Ask question

Ask question

All categories

3 years ago

15

Duane and mick are saving their money to build a new tree house.Duane adds 5 dollars.Mick adds 2 dollars every week.So far they

saved 45 dollars.How many weeks have they been saving their money?

1 answer:

DerKrebs [107]3 years ago

6 0

Answer:

7 weeks

Step-by-step explanation:

45 divided by seven gives you 6.42857142857 but it is in weeks so you round it to 7.

You might be interested in

Completing the Square: results in 2 solutions<br> x^2 + 3x = -2

mr Goodwill [35]

Add 2 to both sdies
now if we can facor, then if
xy=0 then x and/or y=0
note:xy=x times y and x(y) =x times y

x^2+3x+2=0
what 2 number multiply to get 2 and add to get 3
the numbers are 2 and 1
(x+2)(x+1)=0
set them to zero
x+2=0
subtract 2
x=-2

x+1=0
subtract 1
x=-1

x could be -1 or -2
x=-2, or -1

4 0

3 years ago

Can someone helpp pleaseee, ill paypal you 15$

svetoff [14.1K]

Step-by-step explanation:

The angles on the same side of the parallel lines and the transversal are called corresponding angles.

Corresponding angles are congruent

So 11x+1 = 10x+10

x = 10-1 = 9

11*9+1 = 100

So both are 100 degrees

7 0

3 years ago

Please help with this question!!

xxMikexx [17]

$\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2\\\\l\perp k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\\text{We have the points J(-24, -4) and K(-4, 6)}.\\\\\text{The formula of a slope:}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{substitute:}\\\\m_1=\dfrac{6-(-4)}{-4-(-24)}=\dfrac{10}{20}=\dfrac{1}{2}\\\\\text{therefore}\ m_2=-\dfrac{1}{\frac{1}{2}}=-2\\\\\text{The formula of a midpoint:}\\\\\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)\\\\\text{substitute the coordinates of the points J and K:}$

$x=\dfrac{-24+(-4)}{2}=\dfrac{-28}{2}=-14\\\\y=\dfrac{-4+6}{2}=\dfrac{2}{2}=1\\\\\text{midpoint}\ (-14,\ 1)\\\\\text{The point-slope form:}\\\\y-y_1=m(x-x_1)\\\\\text{substitute}\ m=-2,\ x_1=-14\ \text{and}\ y_1=1:\\\\y-1=-2(x-(-14))\\\\\boxed{y-1=-2(x+14)}$

8 0

3 years ago

Convert the cartesian equations to a polar equation<br> y=4x^2

alexdok [17]

Answer:

B

Step-by-step explanation:

7 0

3 years ago

What is the determinant of this matrix:

vodka [1.7K]

Answer:

-56

Step-by-step explanation:

Formula to get determinant is::

$\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] = ad-bc$

0(0)-8(7)

0 - 56

-56

6 0

2 years ago

Read 2 more answers