You could make them have the same denominator, making it 7/10-5/10=2/10.
The answer is 2/10, or simplified, 1/5.
Answer: There are 5 grasshoppers, 15 crickets and 20 ladybugs
Step-by-step explanation:
The question in english is:
Jose has found several insects. There are 10 less grasshoppers than crickets. There are 5 less crickets than ladybugs. If Jose has found 5 grasshoppers, how many ladybugs did he find and how many crickets? Write two equations to solve the problem.
Let's tag grasshoppers with
, crickets with
and ladybugs with
.
So, we are tolde there are 10 less grasshoppers than crickets:
(1) We have the first equation
Then, we are told there are 5 less crickets than ladybugs:
(2) This is the second equation
If
and we substitute this in both equations we will have:
(3)
Isolating
:
(4) There are 15 crickets
Substituting (4) in (2):
(5)
Isolating
:
There are 20 ladybugs
Therefore:
There are 15 crickets and 20 ladybugs
D (the last option)
x 2 -2 4 -4
y 8 8 12 12
because the x values should not repeat for the y values.
Answer:
the supplementary angles are 41° and 139°
Step-by-step explanation:
let one of the the supplymentary angle be x
the other angle = 3x + 16
now, since we know they are supplementary, their sum = 180°
=》x + 3x + 16° = 180°
=》4x = 180° - 16°
=》x = 164° ÷ 4
=》x = 41 °
so, one of the angles is x = 41°
the other one is : 3x + 16
=》(3 × 41°) + 16°
=》123° + 16°
=》139°