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Svetllana [295]
2 years ago
11

please help! i'll mark brainliest if correct! Use the second image attached to answer the question! HELP ASAP

Mathematics
1 answer:
Jobisdone [24]2 years ago
6 0
The right answer is c have a nice day
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Farmer John can plant 3/8 of row of crops in 1/8 of his regular work day. If Farmer John works for 8 hours a day. How many days
faust18 [17]
Your answer will be 12 since 8/8 is one whole and you need 12 so your answer is 12
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PLEASE HELP ME ASAP!!!!! (Find the surface area of the prism)
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I believe it is 672m
7 0
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Read 2 more answers
Given: △ABC, m∠A=60° m∠C=45°, AB=8 Find: Perimeter of △ABC, Area of △ABC . FIRST CORRECT ANSWER GETS POINTS AND BRAINLIEST!!!! T
Ad libitum [116K]

Answer:

Given : In △ABC, m∠A=60°, m∠C=45°,and AB=8 unit

Firstly, find the angles B

Sum of measures of the three angles of any triangle equal to the straight angle, and also expressed as 180 degree

∴m∠A+ m∠B+m∠C=180                      ......[1]

Substitute the values of m∠A=60° and m∠C=45° in [1]

60^{\circ}+ m\angle B+45^{\circ}=180^{\circ}

105^{\circ}+ m\angle B=180^{\circ}

Simplify:

m\angle B=75^{\circ}

Now, find the sides of BC

For this, we can use law of sines,

Law of sine rule is an equation relating the lengths of the sides of a triangle  to the sines of its angles.

\frac{\sin A}{BC} = \frac{\sin C}{AB}

Substitute the values of ∠A=60°, ∠C=45°,and AB=8 unit to find BC.

\frac{\sin 60^{\circ}}{BC} =\frac{\sin 45^{\circ}}{8}

then,

BC = 8 \cdot \frac{\sin 60^{\circ}}{\sin 45^{\circ}}

BC=8 \cdot \frac{0.866025405}{0.707106781} =9.798 unit

Similarly for  AC:

\frac{\sin B}{AC} = \frac{\sin C}{AB}

Substitute the values of ∠B=75°, ∠C=45°,and AB=8 unit to find AC.

\frac{\sin 75^{\circ}}{AC} =\frac{\sin 45^{\circ}}{8}

then,

AC = 8 \cdot \frac{\sin 75^{\circ}}{\sin 45^{\circ}}

AC=8 \cdot \frac{0.96592582628}{0.707106781} =10.9283 unit

To find the perimeter of triangle ABC;

Perimeter = Sum of the sides of a triangle

i,e

Perimeter of △ABC = AB+BC+AC = 8 +9.798+10.9283 = 28.726 unit.

To find the area(A) of triangle ABC ;

Use the formula:

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

Substitute the values in above formula to get area;

A=\frac{1}{2} \times 8 \times 10.9283 \times \sin 60^{\circ}

A = 4 \times 10.9283 \times 0.86602540378

Simplify:

Area of triangle ABC = 37.856 (approx) square unit





4 0
3 years ago
Help me for 8 and 9?????
Digiron [165]
8. In A, because those trees are in the deciduous.
9. All of these forests contains life and lot and lots of trees.

Hope this helps!
3 0
3 years ago
What the answer fast pls
Marrrta [24]

Answer:

x= 20 and y= 12

Step-by-step explanation:

nickel is 5 cents and quarter is 25 cents,

let x be number of nickels and y be number of cents

x+y = 32

5x + 25y = 400

you get x= 20 and y= 12

7 0
2 years ago
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