Please help me answer this

Write an expression that is equivalent to -2/5(15 - 20d +50) Explain please!:)

valina [46]

Answer:

-26 + 4/5d

Step-by-step explanation:

-2/5 ( 15 - 2d + 50)

= -2/5 ( 65 - 2d)

= -2/5 * 65 - (-2/5) * 2d

= -26 - (-4/5d)

= -26 + 4/5d

3 0

2 years ago

If the sum of the measures of the interior angles of a polygon is twice the sum of its exterior angles, how many sides does it h

alukav5142 [94]

The measure of angle KJM is 108°.

4 0

2 years ago

The line plot shows the number of miles Scarlet walked each day last week. What is the total number of miles Scarlet walked last

AveGali [126]

12 1/2 miles that the answer I'm probably late

5 0

2 years ago

Read 2 more answers

8 freshmen, 9 sophomores, 9 juniors, and 7 seniors are eligible to be on a committee.

loris [4]

Answer: 11113200

Step-by-step explanation:

We know that , the number of combination of choosing r things from n things is given by :-

$^nC_r=\dfrac{n!}{r!(n-r)!}$

Then , the number of ways to choose a dancing committee if it is to consist of 4 freshmen, 5 sophomores, 2 juniors, and 3 seniors :-

$^8C_4\times ^9C_5\times^9C_2\times^7C_3$

$=\dfrac{8!}{(8-4)!4!}\times\dfrac{9!}{(9-5)!5!}\times\dfrac{9!}{(9-2)!2!}\times\dfrac{7!}{3!(7-3)!}\\\\ =\dfrac{8\times7\times6\times5\times4!}{4!4!}\times\dfrac{9\times8\times7\times6\times5!}{4!5!}\times\dfrac{9\times8\times7!}{7!2!}\times\dfrac{7\times6\times5\times4!}{3!4!}\\\\=11113200$

∴ The number of ways to choose a dancing committee if it is to consist of 4 freshmen, 5 sophomores, 2 juniors, and 3 seniors = 11113200

6 0

2 years ago

145-38-16-19+835-52132-95一 ech 266-104 276-779-

Keith_Richards [23]

Answer:

36

Step-by-step explanation:

4 0

2 years ago