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3 years ago

I need help plz !!!!!!!!!!!!!

Mathematics

1 answer:

Mumz [18]3 years ago

3 0

Angle A is 73 degrees.

This can be found by using the values for both angles and setting them equal to 180. Since they are alternating interior angles of intersections of parallel lines, they must equal 180.

6x - 35 + 3x + 53 = 180
9x + 18 = 180
9x = 162
x = 18

Since x = 18 we can place that into the equation for angle A in order to find it's value alone.

6x - 35
6(18) - 35
108 - 35
73

You might be interested in

vera has two loans total 9000$. One loan is at 5%simple interest and the other one is at 6% interest at the end of the year vera

Bingel [31]

Eg. the first loan is x, the second loan will be (9,000 - x)

First, we need to make an equation based on the problem
first interest + second interest = 492
5% of x + 6% of (9,000 - x) = 492
<em>This is the equation</em>

Second, solve the equation and find out the value of x (first loan)
0.05x + 0.06(9.000 - x) = 492
0.05x + 540 - 0.06x = 492
-0.01x + 540 = 492
-0.01x = 492 - 540
-0.01x = -48
x = -48/-0.01
x = 4,800

Third, find the second loan
9,000 - x
= 9,000 - 4,800
= 4,200

SUMMARY
The first loan that has interest of 5% is $4,800
The second loan that has interest of 6% is $4,200

6 0

3 years ago

How to do it solve for y

Goryan [66]

Answer:

y=1

Step-by-step explanation:

1. Isolate the variable

1+2y=3

-1 -1

2y=2

__ _

2 2

y=1

6 0

3 years ago

Read 2 more answers

A)Work out an estimate for the mean time it took the students.Round your answer to 2 significant figures.

Savatey [412]

B is the correct answer

7 0

3 years ago

g 5. (5 points) Next, let’s turn our attention to the vector space P2, which is the set of polynomial with degree at most 2, tog

almond37 [142]

Answer:

No, those vectors do not span P₂

Step-by-step explanation:

At first, notice we have 4 vectors from a vector space of dimension 3 ({1,x,x²} is the standard base of P₂) so we are sure they are linearly dependent (because there are more than 3 vectors) i.e. it´s possible to write one of them in terms of other in the same set:

p4=p1-p2

$(2x^{2} -x+1) - (x+3) = 2x^{2}-2x-2$

Now, we conclude the span {p1,p2,p3,p4} = {p1,p2,p3}

If we want to know the subspace that this span gets, we work with the matrix of the vectors made as follows:

$A=\left[\begin{array}{ccc}1&3&5\\-1&1&-1\\2&0&4\end{array}\right]$

The row-reduction of this matrix show us the basis of the same row-subspace even in the case that some of them are linearly dependent:

$A\ is\ row--equivalent\ to:\left[\begin{array}{ccc}1&0&\frac{1}{2}\\0&1&-\frac{3}{2}}\\0&0&0\end{array}\right]$

This shows that the span {p1,p2,p3}={(1+0.5x²),(x-1.5x²)}

Looking in the previous equality, the span {p1,p2,p3} is generated by two linearly independent vectors, but P₂ needs 3 linearly independent vectors to be generated.

The answer is that {p1,p2,p3,p4}⊂P₂.

4 0

4 years ago

What's the answer and how do you solve it

ivolga24 [154]

<span>-5 + [2 - (4 * (-3) + 6)] / 2

First off, we must remember PEMDAS or </span>
"Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction"

So we start with parentheses first.
But for the problem (4 * (-3) + 6) , there is two answers depending on which way you solve it! So what do you do? Remember in math, it is always left to right.
so- (4 * (-3) + 6) = (-12 + 6) = -6.
Now the equation looks like this: -5 + [2 - (-6)] / 2

2 - (-6) = 8

Now the equation looks like this: -5 + (8) / 2
Going left to right we can finally solve.
-5 + 8 = 3

3/2 = 1.5

Answer is 1.5!

8 0

4 years ago