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3 years ago

Can some one help me on this math question its confusing ill give brainly when right!!!

Mathematics

2 answers:

allsm [11]3 years ago

8 0

Answer:

Step-by-step explanation:

Coefficients: -2, 3, 5

cluponka [151]3 years ago

6 0

answer is( ab)

Step-by-step explanation:

here is your answer

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Does anyone know this?

Luda [366]

Answer:

nah 1

Step-by-step explanation:

sorry homie later

7 0

4 years ago

Fernando invested money in a 4-yr CD (certificate of deposit) that returned the equivalent of 5.2% simple interest. He invested

Andrew [12]

Answer: $5000; $2000

Step-by-step explanation:

Simolw interest is calculated as: PRT/100

where,

P = principal

R = rate

T = time

Let the money in the 4-yr cd be represented by y.

Since rate = 5.2%

Simple interest = (y × 5.2 × 4)/100

Since he invested $3000 less in a 18-month CD, Let the money in the 18-month CD be represented by (y - $3000).

Then, S.I = [(y - $3000) × 3 × 1.5]/100

The total interest = $1130

We then equate the two simple interest together. This will be:

= (y × 5.2 × 4)/100 + (y - $3000) × 3 × 1.5]/100 = $1130

0.208y + 0.045(y - $3000) = $1130

0.208y + 0.045y - $135 = $1130

0.253y = $1130 + $135

0.253y = $1265

y = $1265/0.253

y = $5000

The money invested in 4-yr CD = $5000

The money invested in the 18-month CD = $5000 - $3000 = $2000

8 0

3 years ago

System of equations ( substitution methods) can someone solve these problems x=3y-5 ; x+y=3 y=x ; 3x+3y=18 y=3x+4 ; 5x-y=0

Tasya [4]

Answer:

(1,2)

(3,3)

(-1/2, 11/2)

Step-by-step explanation:

A system of equations is 2 or more equations for which the same x,y solution exists. We can solve the system in three ways: elimination, substitution, or graphing. Substitution can be used by substituting the value of one variable into the equation.

Pair x=3y-5 and x+y=3

Because x=3y-5, we can substitute 3y-5 into x in x+y=3

x+y=3

(3y-5)+y=3

3y-5+y=3

4y-5=3

4y-5+5=3+5

4y=8

y=2

We now substitute y=2 into x=3y-5.

x=3y-5

x=3(2)-5

x=6-5

x=1

Pair y=x and 3x+3y=18

Because y=x, we can substitute x into y in 3x+3y=18

3x+3y=18

3x+3x=18

6x=18

x=3

We now substitute x=3 into y=x.

y=3.

Pair y=-3x+4 and 5x-y=0

Because y=-3x+4, we can substitute -3x+4 into y in 5x-y=0

5x-y=0

5x-(-3x+4)=0

5x+3x+4=0

8x+4=0

8x=-4

x=-1/2

We now substitute x=-1/2 into y=-3x+4

y=-3x+4

y=-3(-1/2)+4

y=3/2+4

y=11/2

4 0

3 years ago

What is at the end of a rainbow? Unscramble the answer to this riddle and explain below. EHT RTTLEE W

icang [17]

Answer:

The Letter W

Step-by-step explanation:

EHT- The

RTTLEE- Letter

W- W

W is at the end of a rainbow.

8 0

4 years ago

T(v) = Av represents the linear transformation T. Find a basis for the kernel of T and the range of T.

lawyer [7]

Answer:

Ker(T) has basis $\emptyset$

Range(T) has basis $\left\{\left(\begin{array}{c}2&3\end{array}\right), \left(\begin{array}{c}1&4\end{array}\right) \right\}.$

Step-by-step explanation:

If the matrix you wanted to represent is $A=\left(\begin{array}{cc}2&1\\3&4\end{array}\right)$ , then:

$ker(T)=\left\{{\bf x}\in \mathbb{R}^{2}: A{\bf x}=0\right\}$ .

So, to find ker(T) you must solve the homogenous equation

$A{\bf x}=\left(\begin{array}{cc}2&1\\3&4\end{array}\right) \left(\begin{array}{c} x&y \end{array}\right)=\left(\begin{array}{c}0&0\end{array}\right)$

Using Gauss elimination we obtain the simpler equivalent system

$\left(\begin{array}{cc} -6&3\\0&5\end{array}\right) \left(\begin{array}{c} x&y\end{array}\right)=\left(\begin{array}{c}0&0\end{array}\right)$

Then, we have that

$x=0,y=0$ .

We have that $ker(T)=\{\left(\begin{array}{c}0&0\end{array}\right)\}$ . On this case we say that the basis is the empty set $\emptyset$ .

The range of $T$ is the set of vectors of the form

$\left(\begin{array}{c} \alpha &\beta\end{array}\right)=\left(\begin{array}{cc}2&1\\3&4\end{array}\right)\left(\begin{array}{c}x&y\end{array}\right)=x\left(\begin{array}{c}2&3\end{array}\right)+y\left(\begin{array}{c}1&4\end{array}\right)$

So,

$Range(T)=\langle \left(\begin{array}{c}2&3\end{array}\right), \left(\begin{array}{c}1&4\end{array}\right) \rangle.$ Where the angle brakets denotes the span.

5 0

3 years ago