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4 years ago

Round 15.6895 to the nearest tenth.

Mathematics

2 answers:

ehidna [41]4 years ago

5 0

Answer:

15.7

Step-by-step explanation:

'6' is in the tenths place in 15.6895. The digit following this '6' is '8,' which requires rounding up this '6' to '7.'

Thus, to the nearest tenth, we get 15.7.

salantis [7]4 years ago

4 0

16, Because when rounding to the nearest ten you look at the number behind the dismal if it is 5 or above you go up below 5 stay the same

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80 POINTS for right answer! 4 questions! Math only

34kurt

1.
A graph of linear function is a straight line.
Linear function in a slope-intercept form: y = mx + b

Answer: Equation 3: y = 12x + 17.

2.
x|-1 | 0 | 1 | ? |
y| 4 | 7 |10| ? |

a slope: $m=\dfrac{y_2-y_1}{x_2-x_1}$

We choose:
$(-1; 4)\to x_1=-1\ and\ y_1=4\\(0;\ 7)\to x_2=0\ and\ y_2=7$

subtitute:

$m=\dfrac{7-4}{0-(-1)}=\dfrac{3}{1}=3$

a slope-intercept form: $y-y_1=m(x-x_1)$

subtitute:

$y-4=3(x-(-1))\\\\y-4=3(x+1)\\\\y-4=3x+3\ \ \ \ |add\ 4\ to\ both\ sides\\\\y=3x+7\ (*)$

subtitute x = 2 to the equation (*):

$y=3\cdot2+7=6+7=13$

Answer: (2, 13)

3.
(-2; 7), (-5; 4)

the slope: $m=\dfrac{4-7}{-5-(-2)}=\dfrac{-3}{-5+2}=\dfrac{-3}{-3}=1$

$y-7=1(x-(-2))\to y-7=x+2\ \ \ \ |add\ 7\ to\ both\ sides\\y=x+9$

check other:

$(-8;\ 1)\to L=1;\ R=-8+9=1;\ L=R-correct\\(-11;-2)\to L=-2;\ R=-11+9=-2;\ L=R-correct$

The conclusion: It's a linear function

Answer: It is a linear function because there is a constant rate of change in both the input and output values.

4.
y = 3x + 5 /look at the picture/

Answer: It is a linear function because its graph contains the points (0, 5), (1, 8), (2, 11), which are on a straight line.

check:
$(0; 5)\to L=5; R=3\cdot0+5=5;\ L=R-correct\\(1;\ 8)\to L=8;\ R=3\cdot1+5=8;\ L=R-correct\\(2;\ 11)\to L=11;\ R=3\cdot2+5=11;\ L=R-correct$

8 0

4 years ago

Read 2 more answers

What is the value of x in the equation 25x = 16?

k0ka [10]

Answer:

Step-by-step explanation:

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

25x2=16

Step 1: Divide both sides by 25.

25x2

x2=

Step 2: Take square root.

x=±√

x=0.8,−0.8

5 0

3 years ago

PLEASE HELP I DONT HAVE MUCH TIME LEFT!

DIA [1.3K]

Answer:

2.66

Step-by-step explanation:

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3 years ago

A circle has an area of 30in². What is the area of a 60° sector of this circle?

Amanda [17]

Answer:

5 in^2

Step-by-step explanation:

The area of the sector will always be proportionate to the angle in the circle.

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3 years ago

The speeds of vehicles traveling on a highway are normally distributed with an unknown population mean and standard deviation. I

Artemon [7]

Answer:

The t-score of 2.715 should be used

Step-by-step explanation:

Degrees of freedom ==> n - 1 ==> 38 - 1 ==> 37

to find 99% confidence interval, Hence,

Find t0.005 in front of 37 degrees of freedom,

Therefore the answer is, t-score = 2.715

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4 years ago