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astraxan [27]
3 years ago
8

Help on this to please

Mathematics
2 answers:
Levart [38]3 years ago
7 0
<h2>Finding the slope of a line given the graph</h2><h3>Answer:</h3>

7) \frac{1}{2}\\

8) -\frac{5}{4}\\

<h3>Step-by-step explanation:</h3>

<em>Please refer to my Answer from this question to know more about the slope of a line: <u>brainly.com/question/24599351</u></em>

In graph 7, we can see that the points, (-1,-4) and (1, -3) are on the line so these can be our points 1 and 2. Now we can find the slope.

\frac{-3 -(-4)}{1-(-1)} \\ \frac{-3 +4}{1 +1} \\ \frac{1}{2}

The slope of line in graph 7 is \frac{1}{2}\\.

In graph 8, we can see that the points, (-4,4) and (0, -1) are on the line so these can be our points 1 and 2. Now we can find the slope.

\frac{-1 -4}{0-(-4)} \\ \frac{-1 -4}{0 +4} \\ \frac{-5}{4} \\ -\frac{5}{4}

The slope of line in graph 8 is -\frac{5}{4}\\.

d1i1m1o1n [39]3 years ago
5 0

Answer:

7). up 4 over  4

8). up 1 over 2

Step-by-step explanation:

hope this helps :)

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SUPER HARD!!!
Sonbull [250]

Answer:

For #1, the equation would be (21 - 3) ÷ 4.75 ≈ 4. For #3, the equation would be (900 + 10) ÷ 5 = 182. For #5, the equation is (22 x 2) - 5 = 39.

Step-by-step explanation:

im cool but srsly pls double check this

8 0
3 years ago
Read 2 more answers
Simplify the linear expression. −2x+3(−5x+1) Enter your answer in the box.
valina [46]

Answer:

3/17

Step-by-step explanation:

-2x + 3(-5x + 1)

-2x -15x +3

-17x + 3

17x = 3

x = 3/17

6 0
3 years ago
In a batch of ​pedometers, are believed to be defective. A​ quality-control engineer randomly selects units to test. Let random
Mazyrski [523]

Answer:

The mean for the probability mass function is 0.64287.

Step-by-step explanation:

The complete question is:

In a batch of ​28 pedometers, 3 are believed to be defective. A​ quality-control engineer randomly selects 6 units to test. Let random variable X = the number of defective units that are among the units tested.

The probability mass function ​f (x) is:

f (x)​ = {(0, 0.47009​), ​(1, 0.42308​), ​(2,​ 0.10073), ​(3, 0.00611​)}

Solution:

The mean of a discrete random variable X with probability mass function f (x) is:

\mu=\sum\limits^{n}_{x=1}{x\times f(x)}

Compute the mean for the probability mass function above as follows:

\mu=\sum\limits^{n}_{x=1}{x\times f(x)}

  =(0\times 0.47009)+(1\times 0.42308)+(2\times 0.10073)+(3\times 0.00611)\\=0+0.42308+0.20146+0.01833\\=0.64287

Thus, the mean for the probability mass function is 0.64287.

This values represents the expected number of defective units for every 6 units tested.

8 0
4 years ago
F(x,y,z)=66+5y+7+5t-9
VMariaS [17]
1) X + Y = 10
2) X + Z = 20
3) Y + Z = 24
what is X + Y + Z = ?

From equation 1, x = 10-y
Plug 10-y in place of x in equation 2

10-y+z = 20 subtract 10 from both sides
-y + z = 10

We now have 2 equations with just y and z

-y + z = 10 new equation
y + z = 24 add the 2 equations
--------------
2z = 34
z = 34/2
z = 17

We now have the value of z.
Plug that into equation 3

y + z = 24
y + 17 = 24
y = 24-17
y = 7

We now have the value of both z and y.
Plug the value for y into equation 1 to find x

x + y = 10
x + 7 = 10
x = 10-7
x = 3

Your values are x = 3, y = 7, z = 17
5 0
2 years ago
Which statement abou y= 7x2 + 23x + 6 is true
Arte-miy333 [17]
Answer: The axis of symmetry is

X = -23/14 and the maximum and minimum value is (-23/14, -361/28)

Step-by-step explanation: I can’t help you further than that unless you show me the options

Mark me as brainliest
4 0
3 years ago
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