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3 years ago

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

Mathematics

1 answer:

inysia [295]3 years ago

5 0

Answer:

Step-by-step explanation:

4z-(-3z)

4z+3z->double neg=addition

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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:

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:

#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