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3 years ago

Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is

Mathematics

2 answers:

CaHeK987 [17]3 years ago

7 0

Answer:

The System of equation is $x+y=29, 5x + 2y = 100$ .

Step-by-step explanation:

Given:

Let 'x' be the number of questions worth 5 points.

Let 'y' be the number of questions worth 2 points

Total Number of Problems = 29

So the Total Number of Problems is equal to sum of the number of questions worth 5 points and the number of questions worth 2 points.

Framing in equation form we get;

$x+y=29$ .

Also Given:

Test is of Total Points = 100

Now Total points in test is equal to sum of the number of questions worth 5 points multiplied by and the number of questions worth 2 points multiplied by 2.

Framing in equation form we get;

$5x+2y=100$

Hence The System of Equations are $\left \{ {{x+y=29} \atop {5x+2y=100}} \right.$ .

sashaice [31]3 years ago

7 0

I hope you did great! but i have to use this im very sorry

Step-by-step explanation:

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Simplify x + 2 + x + 2 + x + 2 + x + 2 + x + 2 + x + 2 + x + 2 + x + 2 + x + 2. Write in simplified form, giving reasons. Someon

Oksanka [162]

easiest thing to do is combine like terms. There are 9 2's, which means 9(2) which equals 18. Now for the X's. There are 9 X's meaning (9)x which is 9x. This all makes up

18+9x

hope this helps

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3 years ago

Read 2 more answers

How tdo cells communicate through chemical signaling.

Iteru [2.4K]

Answer: Cells typically communicate using chemical signals. These chemical signals, which are proteins or other molecules produced by a sending cell, are often secreted from the cell and released into the extracellular space. There, they can float – like messages in a bottle – over to neighboring cells.

Step-by-step explanation:

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2 years ago

Jollibee employs a total of 10 cashiers and 15 kitchen crews. The manager selects a team of 2 cashiers and

Airida [17]

Answer:

The manager can select a team in 61425 ways.

Step-by-step explanation:

The order in which the cashiers and the kitchen crews are selected is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In how many ways can the manager select a team?

2 cashiers from a set of 10.

4 kitchen crews from a set of 15. So

$T = C_{10,2}*C_{15,4} = \frac{10!}{2!(10-2)!}*\frac{15!}{4!(15-4)!} = 45*1365 = 61425$

The manager can select a team in 61425 ways.

7 0

3 years ago

Please help, I need to complete a bunch of work by tomorrow, please show your work if possible.

Tom [10]

Answer:

(5n) / m^2

Step-by-step explanation:

45m^2n^4

---------------

18m^4n^3 may be factored into m, n and constant terms:

45 m^2 n^4

----- * ---------- * -----

18 m^4 n^3

45/18 reduces to 5/2.

m^2 / m^4 reduces to 1 / m^2.

n^4 / n^3 reduces to n. 5n

Multiplying these results together produces: --------

m^2

8 0

3 years ago

In the diagram below, every pair of segments which do not intersect are parallel, and the measure of angle k is 89 degrees. What

solong [7]

From the figure shown:
Given that k=89, then:
c=g=k=o=s=w=89
b=f=j=n=r=v=89
d=h=l=p=t=x=180-89=91
a=e=i=m=q=u=91
thus the sum of <span> s,e,q,u,o,i,a will be:
</span>s+e+q+u+o+i+a
=89+91+91+91+89+91+91
=633°

Answer: 633°

4 0

3 years ago