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Mice21 [21]
3 years ago
10

I really need help. I'm failing this class guys

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
3 0

17. 2u +5.2 \leq 9.4 + u \\2u - u \leq  9.4 -5.2\\u \leq  4.2

18. 3(f+2) > 2f + 4\\3f + 6 > 2f + 4 \\3f-2f > 4-6\\f > -2\\ The answer is  I.

19. 4 < 6b -2 \leq 28\\4+2 < 6b \leq 28+2\\6 < 6b \leq 30\\6/6 < b \leq 30/6\\1 < b \leq 5

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25x + 6<br> 40x-3<br> 13x - 3<br> x=
gavmur [86]

I hope this picture helps you answer your question

4 0
3 years ago
Find the vertex, focus, and directrix. y = 1/24(x+1)² - 3. 
Vedmedyk [2.9K]
y = \frac{1}{24}(x+1)^2 - 3\\\\y+3 =\frac{1}{24}(x+1)^2\ \ / *24\\\\ (x+1)^2 = 24(y+3)

This   is  an  equation  of  a  parabola  that  opens  upwards.

Its \ standard \ form: \\(x-h)^2=4p(y-k)\\ (h,k)=(x,y) \ coordinates \ of \ the \ vertex\\\ (h,k)=(-1,-3) \\\\axis \ of \ symmetry: \ x= -1\\ \\4p=24\ \ /:4\\p=6

focus:(h,k+p)=(-1,-3+6)=(-1,3) \\ \\directrix: \ y=k-p=-3-6=-9


6 0
3 years ago
Read 2 more answers
7. A city lot is twice as long as it is wide, If its perimeter is 480 units, what are the dimensions of the lot?
g100num [7]

Answer:

Step-by-step explanation:

P = 480

P = 2 length + 2 width

but we also know that

2width = length

so plug that into the length

P = 2(2width) + 2 width

480 = 4 width + 2 width

480 = 6 width

80 = width

160= length

see?

3 0
3 years ago
6 is 55% of what number? Round answer to nearest tenth (1 number after decimal)
Arada [10]

Answer:

10.9

Step-by-step explanation:

Formula = Number x 100

Percent = 6 x 100

55 = 10.91

Following shows the steps on how to derive this formula

Step 1: If 55% of a number is 6, then what is 100% of that number? Setup the equation.

6

55% = Y

100%

Step 2: Solve for Y

Using cross multiplication of two fractions, we get

55Y = 6 x 100

55Y = 600

Y = 600

100 = 10.91

8 0
3 years ago
A line has a slope of -7 and a y-intercept of 3. What is its equation in slope-intercept form?​
katovenus [111]

Answer:

y=-7+3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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