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2 years ago

Simplify. -3.7(4p - 7

Mathematics

1 answer:

Alchen [17]2 years ago

3 0

Answer:

-14.8p+25.9

Step-by-step explanation:

got it right edge 2020.

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The length of a rectangular flower bed is 2ft longer than the width. If the area is 6ft, then what are the exact length and widt

Marizza181 [45]

Answer:

Exact dimensions:

$width=-1+\sqrt{7}$

$length=-1+\sqrt{7}+2$

$length=1+\sqrt{7}$

Approximate dimensions:

$width=1.64575ft$

$length=1.64575+2$

$length=3.64575ft$

Step-by-step explanation:

Let's assume width of rectangle is w ft

The length of a rectangular flower bed is 2ft longer than the width

so,

length =w+2

$L=w+2$

now, we can find area

$A=L\times W$

now, we can plug it

$A=(w+2)\times w$

$A=w^2+2w$

we are given area =6

so, we can set it equal

and then we can solve for w

$w^2+2w=6$

$w^2+2w-6=0$

we can use quadratic formula

$ax^2+bx+c=0$

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

now, we can compare and find a,b and c

a=1 , b=2 , c=-6

$w=\frac{-2\pm \sqrt{2^2-4\cdot \:1\left(-6\right)}}{2\cdot \:1}$

$w=-1+\sqrt{7},\:w=-1-\sqrt{7}$

we know that dimension can never be negative

so, we will only consider positive value

Exact dimensions:

$width=-1+\sqrt{7}$

$length=-1+\sqrt{7}+2$

$length=1+\sqrt{7}$

Approximate dimensions:

$width=1.64575ft$

$length=1.64575+2$

$length=3.64575ft$

7 0

3 years ago

Help Please I did to finsh

ki77a [65]

Step-by-step explanation:

Hello there!

Again, plug this into the Pythagorean Theorem.

$a^2+b^2=c^2\\2^2+b^2=6^2\\4+b^2=36\\b^2=32\\b=5.65$

7 0

3 years ago

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The mass of 2 large boxes is 16,000 g. One box has a mass of 9,000 g. What is the mass of the other box in kilograms? (1,000 g =

allochka39001 [22]

Answer:

7 kg

Step-by-step explanation:

16000g = 16kg

9000g = 9kg

16 - 9 = 7kg

3 0

3 years ago

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(6u-7c-6)+(-2u+4c) find the sum and express it in simplest form

astra-53 [7]

Answer:

Step-by-step explanation:

(6u)+(-2u)=4u

(-7c)+(4c)=-3c

6=6

4u-3c+6

6 0

2 years ago

Riley has some toy dinosaurs The number she has is one less than 50. Describe the number of toy dinosaurs in two ways.

nalin [4]

The answer is 49 because 50 - 1=49 that is one way but i dont know the other way

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3 years ago

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