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Elena L [17]
3 years ago
13

Combine these to like terms to create an equivalent expression: 4z - (-3z)

Mathematics
1 answer:
inysia [295]3 years ago
5 0

Answer:

7z

Step-by-step explanation:

4z-(-3z)

4z+3z->double neg=addition

7z

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9. Earth turns on its axis once every 24 h. How many hours does earth take to complete 2 1/4 turns
Dima020 [189]

Answer:

54

Step-by-step explanation:

24* 2.25= 54

(.25 is 1/4 in decimal form)

7 0
2 years ago
Dora is building the right square pyramid shown in the diagram.
saul85 [17]
Answer is 4 :) I hope it help you.
8 0
3 years ago
BRAINLIEST!!!
Sonbull [250]

Answer:

\sqrt{37}

Step-by-step explanation:

The distance d between a point (m , n ) and a line in the form

Ax + By + C = 0 , is calculated as

d = \frac{|Am+Bn+C|}{\sqrt{A^2+B^2} }

Here (m, n ) = (6, 2 ) and

6x - y = - 3 ( add 3 to both sides )

6x - y + 3 = 0 → A = 6, B = - 1, C = 3

d = \frac{|6(6)+-1(2)+3|}{\sqrt{6^2+(-1)^2} }

   = \frac{|36-2+3|}{\sqrt{36+1} }

   = \frac{|37|}{\sqrt{37} }

   = \frac{37}{\sqrt{37} } × \frac{\sqrt{37} }{\sqrt{37} }

   = \frac{37\sqrt{37} }{37} ← cancel 37 on numerator/ denominator

   = \sqrt{37}

7 0
3 years ago
nancy started the year with $425 in the bank and is saving $25 a week. Seamus started the year with $875 and is spending $15 a w
Goryan [66]

They will have same amount in 45 weeks.

Step-by-step explanation:

Given,

Starting amount of Nancy = $425

Per week saving = $25

Let,

x represent the number of weeks.

N(x) = 25x+425

Starting amount of Seamus = $875

Per week saving = $15

S(x) = 15x+875

For same amount;

N(x) = S(x)

25x+425=15x=875\\25x-15x=875-425\\10x=450

Dividing both sides by 10

\frac{10x}{10}=\frac{450}{10}\\x=45

They will have same amount in 45 weeks.

Keywords: function, division

Learn more about functions at:

  • brainly.com/question/9738996
  • brainly.com/question/9729310

#LearnwithBrainly

3 0
3 years ago
4x^2-5x=0 <br> Help me pls!!!!!
matrenka [14]
The answer to this is: x = 0, 5/4
8 0
3 years ago
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