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Leviafan [203]
3 years ago
5

Next week your math teacher is giving a chapter test. The test will consist of 35 questions. some problems r worth 2 point and s

ome r worth 4 points. there are 20 questions worth 2 points. how many problems are worth 4 points. solve by substitution
Mathematics
2 answers:
natima [27]3 years ago
8 0
There are 15 questions worth 4 points 
KATRIN_1 [288]3 years ago
5 0
There are 35 total questions. You already know that 20 of the questions are worth 2 points. You subtract 20 from 35. 35-20=15. So 15 questions are worth 4 points.
Total questions~35. Worth 2 points~20. Worth 4 points~15.
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This is a test help pls
ehidna [41]

Answer:

No, because you can't have two x's be the same like the two apples that are there.

Step-by-step explanation:

5 0
3 years ago
Triangle DEF is a right triangle. If FE = 24 and DE = 7, find DF<br> 62<br> 168<br> 25<br> 625
Vanyuwa [196]
We are asked to solve for the value of DF in a given right triangle Δ DEF with sides measurements such as FE = 24 unit and DE = 7 unit. Since this is a right triangle, we can apply the Pythagorean theorem in solving the problem and the solution is shown below:
c² = a² + b²
FD² = FE² + DE²
Substitute the given measurements, we have:
DF² = 24² + 7²
DF² = 576 + 49
DF² = 625
DF = √625
DF = 25

The answer is 25 units for the DF measurement.

5 0
3 years ago
Read 2 more answers
Lester made a scale drawing of a house. The scale he used was 1 inch : 2 feet. In the drawing, the hall closet is 3 inches long.
Lelechka [254]

Answer: 6 feet

Step-by-step explanation:

1 inch= 2 feet

so

3 inches = 6 feet

ratio

6 0
3 years ago
Find and correct the error of the following factor.
mr_godi [17]

Answer:

C. The greatest common factor was not factored out correctly from second group

Step-by-step explanation:

The following lines show the process of factorization by using common factor.

<u>Line 1:</u>

In line 1, the equation is given and is grouped from which common factors can be taken. This is completely fine.

(3x^{2}+xy^{2}) +(-3xy-y^{3} )=0

The only thing missing was equate to zero, but the options below talk about correct factors only, therefore this can't be considered as a mistake and can be ignored completely.

<u>Line 2:</u>

In line 2, the common terms are taken out from groups. The common term x is taken from group 1 which is fine. In second group the common term -y  is taken out, which is fine but it was not factored out correctly. The correct factorization would have been:

x(3x+y^{2}) -y(3x +y^{2} )=0

which is different from what is given in line 2.

Options:

A. The grouping is correct in line 1. So this option is does not hold.

B. Common factor was factored correctly from group 1. So this option does not hold.

C. Common factor was not factored correctly from group 2. So this option holds and is correct. Thus we choose this option as correct answer.

D. There is a mistake. So this option is also not correct.

4 0
3 years ago
Pleassssssssssssse answer quick!!!
enyata [817]
To find it, set y equal to zero and find the value of x.
0=7.5x-5
5=7.5x
5/7.5=x
2/3=x
It crosses the x axis at the point: (2/3,0)
5 0
3 years ago
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