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AfilCa [17]
3 years ago
9

Simplify into one fraction. (-4x/x+7) - (8/x+7)

Mathematics
1 answer:
andre [41]3 years ago
3 0
(-4x/x+7) - (8/x+7)

= -4x-8/x+7
so; the answer is (c)... :)
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Work out the weekly mean number of 50 kg bags of flour used in these 5 weeks
bogdanovich [222]

Answer:

Weekly Mean Number of 50-kg bags =10.8 bags

Step-by-step explanation:

In Week 1, Kim uses 7  50kg bags of flour

In Week 2, Kim uses 14  50kg bags of flour

In Week 3, Kim uses 8 X 50kg bags of flour

In Week 4, Kim uses 13 X 50kg bags of flour

In Week 5, Kim will make 2400 loaves.

Each of these loaves will need 250g of flour.

Total Mass of flour that will be used =2400 X 250=600,000 grams

600,000$ grams=600,000 \div 1000$ kg =600kg\\Number of 50-kg bags =600 \div$ 50 =12 bags

In Week 5, Kim will use 12 bags.

Therefore:

Weekly Mean number of 50kg bags of flour used in these 5 weeks.

=\dfrac{7+14+8+13+12}{5}\\\\ =\dfrac{54}{5}\\\\=10.8 \\ \approx 11$ bags

4 0
3 years ago
class A folds 160 fewer paper cranes than class B and 2/3 as many paper cranes as class C. Class B folds 92 more paper cranes th
krek1111 [17]
Let x = Class A
Let y = Class B
Let z = Class C
Equations from problem:
x - 160 = y
2/3x = z
y + 92 = z
Solving through substitution:
2/3x = y + 92
2/3x = (x - 160) + 92
2/3x = x - 68
-1/3x = -68
3(-1/3x) = 3(-68)
-x = -204
x = 204
Now substitute x in the first equation to get y:
204 - 160 = y
44 = y
44 = Class B
There are 44  folded paper cranes in Class B.

3 0
3 years ago
Solve the system of equations -30 + 7y = -18 and 4x – 4y = 8 by combining<br> the equations.
mariarad [96]
The answer is (4/23,-42/23).
good luck!
6 0
3 years ago
What’s the volume for the rectangular prism
agasfer [191]
I believe the answer is 25 if I’m wrong pls correct me
4 0
3 years ago
Angela drew Triangle ABC. She dilated Triangle ABC by a scale factor of 13 with the center of dilation at the origin. Then she t
ra1l [238]

Answer:

Triangle ABC is similar but not congruent to Triangle XYZ

Step-by-step explanation:

When you dilate the size changes but the angles are the same with makes them similar and since the size of the triangles are different they cannot be congruent.

5 0
3 years ago
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