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Dominik [7]
2 years ago
15

Can someone tell what order of operations problem makes 13?

Mathematics
1 answer:
almond37 [142]2 years ago
8 0

Answer:

4 + (2 + 1)2 = 4 + (3)2 = 4 + 9 = 13

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Round to the nearest tenth.
laila [671]

Answer:

8.2 units

Step-by-step explanation:

Given that the only information for our triangle are 2 sides and 1 angle, we must use the Law of Cosines to find side BC

<u />

<u>Recall the Law of Cosines</u>

<u />a^2=b^2+c^2-2bc\cdot cos(A)

<u>Identify angles and sides</u>

<u />m\angle A=23^\circ\\a=BC=?\\b=AC=14\\c=AB=6

<u>Solve for side "a"</u>

<u />a^2=b^2+c^2-2bc\cdot cos(A)\\\\a^2=14^2+6^2-2(14)(6)\cdot cos(23^\circ)\\\\a^2=196+36-168cos(23^\circ)\\\\a^2=222-168cos(23^\circ)\\\\a=\sqrt{222-168cos(23^\circ)}\\ \\a\approx8.2

Therefore, the length of line segment BC is about 8.2 units

8 0
2 years ago
A flower pot, in the shape of a cylinder,l has a circumference of 66 in. and a height of 30 in.
Vaselesa [24]
The amount of soil that the pot can hold is best approximated by calculating for the volume of the cylinder through the equation,
                                V = πr²h
We first calculate for the radius, r, given the circumference, C
                      C = 2πr;    r = C/2π = 66 in/2(π) = 10.5 in
Then, substituting the known values. 
                             V = π(10.5 in)²(30 in) 
                                 V = 10,390.81 in³
Thus, the volume of the soil is approximately 10,400. The answer is the third set.
6 0
3 years ago
If you add 15 to 3 times the mystery number you get 78 was the mystery number
andreyandreev [35.5K]
So the equation looks like this : 15*3x=78
subtract 15 from both sides:        -15      -15
then divide by 3 from both sides
to isolate the variable:                  3x=63
                                                      3/3x=63/3
                                                        x=21 (your mystery number is 21)
8 0
2 years ago
7 1/6- 4 2/3<br><br><br><br><br> Please help meee
Pavlova-9 [17]

Answer:

2\frac{1}{2}

Step-by-step explanation:

7-4=3

now let's change the denominator by finding the lcd (lowest common denominator)

<em>factors of 3:</em> 3, 6, 9, 12...

<em>factors of 6:</em> 6, 12, 18, 24...

both 3 and 6 has 6 as their lcd

3 x 2= 6

1/6 -4/6= -3/6

REDUCE

-1/2

3-1/2

2 1/2

3 0
1 year ago
Read 2 more answers
if jack is sitting on the chair no 14 from the left Find his place from the right if the chairs are numbered from 1 to 40 ?
Levart [38]

Answer:

26

Step-by-step explanation:

if his chair is 14 away from the left he would be 26 away from the right

8 0
3 years ago
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