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Jlenok [28]
3 years ago
8

State whether the ratios form a proportion.

Mathematics
1 answer:
Liula [17]3 years ago
6 0
16 to 18 simplifies down to 8 to 9 because you divide 2 to both terms
24 to 27 simplifies down to 8 to 9 because you divide 3 to both terms
So yes
A
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What fraction has a numerator 8 and is equivalent to 1/2<br><br> 4/8<br> 8/16<br> 8/12 or 8/9
tangare [24]

Answer:

8/16

Step-by-step explanation:

(8÷8)=1 / (16÷8)=2 = 1/2

8 0
3 years ago
Solve the question: (-4)+(-1)+2+5+...+x=437
Alex Ar [27]
The sequence is an arithmetic sequence with
a₁ = -4

d = a₂ - a₁
d = -1 - (-4)
d = -1 + 4
d = 3

an = x

Sn = 437


General formula in arithmetic sequence
Formula to find nth term
an = a₁ + d(n - 1)
Formula to find sum of sequence (sn)
Sn = n/2 (a₁ + an)

We have to make an equation system based on the problem
plug the numbers into the formula
First equation
an = a₁ + d(n - 1)
x = -4 + 3(n - 1)
x = -4 + 3n - 3
x = 3n - 7

Second equation
Sn = n/2 (a₁ + an)
n/2 (a₁ + an) = 437
n/2 (-4 + x) = 437
n(x -  4) = 874
xn - 4n = 874

Solve the equation system by subtitution method
Subtitute x with 3n - 7 in the second equation
xn - 4n = 874
(3n - 7)n - 4n = 874
3n² - 7n - 4n = 874
3n² - 11n - 874 = 0
(3n + 46)(n - 19) = 0
n = -46/3 or n = 19
Because the number of terms shouldn't be negative, -46/3 isn't required, so the value of n is 19.

Solve for x, back to the first equatin
x = 3n - 7
x = 3(19) - 7
x = 57 - 7
x = 50

The solution is 50
6 0
3 years ago
Using the probability scale, what is the probability that a red cube will be drawn when a cube is selected from a bag that has 5
dmitriy555 [2]

Answer:

D

Step-by-step explanation:

Probability is calculated by divided the amount of something you have by the total amount. In this case, 5 red cubes by 10 total cubes to get .5. This falls into evens in your probability scale.

5 0
2 years ago
Read 2 more answers
There are 12 crayons in a box. How many boxes will be needed for 8 children if each child gets 7 crayons?
nata0808 [166]

Each child gets =7×8=56crayoms

  • One box contains 12 crayons

Total boxes

  • 56/12
  • 4.66

Round to next whole as we can't have depict

  • 5 boxes
8 0
2 years ago
Please help!
IgorC [24]

Answer:

(1,-4) is in quadrant IV.

Step-by-step explanation:

3 0
3 years ago
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