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3 years ago

25 points!!!!!!!!

Mathematics

1 answer:

podryga [215]3 years ago

8 0

Answer:

A is your answer, my guy

Step-by-step explanation:

4x1=4

3x-1=-3

5x1=5

4+(-3)+5=6

6x1=6

8x-1=-8

6x1=6

6+(-8)+6=4

4x1=4

2x-1=-2

6x1=6

4+(-2)+6=8

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Solve the equation to get x

Mariulka [41]

Answer:

the answer is

Step-by-step explanation:

x=1/2y+5---i

4x+3y=-20 ----ii

putting value of x in eqn Ii

4×(1/2×y+5)+3y=-20

2y+5+3y=-20

5y+5=-20

5y=-20-5

5y=-25

y=-25/5

y=-5

putting value in eqn I

x=1/2×-5+5

x=-5/2+5

x=5/2

4 0

2 years ago

The graph below shows the

kirza4 [7]

Answer:

649264637

Step-by-step explanation:

ayan sagut po yan

5 0

4 years ago

If the value of y varies directly with x and y=-1 when x=3, find y if x=9

steposvetlana [31]

1.If y varies directly with x

Introduce the constant term k

2.y=kx

where k is the constant term

substitute the value of x and y to form the law

-1=3k

k=-1\3

:y=-1\3x....is the law

To find the value of y when x is 9

Reinstate the law which is y=-1\3x and substitute the value of x to find y

y=-1\3*9

y=-3

4 0

3 years ago

Base of triangle exceeds the height by 4. If the area is 178.5 square inches, find the length of the base and the height of the

xxMikexx [17]

Area of a triangle:
A= (1/2)(bh)

In this problem we are given:
A= 178.5 $in^{2}$
b= h+4 in
h= UNKNOWN ("h")

Plug in our values into the area equation and solve for "h":
$A= \frac{1}{2} bh$
$178.5 = \frac{1}{2} ((h+4)h)$ (multiply each side by 2 to get rid of the 1/2)
$357 = ((h+4)h)$
$357 = h^{2} +4h$
$0= h^{2} +4h -357$
(357/21=17)
$0= (h+21)(h-17)$ (solve both inequalities separately)

$0= (h+21)$
$-21= h$ ( a negative height is not possible so, this answer is incorrect.)

$0=(h-17)$
$h=17 in$

Answer: base = (h+4)= (17+ 4) b= 21 in h= 17in

Please comment with any further questions! :)

5 0

3 years ago

Plllssss help me its the last one

DerKrebs [107]

Well I think step 1 is wrong she is suppossed to add 32.75 +32.75 then add she would have 65.50 after she would have to add 70.99 her results form that would be 136.49 after she would need to subtract 12.25 then she ends up with 124.24 and 1/4 of that is 31.06 therefore what she put in her savings was 31.06 I hope this helps!

3 0

4 years ago