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devlian [24]
2 years ago
6

For the expression 28-28z to have a negative​ value, what must be true about the value of z​?

Mathematics
1 answer:
SpyIntel [72]2 years ago
7 0

Answer:

z is greater or equal than 1

Step-by-step explanation:

28-28z<=0

28<=28z

z>=1

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How to write an equation and use The Distributive Property .
Airida [17]
<h2>Answer</h2>

Distributive Property

The distributive property states that when a factor is multiplied by the sum of two numbers, you can multiply each of the two numbers by that factor and then add them.

<h2>Example</h2><h3>Equation </h3>

10(x + 2) = 45

Apply the distributive property to the left side of the equation by multiplying

two numbers inside the parentheses by 10

10(x) + 10(2) = 45

Now add them

10x + 20 = 45

Rearrange the like terms

10x = 45 -20

10x = 25

x = 25/10

x = 2.5

7 0
3 years ago
4(n-1)+2 = -23 +7n
liubo4ka [24]

Answer:

<h2><em><u>n</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>7</u></em></h2>

Step-by-step explanation:

4(n-1)+2 = -23 +7n

=> 4n - 4 + 2 = - 23 + 7n

=> 23 - 4 + 2 = 7n - 4n

=> 21 = 3n

=  > n =  \frac{21}{3}

=> <em><u>n</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>7</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>

6 0
3 years ago
Raju bought seven notebooks of two hundred pages and five of hundred pages, for 107 rupees. Joseph bought five notebooks of two
olga nikolaevna [1]

Answer:

Large books = 11

Small books = 6

Step-by-step explanation:

7x + 5y = 107

7x = 107 - 5y

x = 107/7 - 5y/7

5x + 7y = 97

5 (107/7 - 5y/7) + 7y = 97

535/7 - 25y/7 + 7y = 97

535/7 + 24y/7 = 97

535 + 24y = 679

24y = 679 - 535

y = 144/24 = 6: So x =

7x + 5(6) = 107

7x = 107-30

x = 77-7 = 11

8 0
3 years ago
Picture of raadius is 10 cm​
ss7ja [257]

Step-by-step explanation:

And,what is the question so that i can help u??

6 0
3 years ago
a pediatrician measures a 1year old , he is 37 and one fourth inches tall. at birth he was 18 and three fourths inches tall. how
Anna71 [15]

he grew 18.25 or 18 1/4 depending on how your teacher wants you to answer. hope it helps!

3 0
3 years ago
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