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sveticcg [70]
2 years ago
15

I need help with the first questions!!

Mathematics
1 answer:
solniwko [45]2 years ago
3 0

Answer:

A

Step-by-step explanation:

Difference between (x) & (x')

P - P' = (2 - (-6) , 2 - 2) = (-8,0)

Q - Q' = (5 - (-3), 2 - 2) = (-8,0)

etc...

Always get (-8,0) hence -8 in x-direction

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s, of an item is s = c + mc, where c is the cost of the item and m is the percent markup based on cost. What is the formula solv
Kitty [74]

Answer:

Step-by-step explanation:

s=c+mc

s-c=mc

(s-c)/c=m

5 0
3 years ago
A number minus 8 is at least 14
Serhud [2]

Answer:

22

Step-by-step explanation:

just add 8 to 14, then there is your number that would equal 14 if 8 was subtracted from it

6 0
3 years ago
Read 2 more answers
SHALL GIVE BRAINLIEST ANSWER!! A ​40% solution of fertilizer is to be mixed with an ​80% solution of fertilizer in order to get
sdas [7]

Answer:

20 gallons of the 40% solution, 60 gallons of the 80% solution

Step-by-step explanation:

Let x = the gallons of the 40% solution, and y = the gallons of a 80% solution. The first thing we want to do here is to convert each percentage into decimal form - including the ​70% solution mixture.

40% = 0.40,

80% = 0.80, respectively 70% = 0.70

As you can tell, 0.40 is associated with x gallons, 0.80 is associated with y gallons, and the mixture contains 0.70 * 80 solution, as 0.70 is associated with 80. Therefore we can formulate the following expression,

0.40x + 0.80y = 0.70 * 80

At the same time x + y = 80, as the solution ( mixture ) is present with 80 gallons. Isolating x, x = 80 - y. Let us plug that into our expression, solving for y, following by x gallons.

0.40\left(\:80\:-\:y\:\right)\:+\:0.80y\:=\:0.70\:\cdot \:80

0.4\left(80-y\right)+0.8y=56 ( Multiply either side by 10 )

4\left(80-y\right)+8y=560 ( Expand )

320-4y+8y=560

320+4y=560

4y=240

y = \frac{240}{4} = 60 ( Substitute to solve for x )

x = 80 - y = 80 - 60 = 20

As you can see there are 20 gallons of the 40% solution, and 60 gallons of the 80% solution.

3 0
3 years ago
2 The temperature in Chicago was - 10 degrees Fahrenheit. It then rose 5 degrees.
olganol [36]

Answer:

Step-by-step explanation:

Given

Initial Temperature = -10

Increment = 5

Required

Solving (a): Write an Equation

The equation is to add the initial temperature and the increment

i.e

Equation = Initial Temperature + Increment

Solving (b): Solve the equation

Substitute values for initial temperature and the increment

Result = -10 + 5

Result = -5

Solving (c):

It's a negative answer because the increment in temperature is not greater than the initial temperature

3 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
Citrus2011 [14]

Answer:

a) Line M

b)Line M

c)y=1/2x+2

Step-by-step explanation:

a) Line M has a greater y-intercept since its y-intercept is at (0,2) while Line N's y-intercept is at (0,1)

b) Line M has a greater slope since its line is steeper

c) Use the formula y=mx+b

Use the points ( 0,1) and (-4,-1)

m(slope)= y2-y1/x2-x1

m= (-1-1)/(-4-0)

m=-2/-4

m=1/2

substitute

(0)=1/2(-4)+b

2=b(y-intercept)

y=1/2x+2

3 0
2 years ago
Read 2 more answers
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