-x-4=9 ( find the x )

Answers

Answer 1

Answer: X=-13
Because 9 plus 4 is 13 but x can't be negative so you divide my negative 1 and get x=-13

Answer 2

Answer: You need to make x the subject. This means only x needs to be on one side of the equals sign.
-x-4=9
you need to keep x positive so +x on both sides (because it is the opposite of minus)
-4=9+x
minus the nine on both sides (because it is the opposite of adding)
-11=x
This is the answer.
-11=x

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The temperature T in degrees Celsius of a liquid t minutes after heating is given by the formula T=8√t. When is the temperature 48 degrees celsius?

Answers

The temperature reach to 48 degree Celsius in 2.5 minutes.

What is Equation?

Equations are mathematical statements with twoalgebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

The temperature T in degrees Celsius of a liquid t minutes after heating is given by the formula T=8√t.

So, when the temperature = 48 degree Celsius

48 = 8√t

48/ 8 = √t

6 = √t

t= 2.445

t= 2.5 min

Hence, the time will taken 2.5 min.

Learn more about Equation here:

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T=8√t
T=temperature
t=time in minutes.
If T=48, we have to calculate the time.

48=8√t
(48)²=(8√t)²
2304=64t
t=2304 / 64=36

answer: 48 degrees Celsius will be reached in 36 minutes.

Write multiples of 5 and 8. use least common multiple to simplify 120/160

Answers

well you divide each number by 5 to start
120/5=24
160/5=32
now you take each answer (24 & 32) and divide them by 8
24/8=3
32/8=4
Your answer is going to be 3/4

Jason is saving up for a skateboard and helmet. The skateboard is 45.50 with tax and the helmet is 18.25 with tax. He earned 1/3 of the money by mowing lawns and the rest by babysitting. How much did jason earn with babysitting

Answers

Answer:

2/3 of the money, $42.50

Step-by-step explanation:

The total Jason is saving is ...

$45.50 +18.25 = $63.75

If 1/3 was earned by mowing, the remaining 2/3 was earned by babysitting. Two thirds of the amount is ...

(2/3) × $63.75 = $42.50

Jason earned $42.50 by babysitting.

5 Select the correct answer. Michael had $550 in his savings account. He took out $30.75 every month for one year. What is the net change in Michael's account balance following these withdrawals? A $519.25 B. $369 O c. $369 OD. $519.25 Reset Next