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pshichka [43]
3 years ago
12

Someone please help me

Mathematics
1 answer:
True [87]3 years ago
3 0

Answer: 20 = right triangle 21 = acute 22 = obtuse

Step-by-step explanation:

20 - Because there is a right angle/ 90 degree angle

21 - Because all the angles are less that 90 degrees which makes them acute.

22 - Because all the angles are more than 90 which makes them obtuse.

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If (2x − 4)(3x + 2) = 0, what are all possible values of x ?
EleoNora [17]
I am doing it right now
7 0
4 years ago
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Tyler filled up his hot tub, which is a right rectangular prism, with 480 cubic feet of water. The hot tub is 12 feet long and 1
Novosadov [1.4K]

Answer:

volume for a rectangular prism is length*width*height

480 = l * w * h (the volume equal to the equation. plug in values you know)

480 = 12 * 10 * h (multiply the right side)

480 = 120h (divide both sides by 120 to isolate the height)

height = 4 feet

height of the bathtub and depth are the same thing, so your answer is 4 feet

Step-by-step explanation:

I hope this helps :))

4 0
3 years ago
Determine the projection of vector w onto vector u. u=9i-6j, v=-3i-2j, w=19i+15j
Naily [24]

Answer:

proj_uw=6.2i-4.2j

Step-by-step explanation:

The projection of a vector v onto a vector u is defined as the projection of the vector v on the line that contains the vector u. It can be calculated  using the following formula:

proj_uv=\frac{u\cdot v}{||u||^2} u

Where:

u\cdot v

Is the dot product between u and v which is given by:

u\cdot v= $$\sum_{i=1}^{n} u_iv_i= u_1v_1+u_2v_2+...+u_nv_n$$

and:

||u||

Is the magnitude of vector which can be calculated as follows:

||u||=\sqrt{u_1^2+u_2^2+...+u_n^2}

In this sense, the projection of vector w onto vector u is:

proj_uw=\frac{u\cdot w}{||u||^2} u

Where the dot product between u and w is:

u\cdot w =(9*19)+(-6*15)=171-90=81

And the magnitude of u is:

||u||=\sqrt{9^2+(-6)^2} = 3 \sqrt{13}

Thus:

proj_uw=\frac{u\cdot w}{||u||^2} u=\frac{81}{117} \langle9,-6\rangle=\langle6.23,-4.15\rangle\approx6.2i-4.2j

8 0
3 years ago
Matt and Mandy are partners in a taco truck. The partnership is in the ratio of 2:4
julia-pushkina [17]

Answer:

$37,600

Step-by-step explanation:

2:4 ratio which means there is 6 parts

56,400/6 = 9,400

Mandy is the 4 as she came second in the question which said respectfully(in that order)

9,400 x 4 = $37,600

Though in all honesty I may be wrong, I haven't worked on any ratios in a longggg time

8 0
3 years ago
What is bigger .57% or 1
Verdich [7]
It is 1 because 57% isnt larger than 1


4 0
3 years ago
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