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mrs_skeptik [129]
1 year ago
11

Calculate the areas of these shapes. Show your work.

Mathematics
2 answers:
Vanyuwa [196]1 year ago
6 0
Triangle:half of base x height which is 10
Parallelogram: base x height which is 54
Trapezoid: half of base1 + base2 x height which is 17.25
Irina18 [472]1 year ago
3 0
The area of a triangle is b + h divided by 2.
5 is the base 4 is the height so, 4x5=20 and 20/2 =10
so 10 is the answer.
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If 3/4 of a certain number is equal to 41/2 find the number​
SSSSS [86.1K]

Answer:

x = \frac{82}{3}

Step-by-step explanation:

  • let x be that number

(\frac{3}{4} )x =  \frac{41}{2}

\frac{3x}{4} = \frac{41}{2}

  • multiply both sides by 4

\frac{3x}{4} * 4 = 4 * \frac{41}{2} \\3x = \frac{41 }{2} * 2 * 2\\3x = 41 *2 \\3x = 82 \\

  • divide both sides by 3

\frac{3x}{3} = \frac{82}{3}

x = \frac{82}{3}

7 0
3 years ago
A right triangle has legs of length 4x and 20x. What is an expression for the hypotenuse of the right triangle
kherson [118]

Answer:

4x\sqrt{26}.

Step-by-step explanation:

Given information:

Leg_1=4x

Leg_2=20x

According to the Pythagoras theorem,

(hypotenuse)^2=(Leg_1)^2+(leg_2)^2

Using Pythagoras theorem, we get

(hypotenuse)^2=(4x)^2+(20x)^2

(hypotenuse)^2=16x^2+400x^2

(hypotenuse)^2=416x^2

Taking square root on both sides.

hypotenuse=\sqrt{416x^2}

hypotenuse=4x\sqrt{26}

Hence, the expression of the hypotenuse is 4x\sqrt{26}.

5 0
3 years ago
Not quite sure how to work this out
Zina [86]
you have the hypotenuse and the opposite side so you will use sin
sin58= (30/q)
multiply both sides by q
q(sin58)=30
divide by sin58 in your calculatior
q=(30/sin58)
^ I don't have a calculator with me so you will need to plug that in
5 0
2 years ago
I am confused help??
PtichkaEL [24]

Answer:

48

Step-by-step explanation:

2 x 2 x 2 x 2 = 16

16 + ?

4 x 4 x 4 = 64

0.5 x 64 = 32

32 + 16 = 48

5 0
2 years ago
Read 2 more answers
Adam exchanged British pounds for Swiss franc He changed £400 into 592 francs What was the exchange rate of British pounds to Sw
OLEGan [10]

Answer: 1 : 1.48

Step-by-step explanation:

Adam was able to change £400 into 592 francs which means that the British pound is stronger because it was able to buy more Swiss francs.

The exchange rate can be gotten using direct proportion:

400 : 592

1       : x

Cross multiply:

400x = 592

x = 592/400

x = 1.48

Exchange rate is:

= 1 : 1.48

5 0
3 years ago
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