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Mrrafil [7]
4 years ago
14

Can anyone plz help me

Mathematics
1 answer:
faltersainse [42]4 years ago
3 0
7.5/18=15/x
Cross multiply
7.5x/270
Divide both sides by 7.5 to get x alonex=36
Hope that helps! :)

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Quickly compute the following differences of squares. (a). 64^2 − 14^2 (b). 112^2 − 88^2 (c). 785^2 − 215^2
VikaD [51]

Answer:

(a) 3900

(b) 4800

(c) 570000

Step-by-step explanation:

We have given

(a) 64^2-14^2

We know the algebraic equationa^2-b^2=(a+b)(a-b)

So 64^2-14^2=(64+14)(64-14)=3900

(b) We know the algebraic equationa^2-b^2=(a+b)(a-b)

112^-88^2=(112+88)(112-88)=4800

(c) We know the algebraic equationa^2-b^2=(a+b)(a-b)

785^2-215^2=(785+215)(785-215)=570000

5 0
3 years ago
For each of the terms below, give a brief definition.
irinina [24]

Answer:

term

a word or phrase used to describe a thing

Coefficient

a number for constant quantity

constant

occurring continuously over a period of time

Algebraic expression

In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations.

5 0
4 years ago
There a 3 liters of orange juice at a school party 10 students want to drink all of the orange juice and want to get exactly the
Dominik [7]

Answer:

3000÷10=300

Step-by-step explanation:

3 litres is equal to 3000 millilitres so divide 3000 by 10 as there are 10 students.

7 0
3 years ago
Read 2 more answers
I NEED IT KNOW PLEASEEE
zzz [600]

Answer:

360

Step-by-step explanation:

5 0
3 years ago
School with 500 students has 30 math teachers. How many math teachers are needed for 750 students?
klemol [59]
Assuming a direct proportional variation.

\bf \begin{array}{ccll}
students&teachers\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
500&30\\
750&t
\end{array}\implies \cfrac{500}{750}=\cfrac{30}{t}\implies t=\cfrac{750\cdot 30}{500}\implies t=45
7 0
3 years ago
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