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3 years ago

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Need help quick and fast!

1 answer:

scZoUnD [109]3 years ago

7 0

Answer:

Commutative= 3x2=2x3

Associative Multiplication= 2x(6x8)=(2x6)x8

Distributive= 5(7+2)=5x7+5x2

Associative Addition=(2+5)+4=2+(5+4)

Step-by-step explanation:

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Coefficient of Performance

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the height decreases

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3 years ago

Given: △ABC, m∠A=60° m∠C=45°, AB=8 Find: Perimeter of △ABC, Area of △ABC

jarptica [38.1K]

We are given

△ABC, m∠A=60° m∠C=45°, AB=8

Firstly, we will find all angles and sides

Calculation of angle B:

we know that sum of all angles is 180

m∠A+ m∠B+m∠C=180

we can plug values

60°+ m∠B+45°=180

m∠B=75°

Calculation of BC:

we can use law of sines

$\frac{AB}{sin(C)}=\frac{BC}{sin(A)}$

now, we can plug values

$\frac{8}{sin(45)}=\frac{BC}{sin(60)}$

$BC=\frac{8}{sin(45)} \times sin(60)$

$BC=9.798$

Calculation of AC:

$\frac{AB}{sin(C)}=\frac{AC}{sin(B)}$

now, we can plug values

$\frac{8}{sin(45)}=\frac{AC}{sin(75)}$

$AC=\frac{8}{sin(45)} \times sin(75)$

$AC=10.928$

Perimeter:

$p=AB+BC+AC$

we can plug values

$p=10.928+8+9.798$

$p=28.726$

Area:

we can use formula

$A=\frac{1}{2}AB \times AC \times sin(A)$

now, we can plug values

$A=\frac{1}{2}8 \times 10.928 \times sin(60)$

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4 years ago

Read 2 more answers

What is 2/5-3/10 equal to

Ilia_Sergeevich [38]

Answer:

1/10

Step-by-step explanation:

2/5=4/10

4/10-3/10=1/10

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3 years ago

Find m<1 in the rhombus below

Margarita [4]

Answer:

$m \angle \: 1 = 120 \degree$

Step-by-step explanation:

Given figure is of a rhombus.

Measures of the opposite angles of a rhombus are equal.

Therefore,

$m \angle \: 1 = 120 \degree$

6 0

3 years ago