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STatiana [176]
3 years ago
10

PLEASE HELP ME, and explain it please please please <3

Mathematics
1 answer:
ser-zykov [4K]3 years ago
7 0
The answer would be f(x)= x+47
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Please help explanation if possible
egoroff_w [7]

Answer: x = 2 and y = -4

x + 2y = -6

x = -6-2y

Putting this in value of x in

6x + 2y = 4

6(-6-2y) + 2y = 4

-36-12y+2y = 4

-10y = 4+36

y = 40/(-10)

y = -4

Now putting this value of y in

x + 2y = -6

x + 2(-4) = -6

x -8 = -6

x = -6+8

x = 2

Therefore x = 2 and y = -4

If we put these values we can check this

x + 2y = -6

2 + 2(-4) = -6

2 -8 = -6

-6 = -6

please click thanks and mark brainliest if you like :)

7 0
2 years ago
Read 2 more answers
How to say 6.324 in word form
Mandarinka [93]

six point three hundred and twenty four

3 0
3 years ago
Match the cofactors to their corresponding entries in the matrix.
Masja [62]

Answer:

The co-factors and their values are shown in the table below.

Step-by-step explanation:

We are given the matrix, \begin{bmatrix}3&7&1\\7&1&-3\\8&5&1\end{bmatrix}.

It is required to match the co-factors with the corresponding values.

As, the co-factors are given by,

A_{c_{ij}} = (-1)^{i+j}(d), where the d= determinant of the matrix after removing the i- row and j- column.

So, we have,

1. A_{c_{11}}.

So, A_{c_{11}}=(-1)^{1+1}(1\times 1-5\times (-3))

i.e. A_{c_{11}}=(-1)^{2}(1+15)=16

2. A_{c_{13}}.

So, A_{c_{13}}=(-1)^{1+3}(7\times 5-1\times 8)

i.e. A_{c_{13}}=(-1)^{4}(35-8)=27

3. A_{c_{21}}.

So, A_{c_{21}}=(-1)^{2+1}(7\times 1-5\times 1)

i.e. A_{c_{21}}=(-1)^{3}(7-5)=-2

4. A_{c_{22}}.

So, A_{c_{22}}=(-1)^{2+2}(3\times 1-8\times 1)

i.e. A_{c_{22}}=(-1)^{4}(3-8)=-5

5. A_{c_{31}}.

So, A_{c_{31}}=(-1)^{3+1}(7\times (-3)-1\times 1)

i.e. A_{c_{31}}=(-1)^{4}(-21-1)=-22

Thus, we get,

Co-factor                 Value

A_{c_{11}}                              16

A_{c_{13}}                             27

A_{c_{21}}                             -2

A_{c_{22}}                            -5

A_{c_{31}}                           -22

4 0
3 years ago
I need help with these
3241004551 [841]

1. a= 60 (vertically opposite angles)

b= 360-(60+60)=240/2= 120 (angles at a point)

c= 120 (vertically opposite angles with b)

2. c= 90-40= 50 (vertically opposite angles)

b=a=360-90-90=180/2=90 (angles at a point)

3. a= 180-52-51= 77 (angles on a straight line)

b=52 (angles at a point)

d=51 (angles at a point)

c=77 (angles at a point)

4. a= 60 (vertically opposite angles)

b= 360-(60+60)=240/2= 120 (angles at a point)

c= 120 (vertically opposite angles with b)

e=65

d=f= 360-65-65=230/2=115

h=55

i=g=360-55-55=250/2=125

5. b=163

a=90

e=70

d=360-70-70=220/2=110

c=360-163-163=34/2=17

Hope this helps!

4 0
3 years ago
Mr.Shand had $50 in his wallet on Friday after school.That night,He spent $11.50 on a pizza $3.75 on ice cream.One his way home,
nata0808 [166]

Answer:

39.75

Step-by-step explanation:

so first we do 50-11.50-3.75+5. to simplify it 55-15.25

if u do the math that equals 39.75

to double check 39.75+15.25=55

4 0
3 years ago
Read 2 more answers
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