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3 years ago

Does anyone know this :/ ?

Mathematics

2 answers:

choli [55]3 years ago

7 0

Angles 7, 6, 3, 2 are all vertical angles, which mean they are congruent (equal)

so if angle 7 is 115° so are 6, 3, and 2

so the measure of angle 2 is 115°

sweet-ann [11.9K]3 years ago

7 0

Answer:

Angle 2 would also be 115 degrees

Step-by-step explanation:

Angle 7 and angle 6 are vertical angles, which makes them congruent. Angle 6 is congruent to angle 2 because they are corresponding angles.

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Jenna+has+five+less+stamps+than+horacio.+gary+has+half+the+number+that+horacio+had.+all+together+they+have+a+total+of+75+stamps

nexus9112 [7]

Haracio has 32 stamps. Jenna has 27 stamps. Gary has 16. You can solve this using matrices.

4 0

2 years ago

4x+3y=20<br> 2x+y=7<br> How do I solve this? I forgot how to do it :/ also no answer choice

Crank

So for this, I will be using the substitution method. Firstly, subtract both sides in the second equation by 2x: $4x+3y=20\\ y=7-2x$

Next, substitute y in the first equation with 7-2x, then solve for x from there:

$4x+3(7-2x)=20\\ 4x+21-6x=20\\ -2x+21=20\\ -2x=-1\\ x=\frac{1}{2}$

Now that we got x, substitute it into either equation to solve for y:

$4*\frac{1}{2}+3y=20\\ 2+3y=20\\ 3y=18\\ y=6\\ \\ 2*\frac{1}{2}+y=7\\ 1+y=7\\ y=6$

In short, x = 1/2 and y = 6.

6 0

3 years ago

Find a unit vector in the direction of the vector left bracket Start 3 By 1 Matrix 1st Row 1st Column negative 8 2nd Row 1st Col

MrRissso [65]

Answer:

$\left[\begin{array}{c}-\frac{8}{\sqrt{117} } \\\frac{7}{\sqrt{117} }\\\frac{2}{\sqrt{117} }\end{array}\right]$

Step-by-step explanation:

We are required to find a unit vector in the direction of:

$\left[\begin{array}{c}-8\\7\\2\end{array}\right]$

Unit Vector, $\hat{a}=\dfrac{\overrightarrow{a}}{|\overrightarrow{a}|}$

The Modulus of $\overrightarrow{a}$ = $\sqrt{(-8)^2+7^2+(-2)^2}=\sqrt{117}$

Therefore, the unit vector of the matrix is given as:

$\left[\begin{array}{c}-\frac{8}{\sqrt{117} } \\\frac{7}{\sqrt{117} }\\\frac{2}{\sqrt{117} }\end{array}\right]$

5 0

3 years ago

I NEED HELP PLZ I WILL GIVE THANKS AND BRAINLIST

strojnjashka [21]

Answer:

The answer is D

Step-by-step explanation:

D is the point where the two lines intersect and therefore it is the solution of the line

7 0

3 years ago

Murat has 2/3 kg of rice that he wants to put into bags that contain 3/10 kg of rice each?

Bad White [126]

Answer:

Murat can fill 6/13 kg of rice

Step-by-step explanation:

because it has 2/3 kg of rice and 3/10 each and I added 6+2 and 3+10 hope it makes your day

8 0

2 years ago

Read 2 more answers