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Llana [10]
3 years ago
7

The sum of twice a number and seven

Mathematics
1 answer:
sergejj [24]3 years ago
7 0

Answer:

2x+7

Step-by-step explanation:

The word sum indicates addition.

Twice a number is 2x

and 7 is plus 7

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If B = {−13, −9, −7, −3}, choose the set A that will make the following statement false.
Svetach [21]

Answer: c.A is the set of rational numbers

Step-by-step explanation:

B ⊆ A means that every element of B is an element of A

B = { -13 , -9 , -7 , - 3 }

The element of B are negative integers , this mean that the element of A must also be integers therefore :

Option a is correct.

Option b is also correct

Rational numbers are numbers that can be express in the form a/b , examples are : 1/2 , 3/ 4 , 5/6 ...

clearly , this does not necessarily define A , so option c is the odd one out

5 0
3 years ago
Need help pls help me
Kryger [21]

y = \frac{3}{4} x + ( - 2)

4 0
3 years ago
There were 2,626,418 deaths in 2014 according to the CDC. 614,348 of these deaths were caused by diseases of the heart and 136,0
Alex777 [14]

Answer:

= 0.714 (in decimal fraction)

The probability that the death in 2014 was not caused by heart diseases or Unintentional Injuries = 0.714

= 0.714

Step-by-step explanation:

Let's interpret the question our way ti solve it .

Total deaths in 2014:

2626418

Death caused by Heart Diseases:

614348

Death caused by Unintentional Injuries:

750401

Therefore, we can deduced that, the number of death not caused by Heart Diseases or Unintentional Injuries = Total deaths in 2014 minus sum of the recorded death.

= 2626418 - ( 614348 + 136053)

= 2626418 - 750401

= 1876017.

Now, the probability that there were death in 2014 is 1 (one)

To find the probability that death we're not caused by heart diseases or Unintentional Injuries:

= 1 - Pr (Death Caused by heart diseases) + Pr (Death causes by Unintentional Injuries)

= 1 - (0.234 + 0.052)

= 1 - 0.286

= 0.714

To Check:

= 1876017 / 2626418

Divide to the lowest term

=0.714

5 0
3 years ago
I need help on number 3
TiliK225 [7]
Divide 17.5 by 0.07
;;;;;;;;;;
5 0
3 years ago
Read 2 more answers
Helpppp I attached a ss
joja [24]

Answer:

the answer is 7×9=(7×10)-(7×1)

5 0
3 years ago
Read 2 more answers
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