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MArishka [77]
3 years ago
8

−1/2(7z+4)+1/5(5z−15)

Mathematics
1 answer:
Tanya [424]3 years ago
5 0

Answer:

Step-by-step explanation:

-7z/2 - 2 + z -3

=-5 - 5z/2

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In the rectagular prism shown below, GH is parallel to EF. If the equation of GH is 6y-x=2, could the equation of EF be 4=y-1/6x
ASHA 777 [7]

Answer:

Yes

Step-by-step explanation:

Given

GH:

-6y - x = 2

Required

Can EF be

4 = y - \frac{1}{6}x

First, we determine the slope of GH

-6y - x = 2

Solve for 6y

6y = -x - 2

Solve for y

y = -\frac{1}{6}x - \frac{2}{6}

y = -\frac{1}{6}x - \frac{1}{3}

An equation has the form:

y =mx + b

Where

m = slope

By comparison:

m = -\frac{1}{6}

Next, determine the slope of EF

4 = y - \frac{1}{6}x

Make y the subject

y = -\frac{1}{6}x + 4

The slope is:

m = -\frac{1}{6}

Compare the slopes of both lines.

m=m = -\frac{1}{6}

Since they have the same slopes, then the equation of EF is possible

4 0
4 years ago
Is there a proportional relationship between time and the amount of water left in the tank?​
Aleksandr-060686 [28]

Answer:

Yes

Step-by-step explanation:

y is the litters of water in the tank

x is the time in minutes

m is the change in litters

b is the initial amount of water

so the formula is y = mx + b

whereas m is -14 and b is 770

y = -14x + 770 or y = 770 - 14x

8 0
3 years ago
Based on a survey conducted by Greenfield Online, 25 - 34-year-olds spend the most each week on fast food. The average weekly am
DIA [1.3K]

The correct answer is P = 0.1357.

In solving for the probability (P) that the 34-year olds will spend more than $60 on fastfood, the mean and the standard deviation is to be taken into account. The mean (μ) being the $44 average weekly expenditure; while the standard deviation (σ) is $14.50. The formula goes this way P(X > 60) = P( X−μ > 60−44 ) = P ( X−μ/σ > 60−44/14.50). 

7 0
3 years ago
I need help with filling in this table, please help!!! I will give brainiest to whoever answers correctly!!!
Sphinxa [80]

Answer:

-4, 14+(-5) (-0.8), 14+ (3) (-0.8), 16.4

Step-by-step explanation:

The change in temperature for -5 is -4

The expression for -5 is 14+ (-5) (-0.8)

The expression for 3 is 14+ (3) (-0.8)

The actual temperature for 3 is 16.4

I did the math.

3 0
3 years ago
What figure has one endpoint and continues forever in one direction?
natima [27]
Ray. A line continues in two directions, a segment is finite, and an angle is (theoretically) two rays.
8 0
3 years ago
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