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Stolb23 [73]
3 years ago
9

Which property is used in the following expression ? 8(2 + 7) = 16 + 56

Mathematics
2 answers:
nikdorinn [45]3 years ago
8 0

Answer:

Distributive property

Step-by-step explanation:

Nuetrik [128]3 years ago
7 0
I need pints im so sorryy
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3500 miles divided by 175 Miles Per Hour. 3500/175=20 Hours.
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3 years ago
The pulse rates, in beats per minute, for some students of a class are shown below:
Crazy boy [7]

Answer:

Put another dot on 79

Step-by-step explanation:

Because the plot shows that 79 must have 4 dot.So you need to add one more dot

7 0
2 years ago
Please help me with these problems
S_A_V [24]

Answer:

1.a=2

2.  C  x=2  and x=-3

Step-by-step explanation:

The standard form for the quadratic function is  

ax^2 +bx+c

so  we need to rewrite the function to be in this form

2x^2 -10 = 7x

Subtract 7x from each side

2x^2 -7x-10 = 7x-7x

2x^2 -7x-10 = 0

a =2, b= -7  c=-10


2.  The quadratic formula is

-b ± sqrt(b^2 -4ac)

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

2a


2x^2 + 2x=12

Lest get the equation in proper form

2x^2 + 2x-12 = 12-12

2x^2 +2x-12 =0

a=2  b=2 c=-12

Lets substitute what we know

-2 ± sqrt(2^2 -4(2)(-12))

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

2(2)

-2 ± sqrt(4+96)

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

2(2)

-2 ± sqrt(100)

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

4

-2 ± 10

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

4

-2 + 10               -2-10

-----------   and  --------------

4                             4

8/4   and -12/4

2  and -3

8 0
3 years ago
You have prices to rev
Alex17521 [72]

Answer:

34 minutes

Step-by-step explanation:

Given

Time\ Spent = 6

Phone\ Calls = 40

Required

Number of minutes left to spend (x)

Since there's only 1 minute left to spend on every other call;

Time left = x * 1

Time left = x

The required can further be calculated using:

Time\ Spent + Time\ Left = Phone\ Calls

This gives:

6 + x = 40

Subtract 6 from both sides

x = 40 - 6

x = 34

<em>Hence, there are 34 minutes left to spend</em>

8 0
3 years ago
Helppp aaaaaaaaaaaaaaAaaaa
vitfil [10]
The first one is C and the second one is B
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2 years ago
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