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8090 [49]
3 years ago
5

Two numbers are of the ratio 3:5. If their difference is 18, find the numbers.

Mathematics
1 answer:
lozanna [386]3 years ago
5 0
Est Answer: say the numbers<span> are x and y......and y being the bigger </span>number<span> ... </span>If<span> the </span>ratio<span> is 5:3, then </span>difference<span> between </span>ratio<span> = 5-3 = 2 ... Substituting this x = 5y/3 in equation x-y=</span>18<span> we </span>get<span> ... therefore x = 5 * 27/</span>3 = 5<span>*9 = 45 .... One </span>number<span> is 5 more than another. </span>their<span> sum is 53 what are the </span>two numbers<span>?</span>
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Solve the equation 3x+5y=15 for y
larisa86 [58]
<span> 3x+5y = 15
       5y = -3x + 15
         y = -3/5(x) + 3

hope it helps


</span>
7 0
4 years ago
Which fraction represents the decimal 0.12<br> a) 1/12<br> b) 3/25<br> c) 4/33 <br> d ) 33/4
almond37 [142]

Answer:

The fraction that represents the decimal  0.12  is  3/25

Step-by-step explanation:

step 1: find the  place value  of the last digit in 0.12

Since they are 2 digits in 0.12 the   place  value  of last  digit is  the  100 th, therefore  0.12 is the same as  12/100

step 2: simplify 12/100  by dividing both the denominator and numerator  by 4

that is   <u>1</u><em><u>2 divide by 4   = 3  and 100 divide by 4  =25</u></em>

therefore  the fraction = 3/25


5 0
3 years ago
Read 2 more answers
50 BIG POINTS! Help me on math please!  @ Apologiabiology, @ Bookishfairy73
nekit [7.7K]
Rate of change is also knkown as slope which is found by
\frac{y2-y1}{x2-x1}=slope if you know 2 points/ordered pairs
aos, if x incheases while y decreases then slope is negative
when x increases while y increases then slpe if positive
also, if you can convert to y=mx+b, m=slope
another thing if you have ax+by=c then slope=-a/b

so first one
2x-5y=15
a=2
b=-5
-2/-5=2/5
slope=2/5
positive

next
y=-4x
-4 =slope=negative


x increases while y decreases
negative

x increases while y decreases
negative


so
Positive
Negative
Negative
Negative





A. 6x-3y=12
sloope=-6/-3=2

B. y=5x+b
slope=5

C. (8-2)/(3-1)=6/2=3
sloope=3

D. goes up 4 units and goes right 1 unit, 4/1=4
sloope=4


5 is greates
B is the answer









A. (6-3)/(4-3)=3/1=3
slope=3

B. y=4+6x
slope=6


C.12x+6y=18
slope=-12/6=-2

D. goes down 5 units as it goest 1 uniit to right aka -5./1
slope=-5


greatest is 6
B is answer











the starting value I would guess si when x=1 what is the greats y value

look at each
first one
A. x=1 and =-3

B.y=3x-8
y=3(1)-8
y=3-8
y=-5

C. 8x+4y=16
8(1)+4y=16
8+4y=16
4y=8
y=2

D. at 1 unit to right it is 1 nit up so y=1


greatest is  2 or C





so just subsitute 1 for x since x represents how many teaspoons
y=16(1)560
y=16+560
y=576 caloris for 1 sugar teaspoon

for honey, just read off the graph
for when x=1
y=504

so calores of sugar=576
calories in honey=504






ANSWERS

Postive
Negative
Negative
Negative

B

B

C

sugar=576
honey=504
4 0
3 years ago
Read 2 more answers
PLZ HELP!!!!!!!!!!!!!!
Vsevolod [243]

Answer:

Isn't that just soild liquid and gas atoms?

The image is showing how the atoms change depending on which state of matter it is, so if it is a soild the atoms would be really compacted as it moves slower, if it's a liquid then it's more looser than a soild, but more compacted than a gas, and a gas is just moving a lot and has a lot more space.

^^ That would be the answer if you on the states of matter or something like that unit.

6 0
3 years ago
Read 2 more answers
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