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Inessa05 [86]
3 years ago
10

Can someone please help? (Year 9 Math) This question is on fractions. Please see picture attached (ex. 2a and b) please show met

hod of working.

Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0

for 2a, use the theorems of geometry and such to look at the area of the square as 16 squares total, then use the lengths and Sim/cos rule for the triangular area, then subtract and you have you shaded area.

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What is the value of x in the solution set of -5x-15>10+20x
spayn [35]

Answer:

The answer is x < -1

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Hoped this helped!

brainly, please?

3 0
3 years ago
Two trains are 400 miles apart, and their speeds differ by 10 mph. They travel toward each other and meet in 4 hours. Find the s
Katen [24]
So.. the two trains, are 400 miles apart, their speeds differ by 10, so one train is faster than the other.. .let's say   train A is faster than train B, by 10mph

so if train A has a speed rate of "r", then B has a rate of "r - 10"

after train A has beeng running for 4hrs, it has travelled a distance "d"

train B has travelled also for 4hrs, they're both 400 miles apart, and travelling towards each other, so the total distance travelled by both is 400miles

so after 4hours B has travelled the slack from 400 and "d", namely 400 - d

recall your d = rt --> distance = rate * time

\bf \begin{array}{lccclll}&#10;&distance&rate&time\\&#10;&-----&-----&-----\\&#10;\textit{Train A}&d&r&4\\&#10;\textit{Train B}&400-d&r-10&4&#10;\end{array}\\\\&#10;-----------------------------\\\\&#10;&#10;\begin{cases}&#10;\boxed{d}=4r\\&#10;400-d=(r-10)4\\&#10;----------\\&#10;400-\boxed{4r}=(r-10)4&#10;\end{cases}

solve for "r", to find the speed of the faster train A

what's the speed of B? well, B's rate is r - 10
4 0
3 years ago
Please help me with this
Kisachek [45]

All you need to do is replace the variables with the numbers given.

t=9 & u=11

3+ 11t - 9u

3+ 11(9)-9(11)

3+ 99 - 99

The 99's cancel each other out, so you are left with 3.

The answer is 3.



7 0
3 years ago
Read 2 more answers
What is the 1st term when 3x3 − 7x + 6x4 − 2x2 is arranged in descending order?
azamat
The correct option is 6 X 4.
To arrange in descending order means that you will write the largest value first followed by the other smaller ones. From the question given above, we have the following values:
3x3 = 9
6 x 4 = 24
-2 x 2 = -4 and we have  -7x.
Thus, the largest value is 6 x 4.
4 0
3 years ago
Read 2 more answers
7.884 roundest to the nearest hundredth
a_sh-v [17]

Answer:

7.88

Step-by-step explanation:

7.88 because 4 is less than 5 so the number stay the same.

4 0
3 years ago
Read 2 more answers
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