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deff fn [24]
2 years ago
13

A jar lid is an example of a simple machine called a?

Mathematics
2 answers:
11111nata11111 [884]2 years ago
5 0

Answer:

A compound machine

Step-by-step explanation:

arlik [135]2 years ago
4 0

Answer: a screw

Step-by-step explanation:

You might be interested in
A system of 2 linear equations is ___ dimensional. It is a graph of _____ lines. The solutions can be _____ solution if the grap
dexar [7]

Considering High School level question, answer can be written as:


A system of 2 linear equations is [two] dimensional. It is a graph of [two] lines. The solutions can be [unique] solution if the graph intersects. [No] solution if the lines are parallel - meaning they have the same slope, or [Infinitely many] solutions if they are the same line.

Explanation:

when two lines are drawn on a two-dimensional plane then there are only three possible cases:


Case1: lines will intersect

In that case you will get a unique solution at the intersection point.


Case2: lines are parallel but don't touch each other

In that case there will be no point which lies on both lines so No solution.


Case3: lines are overlapping.

In that case all the points lies on both lines so infinitely many solutions.

3 0
2 years ago
Please solve question in picture branoist to first and correct​
Oliga [24]

Answer:

The correct answer is Option 3: 12y

Step-by-step explanation:

A polynomial term is usually made of a variable and a co-efficient.

Like terms are those terms that have the same variables i.e. x and 44x are like terms.

Given expression is:

6y-2y+8y

All the terms have only y which means that all three terms are alike.

The coefficients of like terms are added or subtracted according to their sign.

6y-2y+8y = 12y

Hence,

The correct answer is Option 3: 12y

6 0
2 years ago
Jada, Lin, and Elena are saving money for a trip. Together they saved $120. Jada saved $20 less than Lin. Lin saved 3 times as m
defon

Step-by-step explanation:

This is a word problem that we must translate to mathematical expression before we can solve.

let the individual saving be the first letters of the names

Jada= J

Lin= L

Elena= E

1. Jada saved $20 less than Lin

    J=L-20

2. Lin saved 3 times as much money as Elena

   L= 3E

3. Hence Elena saved

   E

Together they saved $120.

hence

(L-20)+3E+E= 120

L-20+3E+E= 120

collecting like terms we hav

L+4E=120+20

L+4E= 140

but we know that L= 3E

3E+4E= 140

7E= 140

divide both sides by 7 we have

E= 140/7

E= $20

This means Elena saves $70

also  L= 3E

L= 3*20

L= $60

this means that Lean saved $60

also  J=L-20

J= 60-20

J= $40

This means that Jada saved $40

6 0
3 years ago
A bank charges $0.25 per check and its monthly fees are $10. If Jerome issues 10 checks in a month, how much will a monthly chec
blsea [12.9K]
For this case, the first thing we must do is define variables.
 We have then:
 x: number of checks.
 y: total cost.
 We now write the linear function that represents the problem.
 We have then:
 y = 0.25x + 10

 Then, Jerome issues 10 checks in a month.
 Therefore, we evaluate the function for x = 10.
 We have then:
 y = 0.25 (10) + 10

y = 2.5 + 10

y = 12.5
 Answer:
 
a monthly checking account will cost him about:
 
y = 12.5 $
3 0
2 years ago
Read 2 more answers
Find an equation for the nth term of a geometric sequence where the second and fifth terms are -8 and 512, respectively.
love history [14]
The correct answer is C) a_n=2\times(-4)^{n-1}.

Since it is a geometric sequence, we multiply by a constant, r, each time to find the next term.

g₂ = -8
g₅ = 512

g₂ * r * r * r = g₅
-8(r)(r)(r) = 512
-8r³ = 512

Divide both sides by -8:
-8r³/-8 = 512/-8
r³ = -64

Take the cubed root of both sides:
∛r³ = ∛-64
r = -4

Now we work backward from g₂ to find g₁:

-8/-4 = 2

We have that g₁ = 2 and r = -4.  This gives us

a_n=g_1 \times r^{n-1}
\\
\\a_n=2 \times (-4)^{n-1}
5 0
3 years ago
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