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mina [271]
3 years ago
8

Can an expression like 2a+7 be true or false

Mathematics
2 answers:
8_murik_8 [283]3 years ago
5 0
The answer would be true
Step2247 [10]3 years ago
4 0

Yes the expression 2a+7 can be true

It is simply 2 multiplied by a + 7

You might be interested in
{−2x+7y=−7 <br> −5x+14y=−7
Sati [7]

Answer: x=7, y=2

Step-by-step explanation:

1. -2(-2x+7y=-7) -> 4x-14y=14

2. 4x-14y=14

   -5x+14y=-7

3. -x = 7, x=7

4. -5(7)+14y=-7

5. -35+14y=-7

6. 14y=28, y=2

3 0
3 years ago
Read 2 more answers
Solve this system of linear equations. Separate the x- and y- values with a comma.
liubo4ka [24]

Answer:

(-1,4)

Step-by-step explanation:

Using elimination, add the two equations to get rid of the y variable.

17x = 43 - 15y

+8x = -68 + 15y

=25x = -25

<u>x = -1</u>

Now plug in -1 for x in any of the equations.

17(-1) = 43 - 15y

-17 = 43 - 15y

-60 = -15y

<u>y = 4</u>

6 0
3 years ago
Can you guys help me I need help
dem82 [27]

Answer:

182m^2

Step-by-step explanation:

Area of parallelogram. Base x Height = 13 x 14 = 182m^2

Hope this helps.

3 0
3 years ago
A number is written in scientific notation.
V125BC [204]
If it’s 2.089 x 10^5 then the answer’s (c): 208,900
8 0
3 years ago
(20 points and brainlest to whoever answers correctly!!!)
Stells [14]

Answer:

y = -2/3x - 11

Step-by-step explanation:

Steps to find the perpendicular bisector:

1) Find the midpoint of line PQ

Midpoint formula: (\frac{x_{1} + x_{2} }{2} \\, \frac{y_{1} + y_{2}}{2})

Midpoint of line PQ = (6, -2)

2) Find the slope of line PQ

Slope formula: \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

Slope of line PQ = 3/2

3) Find the negative reciprocal of the slope of PQ

To find the negative reciprocal just swap the numerator and denominator and add a negative sign. If it is already negative it will become positive.

In this case it will be -2/3

4) Write the equation of line PQ in slop-intercept form.

Slope-intercept form: y = mx + b

This is what it will look like for line PQ: y = \frac{3}{2}x + b

5) Plug the points of the midpoint into the line and solve for the intercept (b)

This is what it will look like: -2 = \frac{3}{2}(6) + b

-2 = 18/2 + b

-2 = 9 + b

-11 = b

6) Write the equation of the perpendicular bisector

m = the negative reciprocal of the slope of PQ = -2/3

This is what the equation will look like: y = -2/3x - 11

Hope this helped! Please give Brainliest!

5 0
3 years ago
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