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Brums [2.3K]
3 years ago
8

11) maths question equations

Mathematics
2 answers:
mariarad [96]3 years ago
8 0

Answer:

x= 12

Step-by-step explanation:

Multiply everything by 12 (making it easier to solve) to get

6x + 4x = 3x + 84

Simplify to get

7x = 84

Solve for x and get x=12

Alinara [238K]3 years ago
5 0
Answer
X=12
Explanation
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Right now the number 33 and 89 to estimate their sum
ozzi

<span> <span><span>Addition, you can have 89 + 33 = 122 </span>
<span>Commutative Property by moving: 33 + 89 = 122
<span>Associative Property by grouping: (3 + 30) + (80 + 9 ) = 122 </span>
<span>Distributive Property by allotting: 10 (8.9) + 33 = 113   </span>


</span></span> Other examples include:
Addition, you can have 33 +  = 113 </span>
<span>Commutative Property by moving: 107 + 6 = 113 </span>
<span>Associative Property by grouping: (3 + 3) + (100 + 7 ) = 113 </span>
<span>Distributive Property by allotting: 2 (3) + 107 = 113   </span>

<span>Multiplication, you can have 6 x 107 = 642 </span>
<span>Commutative Property by moving: 107 x 6 = 642 </span>
<span>Associative Property by grouping: (3 + 3) x (100 + 7 ) = 642 </span>
<span>Distributive Property by allotting: 2(3) x 107 = 642<span>
</span></span>

4 0
2 years ago
30 points<br> can somebody please help me<br> question below
Inessa05 [86]

Find the total number of dogs by adding each day:

Total dogs = 23

Percent of dogs: Divide the number of dogs by the total number of patients:

= 23 / 50 = 0.46 x 100 = 46%

Use the given formula to find the standard error:

Standard error = √(0.46*(1-0.46)/50) = 0.07

90%: Find Z value for 90% ( 1.645) multiply by SE:

1.645 x 0.07 = 0.115 = 0.12

Now add and subtract that value from the Percent from above:

46 + 12 = 58%

46-12 = 34%

Answer (34%, 58%)

95%: Find Z value for 95% ( 1.96) multiply by SE:

1.96 x 0.07 = 0.137 = 0.14

Now add and subtract that value from the Percent from above:

46 + 14 = 60%

46-14 = 32%

Answer (32%, 60%)

5 0
3 years ago
Need help, I don’t understand
Ksivusya [100]
34 Degrees because -7 - 27 = -34
4 0
3 years ago
What is 3.245 rounded to the nearest thousandth
kramer
3.25 is rounded to the nearest thousandth 
8 0
3 years ago
Read 2 more answers
The period of a pendulum is the time the pendulum takes to swing back and forth one full time. The function I = 0.81t^2 relates
kogti [31]

Answer:

b.  t = 10.5 seconds.

Step-by-step explanation:

l = 0.81t^2

90 = 0.81t^2

t^2 = 90 / 0.81

t^2 = 111

t = 10.5 seconds.

5 0
2 years ago
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