3 years ago

I need help for tha pre-test?

Mathematics

1 answer:

cestrela7 [59]3 years ago

3 0

Answer:

1.) B

2.) C

3.) D

4.) B

5.) A

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The ratio of hamburgers to hot dogs is 6 to 5. Three times the number of hot dogs is 6 more than twice the number of hamburgers.

Kitty [74]

Answer:the number of hot dogs is 10

Step-by-step explanation:

Let x represent the number of hamburgers.

Let y represent the number of hot dogs.

The ratio of hamburgers to hot dogs is 6 to 5. This means that the ratio of x to y is 6/5

x/y = 6/5

5x = 6y

x = 6y/5

Three times the number of hot dogs is 6 more than twice the number of hamburgers. This means that

3y = 2x + 6 - - - - - - - - -1

Substituting x = 6y/5 into equation 1, it becomes

3y = 2(6y/5) + 6

3y = 12y/5 + 6

Multiplying both sides of the equation by 5, it becomes

15y = 12y + 30

15y - 12y = 30

3y = 30

y = 30/3 = 10

x = 6y/5 = 6×10/5

x = 60/5 = 12

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4 years ago

Trig Cosine - <br>Find x to the nearest tenth.

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Answer:

48.3

Step-by-step explanation:

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3 years ago

27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

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4 years ago

The equation of a line in slope intercept form is y=mc+b where m is the x-intercept. True or False?

ASHA 777 [7]

The equation of a line in slope intercept form is y=mc+b where m is the x-intercept. False. M represents the slope

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4 years ago

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X^3-3x^2=0<br> Write in quadratic form

Reptile [31]

Answer:

x=0,3

Step-by-step explanation:

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3 years ago

I need help for tha pre-test?​

I need help for tha pre-test?