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andreyandreev [35.5K]
3 years ago
9

Please help me please pleaseee

Mathematics
2 answers:
xxTIMURxx [149]3 years ago
6 0

Answer:

2.57

Step-by-step explanation:

MatroZZZ [7]3 years ago
4 0

Answer:

2.57

Step-by-step explanation:

10*10*10 = 1000

2570/1000 = 2.57

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Write 1.2 x 10-4 in decimal form.
katrin [286]

The number (in scientific notation) is:

1.2\times10^{-4}

The power of "-4" tells us to move the decimal point 4 places to the left.

So, moving it, the number becomes:

1.2\times10^{-4}=0.00012

3 0
1 year ago
-3x+3y=-18<br> 5x-2y=9<br><br><br> (-1,-7)<br><br> (-4,-1)<br><br> (4,-1)
ch4aika [34]

Answer:the answer is the third on

Step-by-step explanation:

7 0
3 years ago
When full a 22-gallon gas tank can hold 129.8 pounds of gasoline. Estimate the weight of one gallon of gasoline.
coldgirl [10]

ANSWER:

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STEP-BY-STEP EXPLANATION:

Gasoline put into one gallon

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6 0
3 years ago
An election ballot asks voters to select four city commissioners from a group of sixteen candidates. In how many ways can this b
anygoal [31]

Answer: 1820

Step-by-step explanation:

The first can be selected in 16 ways, the second in 15 ways, the third in 14 ways and the last in 13 ways

i.e. 16 x 15 x 14 x 13 => 43680

However, the order of the candidates does not matter and they can be selected in 4 x 3 x 2 x 1 => 24 ways

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7 0
3 years ago
I provided the answers I just need you to show work. I’ll even mark you the Brainliest!
Sindrei [870]

The intercepts and the graph on your worksheet are not correct. Please see below for details:

x^2-2x-3=0 has solutions at x=-1 and x=3 (use the quadratic formula to solve). That means these are the x-intercepts, namely points:

(-1,0) and (3,0).

The y-intercept comes from setting x=0 and calculating the y value:

y=0^2-2\cdot0-3=-3

so the y-intercept is (0,-3).

Now to the graph: Based on the form of the function we can see this is a quadratic function and its graph will be a parabola. You can reformat the expression in the following form

y = x^2-2x-3=(x-1)^2-4

and that will indicate that the apex of the parabola (open up) will be at the point (1,-4).

Knowing the apex, the x intercepts, and the y intercept, we can graph it now.

Graph is in the image attached.

6 0
3 years ago
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