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3 years ago

Solve for the missing variable :> thank you

Mathematics

1 answer:

Korvikt [17]3 years ago

6 0

1. 3x+16 = 5x-54

-3x -3x

16=2x-54

+54 +54

70 = 2x

35=x

2. 4x-10 = 58

+10 +10

4x = 68

x=17

3. 2x+43 = 2x-3

x=0

no solution

4. x+16 = 4x-5

-x -x

16=3x-5

+5 +5

21=3x

x=7

5. 11y-36 = 63

+36 +36

11y=99

y=9

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12/19*.............................= -12/19

melamori03 [73]

Answer:

$\frac{12}{19} \times \underline{\bold{-1}} = -\frac{12}{19}$

Step-by-step explanation:

$\frac{12}{19} \times ..... = -\frac{12}{19}$

= $\frac{\frac{12}{19}}{-\frac{12}{19}}$

= $\frac{12}{19} \times -\frac{19}{12}$

= $-\frac{228}{228}$

= $\bold{-1}$

So, the appropriate value to complete it is -1

#CMIIW ^^

3 0

4 years ago

Eight less than a number divided by seven equals 2

madreJ [45]

Answer:

x=12

Step-by-step explanation:

（X-8)/7=2

X-8=14

X=22

7 0

3 years ago

Determine which answer choice matches the dot plot you drew?

Vesnalui [34]

Answer:

Step-by-step explanation:

Given data are :

{1,2,2,2,2,4,4,5,6,6,8,8,8,10}

1 appears only once so there will be 1 point above number 1 in the dot plot.

Then choice B or C or D are possible choices.

2 appears 4 times so there will be 4 points above number 4 in the dot plot.

Then choice B or C or D are possible choices.

4 appears 2 times so there will be 2 points above number 2 in the dot plot.

Then choice C or D are possible choices.

5 appears once once so there will be 1 point above number 5 in the dot plot.

Only choice that satisfies those results is C.

Hence correct answer is C.

7 0

3 years ago

What should be the three sides of a triangle to make it right triangle?

drek231 [11]

Sum of square of two sides must be equal to the square of third side.

5 0

3 years ago

A rectangle has a length that is 9 feet less than four times its width. Its area is 90 square feet

kramer

Answer:

The length of rectangle is $15\ ft$

The width of rectangle is $6\ ft$

Step-by-step explanation:

Let

x-----> the length of rectangle

y----> the width of rectangle

we know that

The area of rectangle is equal to

$A=xy$

$A=90\ ft^{2}$

$90=xy$ -----> equation A

$x=4y-9$ -----> equation B

substitute equation B in equation A and solve for y

$90=(4y-9)y$

$4y^{2}-9y-90=0$

using a graphing calculator

The solution is

$y=6\ ft$

Find the value of x

$x=4y-9$ -----> $x=4(6)-9=15\ ft$

5 0

3 years ago

Solve for the missing variable :> thank you​

Solve for the missing variable :> thank you