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4 years ago

Write an equivalent expression for 4(2x + 5)

Mathematics

1 answer:

oksano4ka [1.4K]4 years ago

5 0

Answer:

8x+20

Step-by-step explanation:

You can use distubetive property. Well you multiply 4 to both of the numbers. 4 times 2x equals 8x. So that will be the first part of your expression. 4 times 5 equals 20. So that will be the second part of your expression. So the answer is 8x + 20

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Evaluate the expression 3x^2+ y if x = 1 and y = -3.

elena-14-01-66 [18.8K]

3(1)^2-3= 0
Plug in the numbers because x=1 plug In 3(1)^2 and it equals 3 then subtract y which is 3-3= 0

4 0

3 years ago

What is the estimate of 35214

luda_lava [24]

Answer:

4000

Step-by-step explanation:

7 0

3 years ago

Factorise 3x^3 - 12xy^2

igomit [66]

Answer:

we can conclude that:

$3x^3\:-\:12xy^2=3x\left(x+2y\right)\left(x-2y\right)$

Step-by-step explanation:

Given the expression

$3x^3-12xy^2$

Let us factorize the expression

$3x^3-12xy^2$

Apply the exponent rule: $a^{b+c}=a^ba^c$

$3x^3\:-\:12xy^2=3xx^2-12xy^2$

Rewrite 12 as 4 · 3

$=3xx^2-4\cdot \:3xy^2$

Factor out the common term 3x

$=3x\left(x^2-4y^2\right)$

$\mathrm{Apply\:Difference\:of\:Two\:Squares\:Formula:\:}x^2-y^2=\left(x+y\right)\left(x-y\right)$

$=3x\left(x+2y\right)\left(x-2y\right)$

Therefore, we can conclude that:

$3x^3\:-\:12xy^2=3x\left(x+2y\right)\left(x-2y\right)$

8 0

3 years ago

I need the ordered pair plz

Taya2010 [7]

Answer:

$(\frac{-1}{2},-1)$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Midpoint Formula: $(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-6, 5)

Point (5, -7)

Step 2: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Substitute [MF]: $(\frac{-6+5}{2},\frac{5-7}{2})$
Add/Subtract: $(\frac{-1}{2},\frac{-2}{2})$
Divide: $(\frac{-1}{2},-1)$

4 0

3 years ago

What's the estimated to 538,000? A( 553,255 B) 897,300 c) 537,334 d)600,000

skelet666 [1.2K]

Answer:

C. 537,334

Step-by-step explanation:

It is the closest estimation towards 538,000, since 537,334 rounded to the nearest thousandth would be 538,000.

Hope this helps!

Panna

4 0

3 years ago