answer:

w+10

Step-by-step explanation:

3w+6-2w+4=w+10

Answer:

Step-by-step explanation:

x subtracted from y means y-x

2w+4 subtracted from 3w+6= (3w+6)-(2w+4)

don't forgett to diestribute invisible -1

-(2w+4)=-1(2w+4)=-2w-4

so

3w+6-2w-4=

3w-2w+6-4=

1w+2=

w+2

17% of 2700=459

17% more= 2700+459

Subscribers this time=3,159

Answer:

Z=25

Step-by-step explanation:

Angle C and D are Supplementary so

3z-15+7z-55=180

10z-70=180

10z=250

z=25

Answer:

Q=7.18

Step-by-step explanation:

9.2-2.02=7.18

Answer:

7.18

Step-by-step explanation:

subtract 2.02 from 9.2

Answer:

If you are looking for an equation, then it would be 25 < x.

Step-by-step explanation:

Answer:

LINE B OR D

Step-by-step explanation:

i hope i could help... not 100%!! <3

Answer: Jonny makes $15 per hour working at Target. He gets a bonus at the end of the month for $85. This month, he made a total of $685. Write an equation to show how many hours he worked

Step-by-step explanation:

1 is 51

2 is 34

3 is 95

5 is 47

6 is 74

7 is 59

Ok that should be right if I didn't mix anything up!

Answer:

12.5%

Step-by-step explanation:

So just make an equation

400x=50

50/400=1/8=.125

.125=12.5

12.5%

Answer:

c. 20%

Step-by-step explanation:

3/15=1/5

1 divided by 5 = .2

Move decimal point 2 times to get percent.

20%

Answer:

K/(1.2)= -0.07

54.6 = 4.2y

-7.2y = 61.2

Math rush please help

Step-by-step explanation:

a/27 = -3.23

K/(1.2)= -0.07

54.6 = 4.2y

-7.2y = 61.2

Math rush please help

Given:

The data table of an experiment.

Equation of best fit line is

[tex]h=0.6t+0.44[/tex]

To find:

The residual (difference) of the data point at t = 7.

Solution:

From the given table, it is clear that the value of h is 3.9 at t =7.

So, observed value is 3.9.

Equation of best fit line is

[tex]h=0.6t+0.44[/tex]

Putting t = 7, we get

[tex]h=0.6(7)+0.44[/tex]

[tex]h=4.2+0.44[/tex]

[tex]h=4.64[/tex]

So, the estimated value is 4.64.

Residual formula:

Residual = Observed value - Estimated value

              = [tex]3.9-4.64[/tex]

              = [tex]-0.74[/tex]

Therefore, the residual value of the data point at t = 7 is -0.74.

Step-by-step explanation:

For every month increase by 1, the amount of dollars increase by 7. (from 65 to 72, 72 to 79, 79 to 86 etc.)

Hence at Month 7, there will be 100 + 7 = 107 dollars.

Answer:

107 dollors

Step-by-step explanation:

For every month, It increase 7 dollars, So it would be 107 bdollors