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KonstantinChe [14]
3 years ago
9

Answer the following question: 7/2h - 3 (5h - 7/2)

Mathematics
1 answer:
sleet_krkn [62]3 years ago
8 0

Answer:

For easy way

convert to decimals first

3.5h - 3 (5h - 3.5)

Open brackets

3.5h - 15h + 10.5

Answer = 10.5 - 11.5h

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Find the measure of c. A. 136 B. 144 C. 123 D. 149
-BARSIC- [3]

Answer:

Option (D)

Step-by-step explanation:

Given quadrilateral in the circle is a cyclic quadrilateral.

By using the property of cyclic quadrilateral,

"Sum of each pair of opposite angles is 180°".

In the given cyclic quadrilateral,

d + 57° = 180°

d = 180 - 57

d = 123°

Similarly, c + 31° = 180°

c = 180° - 31°

c = 149°

Therefore, Option (D) will be the answer.

4 0
3 years ago
Johns birthday party budget is 119.00. He spent 45.50 for sandwiches,26.25 for juice and,15.25 for prizes.how much money is left
Alik [6]
Simply subtract all the spent money from his budget:

$119-$45.50-$26.25-$15.25= $32

Therefore, he has $32 left for other expenses!

Hope this helps!
8 0
3 years ago
Order the numbers from least to greatest.<br> 23% , 1/4 , 0.225 .
Alla [95]
0.225, 23%, 1/4


Step my step

23% = 0.23
1/4 = 0.25
3 0
2 years ago
Consider the function f(x)= 2/5x-4
Gre4nikov [31]

Answer: a) \frac{5}{2}x+10=f^{-1}(x)=g(x)

Step-by-step explanation:

Since we have given that

f(x)=\frac{2}{5}x-4

a.) Find the inverse of f(x) and name it g(x).

Let f(x) = y

So, it becomes

y=\frac{2}{5}x-4

Switching x to y , we get

x=\frac{2}{5}y-4

5x=2y-20\\\\5x+20=2y\\\\\frac{5x+20}{2}=y\\\\\frac{5}{2}x+10=y\\\\\frac{5}{2}x+10=f^{-1}(x)=g(x)

b) . Use composition to show that f(x) and g(x) are inverses of each other.

\mathrm{For}\:f=\frac{2}{5}x-4\:\\\\\mathrm{substitute}\:x\:\mathrm{with}\:g\left(x\right)=\frac{5}{2}x+10\\\\=\frac{2}{5}\left(\frac{5}{2}x+10\right)-4\\\\=x

Similarly,

\mathrm{g\left(x\right)=\frac{5}{2}x+10,\:f\left(x\right)=\frac{2}{5}x-4,\:g\left(x\right)\circ \:f\left(x\right)}\\\\\mathrm{For}\:g=\frac{5}{2}x+10\:\mathrm{substitute}\:x\:\mathrm{with}\:f\left(x\right)=\frac{2}{5}x-4\\\\=\frac{5}{2}\left(\frac{2}{5}x-4\right)+10\\\\=x

so, both are inverses of each other.

c) Draw the graphs of f(x) and g(x) on the same coordinate plane.

As shown below in the graph , Since for inverse function we need an axis of symmetry i.e. y=x

And both f(x) and g(x) are symmetry to y=x.

∴ f(x) and g(x) are inverses of each other.


5 0
3 years ago
Round to the nearest tenth (TIMED PLEASE help!!!)
vredina [299]

Answer:

A = 180 - (90 + 72) \\  A= 18° \\  \\ from \: pythogoras \\ a = 3.4 \\ b = 10.5

4 0
3 years ago
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