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MAXImum [283]
3 years ago
13

Which property justifies that 42 - 37= 42-30+42-7?​

Mathematics
2 answers:
Sladkaya [172]3 years ago
7 0

Answer: distributive property

Step-by-step explanation: This answer may not be right but you never know!

Arada [10]3 years ago
4 0

Answer:

i think it is 54

Step-by-step explanation:

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A farmer water 3/8 of a field what percentage is equivalent to the fraction of the field the farmer wanted?
Aleks [24]
I believe the correct answer is: 37%
4 0
3 years ago
P(x)=2x^3-11x^2+ax-40 if x+4 is a factor of this polynomial what is the value of a
Vika [28.1K]

Answer:

a = -86.

Step-by-step explanation:

By the Factor Theorem, if x + 4 is a factor then P(-4) = 0, so:

P(-4) = 2(-4)^3 - 11(-4)^2 + a(-4)- 40 = 0

-128 - 176 - 4a - 40 = 0

-4a = 128 +176 + 40

-4a = 344

a = -86.

3 0
3 years ago
Which statement best describes a chord of a circle?
Ugo [173]
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</span></span><span> The statement  that best describes a chord of a circle is 
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so the correct option is c
hope it helps
6 0
3 years ago
EXTRA POINTS * how do you graph y=2x + 1
ahrayia [7]

Step-by-step explanation:

first u need to pick a random coordinate to substitute the X . example 0

y = 2(0) + 1

y =1 , X= 0

X= 1

y= 2(1) + 1

y= 3, X= 1

then you continue this same process and again until u have at least two points to draw a straight line. it kinda depended if u want to fill the entire graph.

3 0
3 years ago
Simplify the expression by using a double-angle formula. 2 sin 31°cos 31°
qwelly [4]

The double angle formula for the sine is

\sin(2x) = 2\sin(x)\cos(x)

The right hand side is exactly your expression, where x = 31^\circ

So, rewriting the expression from right to left, we have

2\sin(31^\circ)\cos(31^\circ) = \sin(2\cdot 31^\circ) = \sin(61^\circ)

6 0
2 years ago
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