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Hunter-Best [27]
3 years ago
13

Add. −0.9+2.0 Enter your answer, as a decimal, in the box.

Mathematics
1 answer:
Sveta_85 [38]3 years ago
6 0

Answer:

19.1

Step-by-step explanation:

-0.9+20 = 19.1

You might be interested in
99.1 times 11.2 estimate
Vladimir [108]

To estimate:

99.1 can be approximated by 100-1%

11.2 can be approximated by 11.1+1%

So 99.1*11.2 can be approximated by (100*11.1)-1%+1%=1110


3 0
3 years ago
Select the three equations that have the same solution.
frozen [14]

Answer:

B,C,D

Step-by-step explanation:

B= solve your equation step-by-step.

y

1.75

=4

Step 1: Multiply both sides by 1.75.

y

1.75

=4

(

y

1.75

)*(1.75)=(4)*(1.75)

y=7

----------------------------------------------------------

C=  solve your equation step-by-step.

5y=35

Step 1: Divide both sides by 5.

\frac{5y}{5} = \frac{35}{5}

Thus y=7

---------------------------------------------------------

D= solve your equation step-by-step.

22+y=29

Step 1: Simplify both sides of the equation.

y+22=29

Step 2: Subtract 22 from both sides.

y+22−22=29−22

y=7

------------------------------------------------------------

4 0
3 years ago
AAAH HELP! Assume that r varies directly as p. What is the constant of proportionality if r = 3 when p = 15. k = 1\5 k = 5 k = 3
Alexus [3.1K]

Answer:

k = \frac{1}{5}

Step-by-step explanation:

Given that r varies directly as p then the equation relating them is

r = kp ← k is the constant of variation

To find k use the condition r = 3 when p = 15, then

3 = 15k ( divide both sides by 15 )

\frac{3}{15} = k , that is

k = \frac{1}{5}

8 0
3 years ago
-2x + 6y=4<br> 5x + y = 6 using cramers rule
Deffense [45]

Answer:

The answer to your question is x = 1   y = 1

Step-by-step explanation:

Data

      -2x + 6y = 4           Equation l

       5x + y = 6              Equation ll

Process

1.- Calculate Δ

Δ  =    | -2   6 |

          | 5    1 |  = (-2 x 1) - (5 x 6)

                       = -2 - 30

                       = - 32

2.- Calculate Δx

Δx =  | 4   6 |

        | 6    1 |   = (4 x 1) - (6 x 6)

                      = 4 - 36

                      = -32

3.- Calculate Δy

Δy = |  -2  4 |

       |  5   6  |  = (-2 x 6) - (5 x 4)

                      = -12 -20

                      = -32

4.- Find x and y

x = Δx/Δ = -32/-32 = 1

y = Δy/Δ = -32/-32 = 1

7 0
4 years ago
I need help with C, thank you.
guapka [62]
Simple....

\frac{3}{4} x\ \textless \  \frac{9}{2}

x<6

This means that on your graph at 6 it's a circle (not colored in) and it goes to the left indefinitely...

Thus, your answer.
6 0
3 years ago
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