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Serjik [45]
3 years ago
5

Expand 2x(5x-2) Help please ?

Mathematics
2 answers:
Anit [1.1K]3 years ago
5 0

Answer: 10x^2 - 4x

Step-by-step explanation:

To expand, you are not simplifying, so multiplying out is the answer here. To do this, use the distributive property. The distributive property in this case means that if you are multiplying one number by a whole expression inside parenthesis, multiply the one number by each term in the expression:

2x(5x - 2)

= 2x(5x) + 2x(-2)

= 10x^2 - 4x

alina1380 [7]3 years ago
3 0

Answer:

10x²-4x

Step-by-step explanation:

2x(5x-2)

clearing brackets by multiplying

=10x²-4x

i hope it will help you

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circle a has a radius of 7 and arcs rc cs and sm are congruent to the nearest hundereth what is the length of arc rc
oksian1 [2.3K]
The complete question in the attached figure

we know that
[arcs rc +arc cs arc sm]---------------> they take up half a circle-------->180°
<span> they are all congruent
so
divide 180 by 3 ----------------> 180/3=60</span>°


Find the length of arc rc=60°<span>

if 360</span>°----------------> (2*pi*7) length of circumference 
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<span>X=60*2*pi*7/360------------> 7.327 units

the answer is
</span>the length of arc rc= <span>7.33 units

</span>

3 0
3 years ago
How many lines are determined by two points? <br><br> 0 <br><br> 1 <br><br> 2 <br><br> infinite
Elena L [17]
1 line, because it’s between 2 points
3 0
3 years ago
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Tina wants to save money for school.Tina invests $1,000 in an account that pays an interest rate of 6.75%. How many years will i
shepuryov [24]
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Step by step explanation:
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5 0
3 years ago
How to Simplify. (–21 × 3) + (15 ÷ –3)
vladimir2022 [97]

Answer:

-68 is your answer

Step-by-step explanation:

Remember to follow PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)

First, solve each parenthesis

(-21 x 3) = -63

(15/-3) = -5

Next, add

(-63) + (-5) = -63 - 5 = -68

-68 is your answer

~

5 0
3 years ago
Please help me its do tomorrow
PolarNik [594]
2x+3 + 3x-4 + 2x+3 + 3x-4 = 78
10x -2 = 78
10x = 80
x=8

deck is 2(8)+3 by 3(8)-4, or 19 by 20
3 0
3 years ago
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