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Art [367]
4 years ago
13

Solve for x. 12:15 = x:5

Mathematics
2 answers:
Elis [28]4 years ago
7 0
15/3 = 5
12/3 = 4
x = 4
vlabodo [156]4 years ago
5 0
You will have to isolate x by multiplying both sides by 5. It'll leave you with (12x5)/15. Then you just do parentheses first, 12x5=60. After you just divide 60 by 15, 60/15=4.
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Trevor Linden, a former player for the Vancouver Canucks, is 1.93 m tall. On a hockey card, he is 5.4 cm tall. What scale was us
Anastaziya [24]

Answer:

scale  used to print the hockey card is 27/965

scale  used to print the hockey card in decimal  is 1/35.74

Step-by-step explanation:

we know that in scale problems

scale is used in drawing to enlarge or reduce size of object by a certain amount

scale = size of object in drawing/ actual size of object

Height of trevor = 1.93 m

we know that  1 m = 100 cm

Height of trevor in cm = 1.93 m*100 = 193 cm (actual size)

(this is done so that unit of measurement is same for card and trevor's height i.e cm)

Trevor's card on hockey card = 5.4 cm(size in drawing)

scale used = Trevor's card on hockey card /Height of trevor in cm

                    = 5.4/193 = 54/ 1930 = 27/965

scale  used to print the hockey card is 27/965

scale  used to print the hockey card in decimal  is 1/35.74

7 0
4 years ago
Find the value of "r" so that the line through (2,-3) and (-4,r) has a slope of -1/2
trapecia [35]
Hi there! The formula for finding slope is y2 - y1/ x2 - x1. -4 represents x2, and 2 represents x1. -4 - 2 is -6. If you think about it, 3/-6 makes -1/2. -3 is y1, so we will be adding, because adding a negative number actually means adding. 0 - (-3) gives us 3. There. The value of r is 0.
4 0
3 years ago
Last year, 320 students were members of Pine Hill Middle School clubs. This year, there was a 20% increase in memberships. How m
arlik [135]

Answer:

384

Step-by-step explanation:

No. of students in the club last year = 320

No. of students in the club this year increased by 20%

To find the actual increase, 20% is multiplied by the number of students in the club last year which is 320 and to find the number of students in the club this year add the answer to 320 (the number of students in the club last year)

That is,

= 20% * 320

= 20/100 * 320

= 64

Finding the number of students in the club this year

320 + 64 = 384 students

<u>NOTE</u> : Increase means addition that is why the number of students in the club last year is added to the actual increase

3 0
3 years ago
Simplify 4(x + 5) - 10x + 4/5
Bumek [7]

Answer:

-6x+104/5

Step-by-step explanation:

Distribute: (4)(x)+(4)(5)+-10x+4/5 = 4x+20+ -10x + 4/5                                                  combine like terms: (4x+-10x) + (20+4/5)                                                                                                                                             simplify:                    -6x                  104/5                                                                     answer: -6x+104/5            

                               

4 0
3 years ago
What is the answer of two plus two
FinnZ [79.3K]

Answer:

Two

Step-by-step explanation:

If you have one and added one you have two

4 0
4 years ago
Read 2 more answers
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