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UkoKoshka [18]
3 years ago
14

Colin was thinking of a number. Colin divides by 11 then adds 3 to get an answer of 15. Form

Mathematics
1 answer:
nadezda [96]3 years ago
3 0

Answer:

X/11 +3 = 15

Step-by-step explanation: Just work backwards if you need to solve for x. 15-3 is 12. 12 times 11 is 132.

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Please help with algebra problem
kumpel [21]
Number of weekend minutes used: x
Number of weekday minutes used: y

This month Nick was billed for 643 minutes:
(1) x+y=643

The charge for these minutes was $35.44
Telephone company charges $0.04 per minute for weekend calls (x)
and $0.08 per minute for calls made on weekdays (y)
(2) 0.04x+0.08y=35.44

We have a system of 2 equations and 2 unkowns:
(1) x+y=643
(2) 0.04x+0.08y=35.44

Using the method of substitution
Isolating x from the first equation:
(1) x+y-y=643-y
(3) x=643-y

Replacing x by 643-y in the second equation
(2) 0.04x+0.08y=35.44
0.04(643-y)+0.08y=35.44
25.72-0.04y+0.08y=35.44
0.04y+25.72=35.44

Solving for y:
0.04y+25.72-25.72=35.44-25.72
0.04y=9.72

Dividing both sides of the equation by 0.04:
0.04y/0.04=9.72/0.04
y=243

Replacing y by 243 in the equation (3)
(3) x=643-y
x=643-243
x=400

Answers:
The number of weekends minutes used was 400
The number of weekdays minutes used was 243
6 0
3 years ago
Water stations will be place every 600 meters of a 15 kilometer race. How many water stations will be needed
notka56 [123]
Given there are 1 thousand meters in a kilometer, then there will be a water station every .6 kilometers
Dive 15 by .6
There will be 25 water stations
7 0
3 years ago
What is 7/8 as a percent? it wants me to show work so plz tell me how i get the answer!
aksik [14]

Answer:

= 0.875

= 87.5 %

Explanation:

7 /8

= 0.875

In percentage

= 0.875 x 100

= 87.5 %

3 0
3 years ago
Read 2 more answers
What is the value of x ?
valina [46]

Answer:

The value of x = 9

Step-by-step explanation:

∵ The figure has right angle and a line ⊥ from the right angle to the hypotenuse

∴ There is a relation between the ⊥ line and the two parts of the hypotenuse

∴ (⊥)² = multiplication of the two parts of the hypotenuse

∴ (6)²= 4 × x

∴ 36 = 4 × x

∴ x = 36/4 = 9

4 0
3 years ago
Look at circle B below. The circumference of the circle is approximately 157 units. Which best represents the area of circle B?
TiliK225 [7]

Answer:

area of circle B=1964 square unit

5 0
2 years ago
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