2.
If 2x - 7 = 19, then x =

Answer:140

Step-by-step explanation:

70 percent (calculated percentage %) of what number equals 98? Answer: 140.

140=98/0.7

doing 98 divided by 0.7 tells you the opposite if your trying to find 70% of 98

Answer:

4

Step-by-step explanation:

40/10=4

Answer: 4

Step-by-step explanation:

40/10=4

Answer:

I think it might be 24.5

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Answer:

x= 17

Step-by-step explanation:

Use the Pythagorean Theorem

1. 25^= (x+7)^2+7^2

2. 625= (x+7)^2+ 49

3. 576= (x+7)^2

4. 24= x+7

5. 17= x

Answer:

the first one hehdhdhrgdhfggd

Answer:  

tan theta = -1

we know tan = opposite/ adjacent

So opposite/adjacent = -1

Multiply by adjacent on each side

opposite = - adjacent

We also know from pythagorean theorem that

opposite ^2 + adjacent ^2 = hypotenuse ^2

Substituting in for adjacent

opposite ^2 + (-opposite ) ^2 = hypotenuse ^2

opposite ^2 + opposite ^2 = hypotenuse ^2

2 opposite ^2 = hypotenuse ^2

Taking the square root on each side

sqrt(2 opposite ^2)   =  sqrt(hypotenuse ^2)

sqrt(2) opposite = hypotenuse

We are now set to find the sec

sec theta = hypotenuse / adjacent

              = sqrt(2) opposite/ adjacent

Replace the opposite = -adjacent

                = sqrt(2) (-adjacent)/adjacent)

                = -sqrt(2)

Step-by-step explanation:

Answer:

tan theta = -1

we know tan = opposite/ adjacent

So opposite/adjacent = -1

Multiply by adjacent on each side

opposite = - adjacent

We also know from pythagorean theorem that

opposite ^2 + adjacent ^2 = hypotenuse ^2

Substituting in for adjacent

opposite ^2 + (-opposite ) ^2 = hypotenuse ^2

opposite ^2 + opposite ^2 = hypotenuse ^2

2 opposite ^2 = hypotenuse ^2

Taking the square root on each side

sqrt(2 opposite ^2)   =  sqrt(hypotenuse ^2)

sqrt(2) opposite = hypotenuse

We are now set to find the sec

sec theta = hypotenuse / adjacent

             = sqrt(2) opposite/ adjacent

Replace the opposite = -adjacent

               = sqrt(2) (-adjacent)/adjacent)

               = -sqrt(2)

Step-by-step explanation:

Answer:

17.7 inches

Step-by-step explanation:

Use the Pythagorean Theorem.

length² + width² = diagonal²

width² = diagonal² - length² = 19² - 7² = 312

width = √312 ≅ 17.7 inches

Answer:

17.7

Step-by-step explanation:

got it right at k12 :)

Answer:

x>-1

Step-by-step explanation:

Answer:

Part A. The girls have 7/8 pizza all together.

Part B. Samantha drank 5/10 or 1/2 water that day.

Step-by-step explanation:

Part A. The answer is 7/8 because 2/4 is the same thing as 4/8.

2/4 = 4/8

4/8 + 3/8 = 7/8.

So, for the first question the answer is 7/8.

Part B. The answer is 5/10 because 1/5 = 2/10

1/5 = 2/10

2/10 + 3/10 = 5/10

Hope this helps! :)

Answer:

I really don't know

Step-by-step explanation:

Answer:

$14

Step-by-step explanation:

Since the original price of the game was $48 and the store wanted to sell it with 1/4 off the total price, we can say that (48) - (48 *1/4) = 36. Since marcus thought that he was buying the game for 1/4 of the original price, that would be 48 * 1/4 = 12.

The difference between 36 and 12 is 14, which would be the answer.

Answer:

he would need 11 quarters.

Step-by-step explanation:

you already have 3 dimes which is $0.30 and 11 quarters is $2.75.

Answer:

8x - 16

Step-by-step explanation:

8(x−2)

=(8)(x+−2)

=(8)(x)+(8)(−2)

=8x−16

Answer:

99g

Step-by-step explanation:

I'm guessing on this one but maybe because a whole number has no remainder

Answer:

96.2

Step-by-step explanation:

96.2 is more precise than 99.

Answer:

y = 2/3x+2

Step-by-step explanation:

Answer:

Step-by-step explanation:

3/4x3=9/4

Answer:

2 1/4

Step-by-step explanation:

3/4+3/4=1 2/4

1 2/4+3/4=2 1/4

Answer:

180-144.5= 35.5

Explanation:

Supplementary means two angles add up to 180 degrees.

so 180-144.5= 35.5

Hope it helps you.

Answer:

it will take 10 minutes to fill 3 cups of the same size

Step-by-step explanation:

Answer:

10 Min

Step-by-step explanation:

Answer:

The solution is [tex]x = \frac{39}{4}[/tex]

Step-by-step explanation:

We are given the following equation:

8x - 61 = 17

We want to find the solution, that is, the value of x. So

[tex]8x - 61 = 17[/tex]

[tex]8x = 78[/tex]

[tex]x = \frac{78}{8}[/tex]

Simplifying by 2

[tex]x = \frac{39}{4}[/tex]

The solution is [tex]x = \frac{39}{4}[/tex]

Answer:

180-(61+59) should give you the answer

Answer:

61+59

Step-by-step explanation:

gives u your answer

Answer:

42/3

Step-by-step explanation:

Answer:32

Step-by-step explanation:

Answer:

15.22

Step-by-step explanation:

The equation of the circumference of a circle is 2(pi)r

This is actually because 2pi is angle of the arc that makes up the full circle (radians of course)

so a simple formula is:

arc length in radians X radius

radius = 4 cm

the area that the question wants is the oposite

of the 142 degree section so 360 - 142 = 218

218 degrees *  (pi/180) = 3.80482 rad

3.80482 * 4 = 15.21928 cm

Answer:

to represent what-

Step-by-step explanation:

Answer: The solution is the point (-14, -54)

Step-by-step explanation:

When we have a system of linear equations like:

y = a*x + b

y = c*x + d

The solution of this system is the point (x, y) that is a solution for both equations, if we graph the lines, this point would be the point where the lines intersect.

To start with this, we need to find the equations of the lines, we will use the following:

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

Now, for the first table, we can use the points: (-3, -10) and (0, 2)

The slope of this line is:

a = (2 - (-10))/(0 - (-3)) = 12/3 = 4

then we have:

y = 4*x + b

To find the value of b, we can just replace one of the points in the equation, for example, we can use the point (0, 2), this means that we need to replace x by 0, and y by 2.

2 = 4*0 + b

2 = b

Then the equation for the first table is y = 4*x + 2

For the second table, we can use the points (0, -12) and (3, - 3)

Then the slope is:

a = (-3 - (-12))/(3 - 0) = 9/3 = 3

Then we have:

y = 3*x + c

And to find the value of c, we can do the same as before, now we use the point (0, -12) then:

-12 = 3*0 + c

-12 = c

Then the equation for this line is:

y = 3*x - 12

The system of linear equations is then:

y = 4*x + 2

y = 3*x - 12

To find the solution of the system, we must have that y = y, then we can write:

4*x + 2 = y = 3*x - 12

4*x + 2 = 3*x - 12

Now we can solve this for x.

4*x - 3*x = -12 - 2

x = -14

x = -14

Now we can replace this in one of the equations to find the value of y.

y = 3*(-14) - 12 = -54

Then the solution is the point (-14, -54)

Answer:

A. [tex]4(2x+1)(x-2)[/tex]

Explanation:

[tex]8x^{2} -12x-8[/tex]

1. You can factor out a 4.

        [tex]4(2x^{2} -3x-2)[/tex]

2. Factor [tex](2x^{2} -3x-2)[/tex].

        X-Method:

        1. Draw an X

        2. Multiply ac (2(-2)=-4) then put it in the top part of the X

        3. Then put b, -3, in the bottom part of the X

        4. On the two sides of the X find out what added together equals b, -3,

        and multiplied equals ac, -4.

        5. -4(1)=-4 & -4+1=-3

        6. If the quadratic has a coefficient then you must divide the two sides

        of the X by that coefficient, 2.

        7. -4/2=-2 & 1/2 can't be evenly divided into, so in this case the

        coefficient remains.

        8. When you write this out it will be (2x+1)(x-2)

3. Put it together to get your answer.

        [tex]4(2x+1)(x-2)[/tex]

Answer:

A

Step-by-step explanation: