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3 years ago

Parallel lines, transversal, and algebra really need help

Mathematics

1 answer:

guajiro [1.7K]3 years ago

3 0

Answer:

1. 58 = 5x-2, 60 = 5x, x = 12

2. 134 = 16x+22, 112 = 16x, x = 7

3. 125 = 7x-1, 126 = 7x, x = 18

4. 133+9x+2 = 180, 9x=45, x=6

5. 8x-77 = 3x+38, 5x = 115, x=23

6. 11x-47 = 6x-2, 5x = 45, x=9

7. 13x-21 = 5x+75, 8x = 96, x=12

8. 5x+3+9x-33 = 180, 14x = 210, x=15

9. 8x-31 = 6x+3, 2x = 34, x=17

5y+35+6(17)+3 = 180, 5y = 40, y = 8

10. 29x-3+15x+7 = 180, 44x = 176, x=4

13y-17+15(4)+7 = 180, 13y = 130, y=10

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A statistics teacher was interested in the relationship between you and the number of days students waited to start a project

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Answer:

C. 89.22

Step-by-step explanation:

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edge 2020

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4 years ago

What is the length of xy?

Sav [38]

Given:

$XR=x+8$

$RY=4x-10$

Since R is the midpoint of the line, we can set XR equal to RY and solve for x.

$RY=XR$

$4x-10=x+8$

$4x=x+18$

$3x=18$

$x=6$

Now we know what x is. We can plug in x to RY and XR and then add it all together to find XY. Let's find XR:

$XR=6+8$

$XR=14$

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$RY=4(6)-10$

$RY=24-10$

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Since we know that:

$XR+RY=XY$

We can plug in our answers:

$14+14=XY$

Final answer:

$XY=28$

8 0

4 years ago

Read 2 more answers

What is the lateral surface area of a rectangular prism with a base length of 9 yd, a

vredina [299]

Answer:

I think its B 252yd^2

Step-by-step explanation:

i got 254 so it might be 252

5 0

4 years ago

Read 2 more answers

The length of a rectangle is 5 inches more than 3 times the width. If the area of the rectangle is 68 square inches, what is the

Paladinen [302]

Answer:

Width=4, and Length=17

Step-by-step explanation:

first you will make a variable for the width which i will say is x

now make it an equation (3x+5) (x) = 68

then solve 3x^2+5x=68

then 3x^2+5x-68=0

then x=4

then you have to substitute so 3(4)+5= 17 and 4

6 0

3 years ago

a culture started with 4,000 bacteria. after 7 hours,it grew to 5,200 bacteria. Predict how many bacteria will be present after

serious [3.7K]

Start with trying to figure out rate (r):
P = i•e^rt
5200 = 4000•e^(r•7)
5200/4000 = 1.3 = e^7r
ln 1.3 = ln (e^7r)
.262 = 7r•1, because the ln (e) = 1
r = .262/7 = .0375
Now that you have the rate, plug in that for r and 9 hours as the new t, with again our 4200 as the i
P = i•e^rt = 4200•e^(.0375•9)
P = 4200•1.401 = 5,886 bacteria

5 0

4 years ago