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anygoal [31]
3 years ago
9

Ingrid dug a trench 18/20 of a meter long. The next day she dug 9/20 of a meter more of the trench. What is a reasonable estimat

e of the total length of the trench?​
Mathematics
1 answer:
lutik1710 [3]3 years ago
6 0
Omg sorry i don’t really know i hope someone answers your question
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Pls help i dont understand :( will give Brainliest + 25 Points
umka21 [38]
It’s D. 4 is the one next to X because that’s what is changing and -3 is the y intercept which comes after X
3 0
4 years ago
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Jen Butler has beepricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 108. T
kicyunya [14]

3x + 4y = 108

2x + 3y = 77

----

answer:

x= adult = $16

y= child = $15


6 0
3 years ago
An equation is different from an expression because it has...
Kryger [21]

Answer:

Because it bears an equal sign

Expressions don't have a definite solution to the problem.

4 0
3 years ago
I’m lost and unsure what is the first step to do find width of da roof
Monica [59]

Answer:

You set up an equation, using the trig function "tan" to find half of the roof (the equation would be tan(24) = 3.5/x, where x = 1/2 roof width)

Step-by-step explanation:

That would be the first step.

You solve the equation for x, and then multiply x by 2 to get the width of the roof.

3 0
3 years ago
(а+1) (а+2)-(а+1)(а-2)-а-1
umka21 [38]
If you would like to calculate (a + 1) * (a + 2) - (a + 1) * (a - 2) - a - 1, you can do this using the following steps:

(a + 1) * (a + 2) - (a + 1) * (a - 2) - a - 1 = a^2 + 2 * a + 1 * a + 2 - (a^2 - 2 * a + 1 * a - 2) - a - 1 = a^2 + 3 * a + 2 - a^2 + 2 * a - 1 * a + 2 - a - 1 = 3 * a + 3

The correct result would be 3 * a + 3.
7 0
3 years ago
Read 2 more answers
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