MATHEMATICS MIDDLE SCHOOL

Make the following changes to the number 7.849: make the 7 worth 1/10 as much.

Answers

Answer 1

Answer:

Answer:

The change applied to 7.849 is to multiply it by 0.1 to get 0.7849.

Step-by-step explanation:

We need to make 7 in 7.849 worth $(1)/(10)$ .

Now, $(1)/(10)$ = 0.1

Thus, to make 7 in 7.849 worth 0.1, we multiply the number by 0.1

i.e. 7.849 × 0.1 = 0.7849

Hence, the change applied to 7.849 is to multiply it by 0.1 to get 0.7849.

Answer 2

Answer: So you want 7 to be 1/10 of much. Pretty easy. All you need to do is change 1/10 into a decimal by dividing.

1 ÷ 10 = 0.1

Now you multiply 7 and 0.1

7 × 0.1 = 0.7

So your answer is 0.7!

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You are solving an equation and have simplified each side. You see that there is a term containing the variable on each side, both having a negative coefficient. Explain what you would choose to do and why.

Answers

I would multiply both sides by negative one and then take the smaller of the two variables and subtract that from both sides, simplify and solve.

Help pleeeaaseWhat is the best approximation of the solution to the system to the nearest integer values?

A.
(1, 3)

B.
(3, 2)

C.
(2, 3)

D.
(3, 4)

Answers

C. (2,3) The solution to the system of equations is where the two lines will intersect. looking at the graph that point is closest to C. (2,3)

5x + 2y = 16 ⇒ 5x + 2y = 16
x + 3y = 12 ⇒ 5x + 15y = 180
      -13y = -164
       -13 -13
   y = 12 8/13
       5x + 2(12 8/13) = 16
   5x + 25 3/13 = 16
      -25 3/13   -25 3/13
   5x = -9 3/13
      5 5
   x = -1 11/13
   (x, y) = (-1 11/13, 12 8/13)
B. (3, 2)

A store advertises 15% off an item that regularly sells $300.what is the sale price off the item?

Answers

15% of $300

= (15/100) * 300

= 45

The sale price = 300 - 45 = 255

Sale price = $255

im pretty sure the price would have to be 255 (:

PLease help 10 pointsSeven years from now the age (a) of Jose will be __________.
Which expression matches this situation?

A) 7a

B) a - 7

C) a + 7

D) 7 - a

Answers

Answer:

C) a + 7

Step-by-step explanation:

To correctly express this algebraic expression we just have to separate the terms, the age of Jose is oue incognita, and to know his age 7 years from now we just have to add the years that we know the age from today, and in this problem they ask us to create an expression that shows his age 7 years from now:

the age is expressed by "a", and 7 is the number of years from now that we want to know his age:

a+7

Is the correct expression.

Seven years from now he will be older so add each year that will pass

a+7

Sarah bought 5 items for a total of $24. A bracelercosts $5 and a pair of sunglasses costs $4.50.
Write a system of equations and determine how
many of each item she purchased.
("Einstein" letters)