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dangina [55]
2 years ago
6

6.8(6.7 – 7.2) – 2(4.6 + 1.2) = ???????

Mathematics
2 answers:
kobusy [5.1K]2 years ago
6 0
The answer would be -15

Gnesinka [82]2 years ago
3 0

Answer:

6.8(6.7 – 7.2) – 2(4.6 + 1.2) =-15

Step-by-step explanation:

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When building a house, the number of days required to build varies inversely with with the number of workers. One house was buil
Helga [31]

Let d represent number of days and n represent number of workers.

We have been given that when building a house, the number of days required to build varies inversely with with the number of workers.

We know that the equation y=\frac{k}{x} represents the relation where y is inversely proportional to x and k is the constant of proportionality.  

So our required equation would be d=\frac{k}{n}

Upon substituting our given values, we will get:

19=\frac{k}{35}

k=19\cdot 35

k=665

Since constant of proportionality is 665, so our equation would be d=\frac{665}{n}.

To find the number of days it will take to build a similar house with 5 workers, we will substitute n=5 in our equation as:

d=\frac{665}{5}

d=133

Therefore, it will take 133 days for 5 workers to build a similar house.

5 0
3 years ago
1. y2 + 5y –24<br>stem by stem math please..​
spayn [35]

Answer:

(y+8) (y-3)

Step-by-step explanation:

y2+5y-24

=y2+8y-3y-24

=y(y+8)-3(y+8)

=(y+8) (y-3)

5 0
3 years ago
What is the equation of the line that passes through the point (-1,7) and is parallel to the line y= -2x-1
Nuetrik [128]

if we look at the equation y = -2x - 1, is already in slope-intercept form, therefore, \bf y=\stackrel{slope}{-2}x-1 has a slope of -2.


now, parallel lines have exactly equal slopes, therefore a parallel to that one above, will have also a slope of -2, so we're really looking for a line whose slope is -2 and runs through -1, 7.


\bf (\stackrel{x_1}{-1}~,~\stackrel{y_1}{7})\qquad \qquad \qquad slope =  m\implies -2\\\\\\\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-7=-2[x-(-1)]\\\\\\y-7=-2(x+1)\implies y-7=-2x-2\implies y=-2x+5

3 0
3 years ago
.<br> Choose the description of the graph of the equation x = -8.
pickupchik [31]
The description should be a vertical line on the negative side on the grid and the vertical line should be placed on the negative 8 on the x axis.

3 0
3 years ago
Read 2 more answers
If i have 2 c's 2 A's 3 b's and 1 d what is my gpa and would i be able to pass 8th grade
IgorC [24]
A= 4 points
B= 3 points
C= 2 points
D= 1 point
F= 0 points

So you add 2+2+4+4+3+3+3+1
Which equals 22
Now divide 22 by 8
You get 2.75
So yes with a 2.75 gpa you should pass 8th grade as most schools require nothing less than a 2.0
8 0
3 years ago
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