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4 years ago

ATTENTION WORTH 50 POINTS PLEASE ANSWER WITHIN 15 MINUTES AND RECIEVE BRAINLIEST

Mathematics

2 answers:

kipiarov [429]4 years ago

7 0

jacobmoney+sarahmoney=totalmoney

totalmoney≥1975 so they can go

so jacobmoney+sarahmoney≥1975

find each

jacobmoney=lawn money=number of lawns mowed times cost per lawn=x times 25=25x

sarahmoney=dogmoney=number of dogs walked times cost per dog walk=y times 15=15y

so therfor

25x+15y≥1975

additionally, number of dog walks that sarah does is no mroea than 4 times number of lawns mowed, means y≤4x

and sarah will walk at least 50 dogs

y≥50

the constraints are

25x+15y≥1975

y≤4x

y≥50

IrinaK [193]4 years ago

5 0

X = amount of lawns
y = amount of dog walks

25x + 15y = 1975

25x + 15(50) = 1975
25x + 750 = 1975
25x = 1225
x = 49

so x ≤ 49 (this number depends on how much Sarah walks)
y ≥ 50 (is how much Sarah walks)

hope this helps

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jennifer had 3/5 of a gallon of liquid shampoo and divided it evenly among 4 other bottles. How many gallons did she put into ea

kirill [66]

If the 3/5 was a whole number, it would all be simple. We would just put the number above 4 and divide. Easy, right?

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3/5=6/10=0.6

Now, I put that over 4, because there are 4 bottles.
0.6/4=6/40=3/20

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6 0

3 years ago

Use properties of addition and subtraction to evaluate the expression. -19 - 53 - 31 Enter your answer in the box.

ivanzaharov [21]

You may combine these 3 numbers in any order.

-19 -53 = -72, and then
-72 - 31 = -103.

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7 0

3 years ago

Read 2 more answers

Put in standard form; identify degree and leading coefficient of polynomial: -4x + 3x2 - 2 + 4x3

Fofino [41]

Answer:

-4 (x-4)

Step-by-step explanation:

simplify the expression

-4x + 16

4 0

3 years ago

What's the following rotational symmetries of oranges regular hexagon

Semmy [17]

Answer:

rotational symmetry of 60 degrees around the origin - yes

rotational symmetry of 120 degrees around the origin - yes

Step-by-step explanation:

A regular hexagon has 6 congruent angles

the the angles created on the line of symmetry are equal to 60 so the angle of rotational symmetry is 60 degrees.

The regular hexagon, like stated before, has 6 congruent angles so the order of symmetry is 6

Here is a visual from basic-matematics

6 0

3 years ago

Steve likes to entertain friends at parties with "wire tricks." Suppose he takes a piece of wire 60 inches long and cuts it into

Alex_Xolod [135]

Answer:

a) the length of the wire for the circle = $(\frac{60\pi }{\pi+4}) in$

b)the length of the wire for the square = $(\frac{240}{\pi+4}) in$

c) the smallest possible area = 126.02 in² into two decimal places

Step-by-step explanation:

If one piece of wire for the square is y; and another piece of wire for circle is (60-y).

Then; we can say; let the side of the square be b

so 4(b)=y

b= $\frac{y}{4}$

Area of the square which is L² can now be said to be;

$A_S=(\frac{y}{4})^2 = \frac{y^2}{16}$

On the otherhand; let the radius (r) of the circle be;

2πr = 60-y

$r = \frac{60-y}{2\pi }$

Area of the circle which is πr² can now be;

$A_C= \pi (\frac{60-y}{2\pi } )^2$

$=( \frac{60-y}{4\pi } )^2$

Total Area (A);

A = $A_S+A_C$

= $\frac{y^2}{16} +(\frac{60-y}{4\pi } )^2$

For the smallest possible area; $\frac{dA}{dy}=0$

∴ $\frac{2y}{16}+\frac{2(60-y)(-1)}{4\pi}=0$

If we divide through with (2) and each entity move to the opposite side; we have:

$\frac{y}{18}=\frac{(60-y)}{2\pi}$

By cross multiplying; we have:

2πy = 480 - 8y

collect like terms

(2π + 8) y = 480

which can be reduced to (π + 4)y = 240 by dividing through with 2

$y= \frac{240}{\pi+4}$

∴ since $y= \frac{240}{\pi+4}$ , we can determine for the length of the circle ;

60-y can now be;

= $60-\frac{240}{\pi+4}$

= $\frac{(\pi+4)*60-240}{\pi+40}$

= $\frac{60\pi+240-240}{\pi+4}$

= $(\frac{60\pi}{\pi+4})in$

also, the length of wire for the square (y) ; $y= (\frac{240}{\pi+4})in$

The smallest possible area (A) = $\frac{1}{16} (\frac{240}{\pi+4})^2+(\frac{60\pi}{\pi+y})^2(\frac{1}{4\pi})$

= 126.0223095 in²

≅ 126.02 in² ( to two decimal places)

4 0

4 years ago