2 years ago

ON THE SAME STUDY GUIDE! PLEASE HELP

Mathematics

1 answer:

Lera25 [3.4K]2 years ago

3 0

Answer:

x = 4 ; y = 8

Step-by-step explanation:

we can use a system of two equation

x+1 = y-3

y-5 = 2x-5

we can find x in the first equation

x = y -4

we can now substitute x with this value in the second equation

y-5 = 2(y-4)-5

y = 2y-8

y = 8

we can now find x

x = 8-4 = 4

verify

2(4)-5 = 3

8-5 = 3

8-3 = 5

4 + 1 = 5

You might be interested in

Solution of the equation<br> 3x/5+1=4x/15+7

Anika [276]

Answer:

x = 18

Step-by-step explanation:

Given

$\frac{3x}{5}$ + 1 = $\frac{4x}{15}$ + 7 ( subtract 1 from both sides )

$\frac{3x}{5}$ = $\frac{4x}{15}$ + 6

Multiply through by 15 to clear the fractions

9x = 4x + 90 ( subtract 4x from both sides )

5x = 90 ( divide both sides by 5 )

x = 18

4 0

2 years ago

Donna, Neil, and Frank are siblings. Donna is the oldest. Frank’s age is 1/4 of Donna’s age. Right in equation to represent Fran

shusha [124]

D of 1/4 = F
OR
D x 1/4= F

8 0

3 years ago

Translate the statements into a confidence interval for p. Approximate the level of confidence. In a survey of 8451 U.S. adults,

Sedaia [141]

Answer:

The confidence interval is $0.304 < p < 0.324$

Step-by-step explanation:

From the question we are told

The sample proportion $\r p = 0.314$

The margin of error is $E = 0.01$

The confidence interval for p is mathematically represented as

$\r p - E < p < \r p + E$

=> $0.314 - 0.01 < p < 0.314 + 0.01$

=> $0.304 < p < 0.324$

6 0

2 years ago

Can you help with all math questions?

forsale [732]

No but , they can be pretty easy sometimes

7 0

2 years ago

Read 2 more answers

If f(x) = 3x and g(x) = 1/x , what is the domain of (gºf)(x)?

Elanso [62]

Answer: 1/3x

Step-by-step explanation:

5 0

3 years ago