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mart [117]
3 years ago
12

Which of the expressions below are equal to 3x + 9y + 15? Select all that apply.

Mathematics
1 answer:
devlian [24]3 years ago
5 0
Answer:
C) 3(x + 3y + 5)
D) 3x + 3(3y +5)
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The image below is a triangle drawn inside a circle with center O: Which of the following expressions shows the area, in square
s344n2d4d5 [400]
We know that
[area of a circle ]=pi*r²
diameter=4 in
 r=4 in/2-----> 2 in

so
area=pi*2²-----> area of the circle=4*pi in²

the answer is
the area, in square inches, of the circle is <span>3.14 • 2²</span>
8 0
2 years ago
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Find the greatest common factor of 8, 6, and 10.<br> z
devlian [24]
2 Factors of 8: 1, 2, 4, 8 Factors of 6: 1, 2, 3, 6 Factors of 10: 1, 2, 5, 10
3 0
3 years ago
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−1 3/5÷−5/6​=? Please help!
zavuch27 [327]

- 1 3/5= -8/5 ( Multiply the denominator and whole number ) -1*5= -5 -3= -8

-8/5 ÷ -5/6

-8/5*-6/5 ( whenever dividing flip over the second fraction )

=48/25 ( whenever multiplying - negative and - negative = + positive number

48/25= 1 23/25

Answer :48/25 or 1 23/25

8 0
3 years ago
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How many different arrangements can be made with ten pieces of silverware laid in a row if three are identical spoons, four are
LuckyWell [14K]

10 pieces of silverware laid in a row if 3 are identical spoons, 4 are identical forks, and 3 are identical knifes

The arrangement of 'm' objects on which 'n' objects are of same kind is \frac{m!}{n!}

Given: 10 pieces of silverware so its 10!

3 are identical spoons so its 3!

4 are identical forks so its 4!

and 3 are identical knifes so its 3!

Arrangements made = \frac{10!}{3!*4!*3!} = 4200




4 0
3 years ago
Question set 2: Many species of terrestrial tree frogs that hibernate at or near the ground surface can survive prolonged exposu
joja [24]

Answer:

0.86

Step-by-step explanation:

The z-score we need to make the comparison is given by

\bf z=\frac{-2.05-(-2)}{\sigma/\sqrt{n}}

where

\bf \sigma= the standard deviation established in the study

n = the sample size

\bf z=\frac{-2.05-(-2)}{0.3/\sqrt{42}}=-1.0801

and for the Normal distribution N(0,1) we want to find  

<em>P(X > -1.0801) </em>

By using a spreadsheet or the table attached, we find that

P(X > -1.0801) = 0.86

(See picture attached)

7 0
3 years ago
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