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3 years ago

Ruchi travelled 149 cm 415 in a week How much distance did she travel in a day

Mathematics

1 answer:

tankabanditka [31]3 years ago

7 0

Answer:

171.85 cm

Step-by-step explanation:

Given data

We are given that the distance = 149 cm 415in

Let us mark the units uniform by converting inches to cm

1 inches = 2.54cm

415 inches= x cm

cross multiply

x= 415*2.54

x= 1054.1 cm

Hence the total distance in cm is 1054.1+149= 1203cm

If in 7 days he travels 1203cm

in 1 day he will travel x cm

cross multiply

7x= 1203

divide both sides by 7

x= 1203/7

x= 171.85 cm

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4 more than twice a number is -10

timama [110]

Answer:

The number is -3

Step-by-step explanation:

Write an equation

2x+4=-10

add 4 on both sides

2x=-6

divide 2 on both sides to isolate variable

x=-3

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3 years ago

Jhon is making brownies for 48 of his family members. he can make 16 brownies from one package, and he expects everyone yo eat 2

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3 years ago

Can someone plz help me with this!

asambeis [7]

Answer:

(arranged from top to bottom)

System #3, where x=6

System #1, where x=4

System #7, where x=3

System #5, where x=2

System #2, where x=1

Step-by-step explanation:

System #1: x=4

$2x+y=10\\x-3y=-2$

To solve, start by isolating your first equation for y.

$2x+y=10\\y=-2x+10$

Now, plug this value of y into your second equation.

$x-3(-2x+10)=-2\\x+6x-30=-2\\7x=28\\x=4$

System #2: x=1

$x+2y=5\\2x+y=4$

Isolate your second equation for y.

$2x+y=4\\y=-2x+4$

Plug this value of y into your first equation.

$x+2(-2x+4)=5\\x+(-4x)+8=5\\x-4x+8=5\\-3x=-3\\x=1$

System #3: x=6

$5x+y=33\\x=18-4y$

Isolate your first equation for y.

$5x+y=33\\y=-5x+33$

Plug this value of y into your second equation.

$x=18-4(-5x+33)\\x=18+20x-132\\-19x=-114\\x=6$

System #4: all real numbers (not included in your diagram)

$y=13-2x\\8x+4y=52$

Plug your value of y into your second equation.

$8x+4(13-2x)=52\\8x+52-8x=52\\0=0$

<em>all real numbers are solutions</em>

System #5: x=2

$x+3y=5\\6x-y=11$

Isolate your second equation for y.

$6x-y=11\\-y=-6x+11\\y=6x-11$

Plug in your value of y to your first equation.

$x+3(6x-11)=5\\x+18x-33=5\\19x=38\\x=2$

System #6: no solution (not included in your diagram)

$2x+y=10\\-6x-3y=-2$

Isolate your first equation for y.

$2x+y=10\\y=-2x+10$

Plug your value of y into your second equation.

$-6x-3(-2x+10)=-2\\-6x+6x-30=-2\\-30=-2$

<em>no solution</em>

System #7: x=3

$y=10+x\\2x+3y=45$

Plug your value of y into your second equation.

$2x+3(10+x)=45\\2x+30+3x=45\\5x=15\\x=3$

3 0

3 years ago

Which function is the inverse of f(x)=9x-3

DIA [1.3K]

F^-1(x)= x/9 + 1/3

To find this, just interchange the variables and solve for y.

y=9x-3
x=9y-3
x+3=9y
divide by nine

3 0

3 years ago

Find the amount of the annuity.

Montano1993 [528]

The formula of the future value of annuity ordinary is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT payment 6200
r interest rate 0.06
K compounded semiannual 2
N time 5 years
Fv=6,200×(((1+0.06÷2)^(2×5)) ÷(0.06÷2))=277,742.72

Hope it helps

5 0

3 years ago

Ruchi travelled 149 cm 415 in a week How much distance did she travel in a day​

Ruchi travelled 149 cm 415 in a week How much distance did she travel in a day