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IgorC [24]
3 years ago
11

Which expression is equivalent to 0.75a + 10b + a – 2b?

Mathematics
1 answer:
nexus9112 [7]3 years ago
3 0

Answer:


Step-by-step explanation:

Sum a with a-s ;b with b-s so:

0.75a + 10b + a – 2b=0.75a+a+10b-2b=1.75a+8b

You might be interested in
Inspect the number line. Which square roots have a difference of about 0.5? StartRoot 11 EndRoot and StartRoot 14 EndRoot StartR
natka813 [3]

Answer:

d

Step-by-step explanation

just answered the question

5 0
3 years ago
Read 2 more answers
PLEASEE HELPPPP!!!!! ASAP SEE ATTACHED!
stiks02 [169]
Short answer: C
Let's start with the pen. 
The length is x
The width is 3 more.= x + 3 
Perimeter of the pen = 2L + 2W
P = 2 L + 2W
P = 2*x + 2(x + 3)
P = 2x + 2x + 6
P = 4x + 6. Leave that for now.

Area of the pen without the doghouse = x(x + 3)
Area of the pen without the doghouse = x^2 + 3x
Area with the doghouse x^2 + 3x - y = 178 (that's his running around space.

Go to the dog house for a Moment
The perimeter of the doghouse and the area are equal and we are told to make them both y.
Area = y
Perimeter = y

Combined facts.
The perimeter of the Pen is three times larger than that of the dog house.
4x + 6 = 3y

The area of the Pen - The area of the doghouse = 178
x^2 + 3x - y = 178

Now what happens is that you have to juggle these two equations so they look like your answer
x^2 + 3x - y = 178
4x + 6 = 3y  Subtract 3y from both sides.
4x - 3y + 6 = 0 Subtract 6 from both sides.
4x - 3y = - 6

Answer C
6 0
3 years ago
PLEASE HELP!! 10 POINTS!!WILL MAKE BRAINLIEST
Grace [21]

58):  Solution =====>    Letter Choice,  (C)      1.25m      =       1.50(m      -      2)

Let's solve your equation step-by-step.

1.25m       =      1.5(m     −     2)

Step 1: Simplify both sides of the equation.

1.25m     =        1.5(m    −      2)

1.25m     =      (1.5)(m)       +        (1.5)(−2)                                  (Distribute)

1.25m       =       1.5m          +           −3

1.25m        =       1.5m       −       3

Step 2: Subtract 1.5m from both sides.

1.25m      −       1.5m      =      1.5m     −      3      −       1.5m

−0.25m           =            −3

Step 3: Divide both sides by -0.25.

-0.25m/ -0.25        =          -3/ -0.25

m       =========>    12

Answer    ===========>      m       =        12



59):   Let  your Number be:    D  

Solution:     =====>    7D       =      5D        -      3   =====>  -3/2    =====>    -1.5

Seven Times a number:

7   *     D      or    7(D)

Three Less than Five Times that Number:

5D     -     3

7D       =        5D       -    3

Solve for D:

7D   =    5D     -    3

Subtract   5D   from both sides:

7D   -    5D      =    5D     -     3      -   5D

2D       =           -3

Divide both sides by  2:

2D/2     =       -3/2

D                   =             -3/2

Answer  ==>  D  ====>      -3/2     ========>    Letter Choice, (F)      - 1.5




60):    Letter Choice,   (C),    3x      -     9      =    5x  

Let's solve your equation step-by-step.

3x       −      9       =         5x

Step 1: Subtract 5x from both sides.

3x      −       9       −      5x      =      5x     −      5x

−2x       −     9       =      0

Step 2: Add 9 to both sides.

−2x      −       9        +      9       =       0       +      9

−2x       =       9

Step 3: Divide both sides by -2.

-2x/ -2      =      9/ -2

x        =            -9/2

Answer   ========>         x         =       -9/2       =======>  4.5




61):   Subtract:

500    -      120

=      380

Need to total 500:

380

Find Number of Weeks Divide:

380/20    =      19  Weeks

7   *   19     =    133  

Days it will take Nichole to save  $500.00 =======>   133 Days





62):    Gridded Response:

Solve:

- 2(x     -     1 )       +        5x       =     2(2x        -     1 )  ======>      x     =      4

( -2 )(x)     +     ( -2)( - 1 )    +     5x     =   (2)(2x)      +    (2)( - 1 )

Distribute:

- 2x     +  2     +    5x     =     4x      +        - 2

( - 2x     +    5x )       +        (2)        =       4x     -     2       (Combine  Like terms):

3x    +   2        =    4x       -    2

3x         +      2     =      4x      -   2

Subtract   4x   From both sides:

3x     +    2      -     4x       =       4x     -     2      -    4x     -     x     +   2     =      -2

Subtract  2   from both sides:

-x     +     2    -   2       =         -2       -      2

-x         =       -4

Divide both sides  by     -1:

-x/ -1      =      -4/ -1

x         =     4

Answer   =====>      x      =      4           Check the Graph down below  for Gridded Response on Number 62.      






Hope that helps!!!                                            : )     _P_












6 0
3 years ago
Can somebody help me with number 25
Mice21 [21]
Slope = (y2 - y1)/(x2 - x1)

Given the points (2, 2) & (-4, -3)

m =  \frac{-3 - 2}{-4 - 2} \\ m =  \frac{-5}{-6}  =  \frac{5}{6}
7 0
4 years ago
Read 2 more answers
Tanx-cotx / sinxcosx =sec^2-csc^2x. Please show all steps. 
Katarina [22]
\bf \cfrac{tan(x)-cot(x)}{sin(x)cos(x)}\implies \cfrac{\frac{sin(x)}{cos(x)}-\frac{cos(x)}{sin(x)}}{sin(x)cos(x)}\implies \cfrac{\frac{sin^2(x)-cos^2(x)}{cos(x)sin(x)}}{\frac{sin(x)cos(x)}{1}}
\\\\\\
\cfrac{sin^2(x)-cos^2(x)}{cos(x)sin(x)}\cdot \cfrac{1}{sin(x)cos(x)}\implies \cfrac{sin^2(x)-cos^2(x)}{cos^2(x)sin^2(x)}
\\\\\\
\textit{and now, we distribute the denominator}
\\\\\\
\cfrac{sin^2(x)}{cos^2(x)sin^2(x)}-\cfrac{cos^2(x)}{cos^2(x)sin^2(x)}\implies 
\cfrac{1}{cos^2(x)}-\cfrac{1}{sin^2(x)}

and surely you know what that is

3 0
3 years ago
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