Answer:
Here make sure give me a heart and 5 stars
Step-by-step explanation:
A die is rolled twice.
1 answer:
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Answer:
A
Step-by-step explanation:
Given 2 sides and the included angle use the Cosine rule to solve for x
x² = 1.6² + 1.1² - (2 × 1.6 × 1.1 × cos78° )
= 2.56 + 1.21 - ( 3.52 × cos78° )
= 3.77 - 0.7318
= 3.0382
Take the square root of both sides
x = = 1.7 → A
Please check attached file to see if you mean the same triangle.
Basically, to find the area of a triangle, you are going to use the formula :
A = b × h where b is base, h is height.
2
others also use the formula: <span> Area=1/2(bxh)</span>
Based on the figure, we have 6.9 cm (base) and 4 cm (height) as given.
Let us work out on the area of the said triangle.
A= <u>6.9cm × 4cm</u>
2
= <u>27.6cm</u>²<u>
</u> 2
A= 13.8 cm²
Hope this helps!
Basically, to find the area of a triangle, you are going to use the formula :
A = b × h where b is base, h is height.
2
others also use the formula: <span> Area=1/2(bxh)</span>
Based on the figure, we have 6.9 cm (base) and 4 cm (height) as given.
Let us work out on the area of the said triangle.
A= <u>6.9cm × 4cm</u>
2
= <u>27.6cm</u>²<u>
</u> 2
A= 13.8 cm²
Hope this helps!
Answer:
The speed driven while returning is 88 mph.
Step-by-step explanation:
We are given that while traveling to and from a certain destination, you realized increasing your speed by 40 mph saved 4 hours on your return.
Also, the total distance of the roundtrip was 420 miles.
Let the speed driven while returning be 'x mph' which means that the speed driven while going was '(x - 40) mph' because it has been given that while returning we have increased the speed by 40 mph.
As we know that the Speed-Distance-Time formula is given by;
or
So, according to the question;
where Distance = 420 miles
Now finding the roots of the above equation;
Here a = 1, b = -40 and c = -4200
= = 18400
Now, the roots of a quadratic equation is given by;
So, the two roots of x are : and
Solving these two we get; and
Here we ignore the negative value of x, so the speed driven while returning is 87.8 ≈ 88 mph.