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adoni [48]
3 years ago
14

The value of 100-30÷5 with parentheses can have a value of 1l4 or 49. EXPLAIN.

Mathematics
1 answer:
svetlana [45]3 years ago
5 0
The only possible answers are 94 or 14. (100-30)/5= 70/5=14. 100-(30/5)= 100-6=94. These are the only two possible answers.
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The temperature was 78°F at 3 P.M. Each hour for
polet [3.4K]

Answer:

  66 °F

Step-by-step explanation:

At 4 P.M., the temperature had decreased by 3° from the temperature at 3 P.M., so was ...

  4 P.M. temp = 78 °F -3° = 75 °F

This was repeated until 7 P.M.

  5 P.M. temp = 75 °F -3° = 72 °F

  6 P.M. temp = 72 °F -3° = 69 °F

  7 P.M. temp = 69 °F -3° = 66 °F

The temperature at 7 P.M. was 66 °F.

__

Of course the repeated subtraction can be simplified using multiplication. The subtraction of 3° four times is equivalent to the subtraction of . . .

  (3°)(4) = 12°

That is, the temperature at 7 P.M. is ...

  78 °F -3°×4 = 78 °F -12° = 66 °F

6 0
2 years ago
Is 16x2 + 24x + 9 a perfect square trinomial
fredd [130]
16x²=(4x)², 9=3², 24x=2*4x*3
so this is a perfect square: (4x+3)² 
5 0
3 years ago
Divide using long division.<br> (2x2 + 7x + 6) : (x + 2)
Usimov [2.4K]

Answer:

2x+3

Step-by-step explanation:

-2x2 - 7x - 6

--------------------

-x-2

-2x2 - 7x - 6  =   -1 • (2x2 + 7x + 6)

 -x - 2  =   -1 • (x + 2)

 2x2 + 7x + 6

x • (2x+3) and      (x+2)  •  (2x+3)

answer- 2x+3

4 0
3 years ago
Read 2 more answers
A photographer buys a new camera for $1350. Every year the camera decreases in value by 10%.
bagirrra123 [75]

Answer:

A(t)=1350(0.9)^t

i hope this helps :)

4 0
3 years ago
Determine whether the point (2, 2) is a solution to the system of equations. Explain your reasoning in complete sentences. Prove
goblinko [34]

Answer:

(0,2) is the solution of the given functions.

Step-by-step explanation:

We have been given two functions  f(x)=|x-1|+1  and g(x)=3x+2

To find the solution of the two functions mathematically, we will equate the given functions:

3x+2=|x-1|+1

3x+1=|x-1|

When we will open the modulus function we will have two values +, -

In positive case:

3x+1 =x-1

2x=-2

x=-1

Now, substitute x=-1 in g(x)=3x+2 we get

g(-1)=3(-1)+2=-1

Hence, (-1,-1) is the solution of the given functions.

In negative case:

Now, 3x+1=-(x-1)

3x+1=-x+1

4x=0

x=0

Now, put x=0 in g(x)=3x+2 we get

g(0)=3(0)+2=2

We have another solution: (0,2)

The point (2,2) is not the solution.

And graphically, the solution of two functions is their intersection point which is (0,2)

Hence, (0,2) is the solution of the function.


6 0
3 years ago
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