It takes John 4 times as long as it takes Jessica to mow a lawn. If it took them both 11 hours to mow the lawn, how long would it take John to mow the lawn alone?

Answers

Answer 1

Answer: If you would like to know how long would it take John to mow the lawn alone, you can calculate this using the following steps:

hours (Jessica) ... a
hours (John) ... b = ?
a + b = 11
b = 4 * a
___________
a + b = 11
a + 4 * a = 11
5 * a = 11 /5
a = 11/5 = 2 1/5 = 2.2 hours

b = 4 * a = 4 * 2.2 = 8.8 hours

The correct result would be 8.8 hours.

Answer 2

Answer:

Answer:

8.8 hrs

Step-by-step explanation:

I like ya cut gee

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WILL CHOOSE YOUR ANSWER AS BRAINLIEST!!The height of a 0.5-liter orange juice box with a square base is a function of the width of its base,

$h=(500)/(w^2)$

where w is the width of the base in centimeters. Find the width of the juice box if its height is 20 centimeters.

w =_____cm

Answers

Answer:

5 cm

Step-by-step explanation:

It is given in the question that height and width of the orange juice box are related as:

$h=(500)/(w^(2))$

We have to find the width when h=20 cms

$20=(500)/(w^(2))$

$w^(2)=(500)/(20) =25 (cm)^(2)$

∴w=±5 cm

But width cant be negative,hence w=5 cm.

Find the missing coefficient.

-
y2 − [-5y − y(-7y − 9)] − [-y (15y + 4)] = 0

Answers

There is only one solution in the given equation -y2 − [-5y − y(-7y − 9)] − [-y (15y + 4)] = 0. In solving this problem, apply first PEMDAS (parenthesis, exponents,multiplication, division, addition, subtraction). Then equation will transform into -y2+5y-7y2-9y+15y2+4y=0. Combine terms with same power and achieve 7y2=0. Divide both sides with 7 and perform square root of zero. Since the root is zero, we have one solution of the given equation which is y=0.

Answer:

its -8 if ur on plato be careful the negetive sign is already there <3

Step-by-step explanation:

have a good day

Solve each problem.
1.) 15% means ___?__ out of every 100.

Answers

15% means 15 out of every 100.

15% can also be written as 15/100 and 0.15, just as a little extra information.

What is the slope of the line that passes through the pair of points?
(1, 7), (10, 1)

Answers

$(x_1;\ y_1);\ (x_2;\ y_2)\n\nthe\ slope:m=(y_2-y_1)/(x_2-x_1)\n----------------------\n(1;\ 7);\ (10;\ 1)\n\nm=(1-7)/(10-1)=(-7)/(9)=-(7)/(9)$

Solve and graph the inequalities
100x-200>50x-75

Answers

100x - 200 > 50x - 75

100x - 50x > -75 + 200

50x > 125

x > 2,5

Good Luck

You have a restaurant bill of $61.45. If you are taxed 8 1/2 and decide to tip your server 15%, how much is your total? a. $75.65 b. $75.89 c. $76.32 d. $76.67

Answers

$75.89 i just took the test

Answer:

b. $75.89

Step-by-step explanation:

Edge 2020

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