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2 years ago

11

Rob found 103 + 1875 = x using mental math. Use at least 3 terms from the world list to describe how Rob could find the sum.

1 answer:

arlik [135]2 years ago

6 0

Answer:

Make, sum, total

Step-by-step explanation:

There are many terms in the word list that could be used to describe how Rob had solved the sum in his head. He had made and arranged numbers vertically in his head then sum it and at last he found the total.

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19−6(−k+4) Simplify to create an equivalent expression

almond37 [142]

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$\text{Your new equation is: 6k + (-5)}\\\\\text{+ \& - = -}\text{\underline{ (positive \& negative equals negative)}}\\\\\text{The number in the center will be a negative}\\\\\boxed{\boxed{\text{Answer: 6k - 5}}}\checkmark\\\\\\\\\\\text{Good luck on your assignment and enjoy your day!}\\\\\frak{LoveYourselfFirst:)}$

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2 years ago

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If y = kx, what is the value of k if y = 20 and x = 0.4?<br> A) 5 <br> B) 8 <br> C) 9.6 <br> D) 50

mariarad [96]

Answer:

D) 50

20/0.4=50

Step-by-step explanation:

7 0

2 years ago

Factor completly 4x^2 +8x -5

DaniilM [7]

∑ Hey, jillianwagler ⊃

Answer:

$\left(2x-1\right)\left(2x+5\right)$

Step-by-step explanation:

<u><em>║Given info║:</em></u>

<em>Factor completely: </em> $4x^2 +8x -5$

<u><em>Solution~:</em></u>

<em>Breaking the expression~: </em> $\left(4x^2-2x\right)+\left(10x-5\right)$

<em>Factor out 2x from 4x² -2x : 2x(2x-1)</em>

<em>Factor out 5 from 10x - 5 : 5(2x - 1)</em>

<em>Put together: </em> $=2x\left(2x-1\right)+5\left(2x-1\right)$

Factor out 2x - 1: $=\left(2x-1\right)\left(2x+5\right)$

<u><em>xcookiex12</em></u>

<em>8/19/2022</em>

4 0

1 year ago

What is the equivalent decimal to this fraction? 10/45 0.2 0.222222222... 0.232323232323... 0.181818181818...

Ivan

Factorize the numerator and denominator, then simplify:

10/45 = (2×5)/(9×5) = 2/9

Now,

1/9 = 1/10 + 1/90

1/90 = 1/10 × 1/9 = 1/10 × (1/10 + 1/90) = 1/100 + 1/900

1/900 = 1/100 × 1/9 = 1/100 × (1/10 + 1/90) = 1/1000 + 1/9000

and so on, which is to say

1/9 = 1/10 + 1/100 + 1/1000 + …

or

1/9 = 0.111…

so that multiplying both sides by 2 gives

2/9 = 0.222…

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1 year ago

What is the solution to the system of linear equations graphed below?

olganol [36]

Answer: $(3\frac{1}{2}, -4)$

Step-by-step explanation:

The solution to the graph of a system of equations is where they intercept. Here, it is at about $(3\frac{1}{2}, -4)$ .

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3 years ago

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