What is the missing number in the data set 15,17,28,30 if the mean is 23

Answers

Answer 1

Answer: mean is add the numbers and divide the result by how many numbers there are
mean=23
1 missing number which is x
5 numbers including missing one
(15+17+28+30+x)/5=23
solve for x
multiply both sides by 5
15+17+28+30+x=115
add like terms
90+x=115
subtract 90
x=25

the missing number is 25

Answer 2

Answer: 15+17+28+30=90, if theres another number than there r 5 total numbers, 23*5=115, 115-90=25, so 25

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Jacob wants to eat 28 servings of protein each week. He eats 4 servings each day. After 3 days,how many servings of protein does Jacob have left to eat in order to meet his goal? Write the equation and solve good luck

Answers

16 proteins left ...............

well i think in my own way that you subtract 28-4=24 but if i am wrong i am sorry but i hope that helps

Algebra tiles to prove that 4 + 8x and 4(2x+1)

Answers

not sure what algebra tiles are

not sure how to absolutely prove
I can prove it works at least most of the time by subsitute ing number for x

remember that 0,1,2 have special properties and are not very good for subsituting so
try 4
4+8(4)=4(2(4)+1)
true or false?
4+8(4)=4(2(4)+1)
multipily
4+32=4(8+1)
36=4(9)
36=36
this is treu at least for the number 4
another way is to believe in the distributive property where
a(b+c)=ab+ac so then
4(2x+1)=4(2x)+4(1)=8x+4=4+8x

4 + 8x

Now, see if the simplified form of 4(2x + 1) is equal to that.

4*2x = 8x
4*1 = 4

4 + 8x = 4 + 8x Correct

Can someone please help me with this question!ASAP

Answers

Answer:

I can only say it is not the first one

Step-by-step explanation:

I don't really know the rest of it but I know that the first one is not correct

What is the value of the figure 8 in 1,083,096

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80,000. it easy rally we learnt this in 2nd grade

If No Digit Appears More Than Once, How Many 2-Digit Numbers Can Be Formed From The Digits 2, 3, 4, 6, And 7?? How Did You Receive Your Answer??

Answers

8, 10 Those are the digits that can be formed from that problem

A sequence of transformations which moves ΔRST onto ΔXYZ shows that ΔRST ≅ ΔXYZ. Which part of the triangles are congruent by CPCTC?

Answers

Answer:

Here's what I get

Step-by-step explanation:

CPCTC is an acronym for Corresponding Parts of Congruent Triangles are Congruent.

If ΔRST ≅ ΔXYZ then

∠R = ∠X

∠S = ∠Y

∠T = ∠Z

RS = XY

ST = YZ

RT = XZ

Final answer:

To prove ΔRST ≅ ΔXYZ, perform a sequence of transformations and apply CPCTC to identify congruent parts.

Explanation:

To prove that ΔRST ≅ ΔXYZ, we need to perform a sequence of transformations that move ΔRST onto ΔXYZ. Once the triangles are superimposed, we can use the Corresponding Parts of Congruent Triangles are Congruent (CPCTC) to identify congruent parts.

CPCTC states that if two triangles are congruent, then their corresponding parts (sides and angles) are also congruent. In this case, the parts of ΔRST that are congruent to the corresponding parts of ΔXYZ are:

Side RS is congruent to side XY
Side ST is congruent to side XZ
Angle R is congruent to angle X

Learn more about Congruent Triangles here:

brainly.com/question/31700817

#SPJ3

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