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Pepsi [2]
3 years ago
15

The triangle in this question is not drawn accurately. Use Pythagoras' Theorem to explain why triangle A must be right-angled.

Mathematics
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

We know the triangle in a right triangle because of the pythagoras theorem: 5^2+12^2=13^2

25 + 144 equals 169, making it a right triangle since the equation works.

Step-by-step explanation:

I tried to explain this the best i could, hope it works :)

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How do you simplify this problem?
Yuri [45]

1+tan^2(x) = sec^2(x)

sec^2(x) = 1/cos^2(x)

csc(-x) / 1/cos^2(x) =

cos^2(x) csc(-x)

4 0
3 years ago
5. Adam drives his car with an average velocity of 85 km/h eastward. How long will it take him to drive
NISA [10]

Answer:

x = 6.59 hrs = about 6 hours, 35 minutes

Step-by-step explanation:

Adam drives at 85 km / h. Let's set up equivalent fractions to see how long if he drives 560 km.

\frac{85 km}{1  hr} = \frac{560 km}{x hr}

Cross-multiply:

85x = 560

Solve for x:

560/85 = x

<u>x = 6.59 hrs = about 6 hours, 35 minutes</u>

7 0
3 years ago
Write an equation of the line with slope -2 and passing through (3,1) in slope-intercept form
Vinvika [58]

Answer:

y=-2x+7

Step-by-step explanation:

Hi there!

The form of slope-intercept form is given as y=mx+b, where m is the slope and b is the y intercept

We are given the slope (-2) and a point (3,1)

We can immediately substitute -2 as the slope in the equation

y=-2x+b

Now we need to find b

Because the line will pass through the point (3,1), we can use it to solve for b

Substitute 3 as x and 1 as y

1=-2(3)+b

multiply

1=-6+b

add 6 to both sides to isolate b

7=b

Substitute 7 as b into the equation

The line is <u>y=-2x+7</u>

Hope this helps!

8 0
3 years ago
7 copies of the sum of 8 fifths and 4
Serggg [28]
So what you would do is 8/5 + 4 x 7 = 26.9
then you round it to 30
7 0
3 years ago
PLEASE HELP!! EASY MATH FOR ADULTS NOT MIDDLE SCHOOLERS HELP PLS!
ale4655 [162]

Answer:

B. 0.5 and 0.2

C 2 and 3.2

Step-by-step explanation:

because anything lesser than the standard value of one is smaller.

because anything over the standard value of one is larger.

3 0
3 years ago
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