3 years ago

Toni drives a boat 15 km/h upstream and then turns around and drives 25 km/h back downstream to her

Mathematics

1 answer:

Katen [24]3 years ago

6 0

Answer:

plz help

Step-by-step explanation:

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Which of the following expressions is equivalent to 4y + z + y − 8 + 6z

AlladinOne [14]

Answer:

the second one

Step-by-step explanation:

4y+y = 5y

z+6z = 7z

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3 years ago

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What is the area of the circle with a D equals 10

Maslowich

Answer:

A =78.5

Step-by-step explanation:

We need the radius to find the area of a circle

r = d/2 = 10/2 =5

The area of a circle is given by

A = pi r^2

A = 3.14 (5)^2

A =3.14 (25)

A =78.5

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3 years ago

If the rectangle below are similar what Is the length of X

tino4ka555 [31]

It is a
9/4=2.25*2=4.5
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Find the roots of the parabola given by the following equation <br> 2x^2+5X-9=2x

natta225 [31]

Answer:

$x=-3\:or\:x=\frac{3}{2}$

Step-by-step explanation:

The given parabola has equation

$2x^2+5x-9=2x$

We rewrite in standard form to obtain:

$2x^2+5x-2x-9=0$

$2x^2+3x-9=0$

Split the middle terms to get:

$2x^2+6x-3x-9=0$

Factor by grouping:

$2x(x+3)-3(x+3)=0$

$(x+3)(2x-3)=0$

$x=-3\:or\:x=\frac{3}{2}$

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3 years ago

Dan has five times as many $1 bills as $5 bills. he has a total of 48 bills. how many of each does he have?

Sholpan [36]

Let the number of $1 bill be x and $5 bill be y
x=5y
5y+y=48
6y=48
x=40
y=8

number of $1 bill= 40
number of $5 bill = 8

6 0

3 years ago