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umka21 [38]
3 years ago
8

From y² + 5 y - 7, subtract y² - 3 y - 4​

Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0

<h3>{y}^{2}  + 5y - 7 - ( {y}^{2}  - 3y - 4) \\  {y}^{2}  + 5y - 7 -  {y}^{2}  + 3y + 4 \\  {y}^{2}  - y {}^{2}  + 5y + 3y - 7 + 4 \\ 8y - 3</h3>
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Joeff charges 20$ flat rate plus 27$ per hour to work on cars. how many dollars does joeff earn for a 5 hour job?
Ket [755]
Answer is $155 for the job

Step by step

You can use y intercept formula for this one.

Y = mx + b
Y = Dollars earned, what you are looking for.
M= rate per hour (27)
X = hours worked (5)
B = flat rate (20)

y = (27) (5) + 20

y = $155

Problem solved!
7 0
2 years ago
The slope of a line tangent to the graph of y=ln(x/2) at x=4 is
Semenov [28]

Answer: B

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

y = ln(\frac{x}{2} )

y' = \frac{1}{x}

y'(4) = \frac{1}{4}

3 0
3 years ago
meera is researching cruising speeds of different planes. which airplane has a greater cruising speed
Dahasolnce [82]

Answer:

50,350

is answer

4 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST WORTH THIRTY POINTS! Find a so that CD will have the given slope: a) C(5,−2), D(−4,a); m=0 b) C(a,–1), D(–3
Kay [80]

Step-by-step explanation:

Hey there!

Let's simply work with it.

a. C(5,-2) and D(-4,a).

and m=0

Now,

Here, we must find the value of a.

Use the slope formulae.

slope \: of \: cd =  \frac{y2 - y1}{x2 - x1}

Keep all values,

0 =  \frac{a + 2}{ - 4 - 5}

or, 0 = a+2

Therefore, the value of a is -2.

b. C(a,-1), D(-3,2).

and m= undefined.

using slope formulae,

slope(m) =  \frac{y2 - y1}{x2 - x1}

Keep all values,

undefined  =  \frac{2  + 1}{ - 3 - a}

As the slope is undefined it's value should same on both coordinates so, a must be "-3".

c. C(-3,-2) and D(1,a)

and m= 2.

now,

slope =  \frac{y2 - y1}{x2 - x1}

Keep all values.

2 =  \frac{a + 3}{1 + 3}

or, 8= a+3

Therefore, a= 5.

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

8 0
3 years ago
Read 2 more answers
What is the percentage of 0.08
disa [49]
You are going to do 0.08÷100=0.0008 and 0.0008*100=0.008. So, the percentage of 0.08 is 0.0008.
8 0
3 years ago
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