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2 years ago

Help me please!!!!!!!!!!!

Mathematics

1 answer:

Leona [35]2 years ago

4 0

Answer: 5x+4=-54 is the equation with the same value of x as 5/6*x + 2/3=-9

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N-10+9n-3 <br>combine the like terms

Shkiper50 [21]

Answer:

10n-13

Step-by-step explanation:

n is positive and 9n is positive so you add 9n and n

9n+n=10n

10 is negative and so is 3 so you do negative 10 minus 3

-10-3=-13

10n-13

3 0

2 years ago

A train is traveling at a constant rate of 70 miles per hour.

denis-greek [22]

Answer:

2.5 hours

Step-by-step explanation:

Time is distance divided by speed.

Therefore, you'd have to do 175/70

175/70 = 2.5

7 0

2 years ago

Translate this sentence into an equation.

Slav-nsk [51]

Answer : m - 21 = 63

Solution : m = 63 + 21

m = 84

Mable's age is 84 years

5 0

2 years ago

Read 2 more answers

Consider the quadratic function f(x)=−x^2+4x+12

777dan777 [17]

<h2>Answer:</h2>

The smallest x-intercept is x= -2

The largest x-intercept is x= 6

The y-intercept is y= 12

<h2>Step-by-step explanation:</h2>

We are given a function as follows:

$y=f(x)=-x^2+4x+12$

The x-intercept of a function is the value of x where the function is equal to 0.

i.e.

$y=f(x)=0$

$-x^2+4x+12=0$

i.e.

$x^2-4x-12=0\\\\x^2-6x+2x-12=0$

( We used the method of splitting the middle term)

$x(x-6)+2(x-6)=0\\\\(x+2)(x-6)=0$

i.e.

$x=-2\ and\ x=6$

Hence, the smallest x-intercept is: x= -2

and the largest x-intercept is: x=6

The y-intercept is the value of y where x=0

i.e. we have:

$y=-0^2+4\times 0+12\\\\y=12$

4 0

3 years ago

Evaluate e/4 +2f -3 when e = 12 and f = 1/2

Svet_ta [14]

Idk the answer . . ......

4 0

2 years ago