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2 years ago

Please help me with these three questions! They are quick and easy. I will mark brainiest!

Mathematics

1 answer:

natta225 [31]2 years ago

6 0

Answer:

i don't know a counterexample for the first one

A counterexample for the second one is a leaf bug

A counterexample for the third one is a trapezoid, rectangle, rhombus

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Given triangle JKL find m

timama [110]

I would set all 3 given measures equal to 180.
13x-9+4x+11+2x+7 = 180
19x +9 = 180
19x = 171
x= 9

angle l = 4 (9) + 11= 47
answer = 47

3 0

2 years ago

The components of vector are ax and ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Fi

Andru [333]

we can use formula

$\theta=tan^{-1}(\frac{a_y}{a_x})$

(a)

we are given

$a_x=12,a_y=12$

now, we can plug values

$\theta=tan^{-1}(\frac{12}{12})$

$\theta=tan^{-1}(1)$

$\theta=\frac{\pi}{4}rad$

(b)

we are given

$a_x=20,a_y=12$

now, we can plug values

$\theta=tan^{-1}(\frac{12}{20})$

$\theta=tan^{-1}(\frac{3}{5})$

$\theta=30.96^{\circ \:}$

(c)

we are given

$a_x=12,a_y=20$

now, we can plug values

$\theta=tan^{-1}(\frac{20}{12})$

$\theta=tan^{-1}(\frac{5}{3})$

$\theta=59.03^{\circ \:}$

6 0

2 years ago

In the same amount of time, James drove twice as far as Roger. Altogether, James and Roger drove 90km. Find the number of kilome

miskamm [114]

Answer:

james drove 60 and roger drove 30

Step-by-step explanation:

90/3= 30= roger

90/3=30x2=60= james

james(60)+roger(30)= 90

8 0

2 years ago

What is the circumference of this circle given a radius of 7 in.?

EastWind [94]

Hope this will help u...

7 0

3 years ago

Read 2 more answers

How many cans of paint are needed to cover an area of 2200 square units if one can of paint covers in area 400 square units

sergij07 [2.7K]

Answer:

Step-by-step explanation:

You have a total area of 2,200 sq units to cover... and each can of paint covers 400 sq units. So, you'll need:

2200 sq units / 400 sq units/can = 5.5 cans

In such problems, we always round up, since you will need 5 full cans of paint, and half of a 6th can.

So, in total you will need 6 cans of paint to cover all 2,200 sq units.

5 0

3 years ago