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Paladinen [302]
3 years ago
8

Suppose there are 20 questions on a multiple-choice test. If 25% of the answers are choice B, how many of the answers are not ch

oice B?
Mathematics
2 answers:
devlian [24]3 years ago
8 0
The rest of the answers would be 15 without answer choice B
because I did 20 times 0.25 which is 5 minus 5 from 20 and it is 15 
HOPE IT HELPED!!
drek231 [11]3 years ago
7 0
16 because 25% of 20 is 4 so 4 question were choice B. Then, I subtracted 20 by 4 and got 16. I hope that helped! :)
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A kayaker traveled 4 5/6 miles during the first hour, and 1 1/3 miles more then the next hour. How far did he travel in 2 hours
ss7ja [257]

Answer:

11 miles

Step-by-step explanation:

Given that :

Distance traveled in first hour = 4 5/6 miles

Distance traveled in the next hour = 4 5/6 + 1 1/3

Therefore, the total distance traveled in 2 hours equals :

4 5/6 miles + (4 5/6 miles + 1 1/3 miles)

29/6 + 29/6 + 4/3

L. C. M of denominator = 6

(29 + 29 + 8) / 6

= 66 / 6 miles

= 11 miles

Distance traveled in 2 hours =. 11 miles

8 0
3 years ago
Choose the abbreviation of the postulate or theorem that supports the conclusion that the triangles are congruent.
Ber [7]

Answer:

Option D.

LA Theorem or Postulates

Explanation:

LA theorem or postulates is leg-acute states that if the leg and an acute angle of one right triangle are congruent to the corresponding leg and acute angle of another right triangle, then the triangles are congruent.

In \triangle ACB and  \triangle DFC

\angle C =\angle F = 90^{\circ}             [Given]

\angle B = \angle E   [Acute angle]      [Given]

BC=EF        [Given]

By LA theorems or postulates,

\triangle ACB \cong \triangle DFE

Therefore, LA theorems or postulates support the conclusion that the triangles are congruent.


     

8 0
3 years ago
Read 2 more answers
The shape on the left is transformed to the shape on the right. Figure A B C D is rotated to form figure A prime B prime C prime
kotegsom [21]

Answer:

A

Step-by-step explanation:

I did the test and it is the only one that makes sense

7 0
3 years ago
Read 2 more answers
Sammy has x flavors of candies with which to make goody bags for Frank's birthday party. Sammy tosses out y flavors, because he
harkovskaia [24]

Answer:

^{(x-y)}C_{10}=\frac{(x-y)!}{10! \times (x-y-10)!}

Step-by-step explanation:

Total flavors Sammy initially had = x

Number of flavors Sammy throw away = y

After throwing away y flavors, the number of flavors Sammy will be left with = x - y

He needs to make 10-flavor bags from these (x - y) flavors. In order words he needs to chose 10 flavors for each bag from(x - y) flavors. The order of selection is not important here, so this is a problem of combinations. Also since we have to make selections or small groups, this also indicates that we have to use combinations.

So we need to make combinations of 10 flavors from a total of (x - y) flavors. This can be represented as ^{(x-y)}C_{10}

The formula for combinations is:

^{n}C_{r}=\frac{n!}{r!(n-r)!}

Using the values in this formula, we get:

^{(x-y)}C_{10}=\frac{(x-y)!}{10! \times (x-y-10)!}

7 0
3 years ago
Penny reads 13 pages in 1/3 hour. What is the unit rate for pages per​ hour? For hours per​ page?
Free_Kalibri [48]
39 pages per hour
13x3=39
8 0
2 years ago
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