3 years ago

Write an equation for the following:

1 answer:

7 0

Answer: 3(x+4)=x+18

Step-by-step explanation: Break down the problem. It says three times the sum of a number and 4. You have to add the number and 4 first. Since you're multiplying by 3, put the sum of a number and 4 in parentheses. This equals the same as eighteen more than the number. It set up how it sounds. Add 18 to the number.

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A car traveled for 6 hours on one highway and for 2 hours on a second highway. If the total distance traveled was 488 miles, and

Nataly [62]

6V + 2(V+12) = 488
8V = 464
V = 58 mph for 6 hours

V+12=70 mph for 2 hours.

check: 58*6 = 348

70*2 = 140

348 +140 =488

the car was traveling at 70 mph on the 2nd highway

7 0

3 years ago

(x^2-4x)^2+7x^2-28x+12=0

Valentin [98]

Answer:

$x^4-9x^2-28x=-12$

Step-by-step explanation:

$(x^2-4x)^2+7x^2-28x+12=0$

$(x^4-16x^2)+7x^2-28x=-12$

$x^4-9x^2-28x=-12$

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3 years ago

HELP PLEASE!!! WILL CROWN BRAINLIEST....

aliina [53]

Answer:

Pattern With Next 2 Terms: –243, 81, –27, 9, -3, 1

Pattern Rule: Start at -243. Divide by -3 each time.

3 0

3 years ago

Maria so 20 shares of stock for a total of 2980 what was the value of one

allsm [11]

The value of one stock would be 149

4 0

3 years ago

Solve the system of linear equations below. 4x - 3y = 17 5x + 4y = 60

LenaWriter [7]

4x-3y=17......(1)
5x+4y=60......(2)

Multiply equation (1) by 4 and equation (2) by 3:-

16x - 12y = 68
15x + 12y = 180

Adding these 2 equations:_

31x = 248
x = 248/31 = 8

Now substitute x = 8 in equation (1):-

4(8) - 3y = 17
32-3y = 17
-3y = -15
y = -15/-3 = 5

So solution is x=8,y=5

5 0

3 years ago