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soldier1979 [14.2K]
3 years ago
13

lens asks heila to choose any number. he then multiplies it by 2, adds 3 to that number and then subtracts it by 6. he ends up w

ith 11. What was heila's original number
Mathematics
2 answers:
Reil [10]3 years ago
8 0
The original number is 7
rjkz [21]3 years ago
6 0

Answer:

7

Step-by-step explanation:

Create an equation where x represents the original number:

(2x + 3) - 6 = 11

Solve for x:

(2x + 3) - 6 = 11

(2x + 3) = 17

2x = 14

x = 7

So, the original number was 7.

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Awsner this with step by step (can use calculator)​
ss7ja [257]

Answer:

x = 9.2

x =22.0

x = 8.7

Step-by-step explanation:

Required

Find x

(a)

x is calculated using tangent formula

\tan(57) = \frac{x}{6}

Make x the subject

x = 6 * \tan(57)

x = 6 * 1.5399

x = 9.2394

x = 9.2 --- approximated

(b):

x is calculated using cosine formula

\cos(60) = \frac{11}{x}

Make x the subject

x = \frac{11}{\cos(60)}

x = \frac{11}{0.5}

x =22.0

(c):

x is calculated using sine formula

\sin(60) = \frac{x}{10}

Make x the subject

x = 10 * \sin(60)

x = 10 * 0.8660

x = 8.660

x = 8.7 --- approximated

3 0
3 years ago
Solve each system of linear or non-linear equations. Show all work!!<br> 3x - 4y = 13<br> 2x + y = 5
OLga [1]
Answer: See below

Explanation:

3x - 4y = 13 (1)
2x + y = 5 (2)
——————
3x - 4y = 13
4(2x + y = 5) (2) times 4
——————-
3x - 4y = 13
8x + 4y = 20
——————-
11x = 33
x = 33/11
x = 3

Plug x = 3 in (2):

2(3) + y = 5
6 + y = 5
y = 5-6
y = -1

Thus, x = 3 and y = -1
6 0
3 years ago
Need a lil help plz and thank you
Tpy6a [65]

Answer:

draw line to left  without including -6

Step-by-step explanation:

all answers to x must be less than -6

8 0
2 years ago
What is the sum of 2,480 - 170
Natalija [7]

Answer:

2,310

Step-by-step explanation:

6 0
1 year ago
Read 2 more answers
Please help me asap!!!!!!!!
lesantik [10]
12.) This does not follow the rule of conservation because on the reactant side there is one Na and two Cl while the product side only has one Na and Cl. They are not equal and do not have the same number of atoms for the different elements. In the law of conservation matter cannot be created or destroyed and this does not follow the law.

13.) 2Na + Cl2 —> 2NaCl

Put a 2 in front of Na and a 2 in front of NaCl
4 0
2 years ago
Read 2 more answers
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