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3 years ago

The table represents the equation y = 8x.

Mathematics

1 answer:

Gelneren [198K]3 years ago

8 0

Answer:

Step-by-step explanation:

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Rosa bought 1 pound of cashews and 2 pounds of peanuts for $10. At the same store, Sabrina bought 2 pounds of cashews and 1 poun

Valentin [98]

Answer:

The solutions are x=4, y=3. Cashews are $4 per pound and Peanuts are $3 per pound.

Step-by-step explanation:

let x = cashews

let y = peanuts

x + 2y = 10 - rosa's purchase

2x + y = 11 - sabrina's purchase

subtract 2x to isolate 'y'

y = 11 - 2x

x + 2(11 - 2x) = 10

x + 22 - 4x = 10 (Use the distributive property.)

-3x = -12

x = 4.00

Plug this into the original equations to find "y"

2(4) + y = 11

8 + y = 11

y = 3

4 + 2y = 10

2y = 6

y = 3

the solutions are: x = 4. y = 3.

5 0

3 years ago

Solve for x the triangles are similar

Reil [10]

Answer:

x = 13

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{DC}{DU}$ = $\frac{CB}{UT}$ , substitute values

$\frac{11x-13}{60}$ = $\frac{169}{78}$ ( cross- multiply )

78(11x - 13) = 10140 ( divide both sides by 78 )

11x - 13 = 130 ( add 13 to both sides )

11x = 143 ( divide both sides by 11 )

x = 13

3 0

3 years ago

For what fraction of a day will a 12-hour digital clock that shows only the hours and minutes display at least one 5 or 6

Brums [2.3K]

Answer: 4/9

Step-by-step explanation:

Find out combinations without 5 or 6.

Minutes with 5 or 6: 05,06,15,16,25,26,35,36,45,46,50–59. It 10+10=20 minutes per hour. And 40 minutes without 5 or 6.

Hours with 5 or 6: 5 and 6. Without 5 and 6 is 0,1,2,3,4,7,8,9,10,11 (10 hours).

Total time without 5 and 6 is 10*40minutes=400 minutes.

Time with 5 or 6 is 12*60–400=320 minutes.

Fraction of a day: 320/(12*60)=4/9=0.44444

7 0

3 years ago

The area of a square is (9a2 − 24a + 16) square units. determine the length of each side of the square by factoring the area exp

Anton [14]

The will be 3x+4 I hope this help you

4 0

3 years ago

What is the inverse of "f"if f(x)=^3 sqrtx-5

sashaice [31]

y=x−5−−−−√3

 x=y−5−−−−√3

8 0

4 years ago

Read 2 more answers