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amid [387]
3 years ago
8

20 POINTS !!!!!!!

Mathematics
1 answer:
ehidna [41]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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875 rounded to nearest ten
velikii [3]
880
Underline the number in the tens place
look to the right
if number is greater than 5
add 1 to the underlined number
leave the numbers behind the underlined number zero
4 0
3 years ago
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Question is attached, ill mark brainliest
Alborosie

Answer:

w=7

Step-by-step explanation:

3w+4w=49

7w=49

w=49/7

w=7

4 0
3 years ago
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How do you do this? Please give an example to #1 and explain thoroughly please. I have asked multiple times and gotten answers I
liberstina [14]

Answer:

y=2x

Step-by-step explanation:

y = kx is the format of the graph we are looking for (as told in the instructions) where k is the variable we are supposed to find (like y = x, y=2x, y=3x, etc)

Note that as x increases by 1, y increases by 2. We can see that by writing a table of the points of points that the line given intersects (picture below). We can see that by the values of the x-axis and the y-axis. Why does this happen? This is because y =2x for each value of x. We notice that in our table.

Therefore, the equation is y=2x. I hope this helps! If you still have questions, ask me in the comments!

4 0
3 years ago
Michelle is 7 years older than her sister Joan, and Joan is 3 years younger than their brother Ryan. If the sum of their ages is
Zielflug [23.3K]

Answer:

(C) 18

Step-by-step explanation:

We can create a systems of equations. Assuming m is Michelle's age, j is Joan's age, and r is Ryan's age, the equations are:

m = j + 7

j = r-3

m+j+r = 64

We can use substitution, since we know the "values" of m and j.

(j+7)+(r-3)+r = 64\\(j+7)+(2r-3)=64\\2r + j + 4 = 64\\2r + j = 60\\\\

r = 21, j = 18

So we know that Joan is 18 years old.

Hope this helped!

8 0
3 years ago
Evaluate 12. ( 4^-2/4^-4) <br> A 1/4 <br> B 3/4<br> C 16 <br> D 192
alisha [4.7K]

Answer:

16

Step-by-step explanation:

4^{-2} /4^{-4}\\=0.0625/0.0039\\=16

4 0
2 years ago
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