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Ivan
3 years ago
6

If the length of a rectangle is 5y-7 and the width is 3y,represent the area of the rectangle

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

15y^2 - 21y

Step-by-step explanation:

A = LW

A = (5y - 7)(3y)

A = 15y^2 - 21y

KATRIN_1 [288]3 years ago
8 0

Answer:

A = 15y² - 21y

Step-by-step explanation:

3y(5y - 7)

15y² - 21y

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Right or left
Anvisha [2.4K]

Answer:

1) null: π = 0.5, alternative: π > 0.5

2)p^= 80/124 =0.645

std error =(phat(1-phat)/n)1/2 =0.0430

3)z = (phat-p)/std erro =(0.645-0.5)/0.0430 =3.22

4)The observed proportion of couples who leaned to the right when kissing is 3.22 standard deviations above the null hypothesized value of 0.50

5)We have strong evidence that the proportion of couples that lean their heads to the right while kissing is more than 50%

7 0
3 years ago
For what value(s) of x is the fraction 5x-10/x^2-25 undefined?
EleoNora [17]

Answer:

+5 or -5.

Step-by-step explanation:

Given equation,

5x-10/x^2-25

When you divide something with zero, it becomes undefined. So, to be undefined, x will have to be that value which makes the divisor zero.

Now,  x^2-25= 0

Or, x^2= 25

Or, x= +5,-5.

So, for the value +5 and -5, the divisor becomes zero and makes the whole equation undefined.

8 0
3 years ago
Why is this wrong?? Trying to do test corrections
UNO [17]

Answer:

See answer below

Step-by-step explanation:

  y = one time fee

  35x = hourly rate( hours worked)

  35x + y = $190

   y =  - 35x = 190

 

  $35 per hours ×  hours work and you did not used the total cost $190

Next time rewrite the sentence and translate into an equation.

The  customers service charges = one-time fee + hourly rate$ ( hours worked)

                                          190   =  y + 35(x)    point slope form

                                        - 35x + 190 = y

5 0
2 years ago
2,7, 12, ...<br> Find the 46th term.
Alex787 [66]

Given is an A.P. in which -

  • First term,a = 2
  • Common difference = Second term - First term

\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad = a_2-a_1

\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad = 7-2

\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad = 5

<h3><u>Solution:- </u></h3>

nth term of an A.P ,is given by-

\green{ \underline { \boxed{ \sf{a_n =a+(n-1)d }}}}

where

  • a_n = nth \;term
  • a = first term
  • n = number of term
  • d = common difference

Putting n = 46

\begin{gathered}\\\implies \sf a_{46}= 2 + (46-1)\times 5  \\\end{gathered}

\begin{gathered}\\\implies \sf a_{46}= 2 + 45\times 5  \\\end{gathered}

\begin{gathered}\\\implies \sf a_{46}= 2 + 225  \\\end{gathered}

\begin{gathered}\\\implies \sf a_{46}= 227 \\\end{gathered}

\longrightarrowTherefore, the 46th term is 227

7 0
2 years ago
Find the missing yard
KIM [24]

Answer:

6 yards

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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