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3 years ago

Zak uses repeated subtration to find 48\8 .How many groups of 8 doeszak subtract

Mathematics

1 answer:

Lyrx [107]3 years ago

4 0

The answer would be 6 the easy way is to divide 48 by 8

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Complete the square to factor X^2 +10X=-8

ella [17]

Answer: $x=\sqrt{17}-5$ and $x = -\sqrt{17}-5$

Step-by-step explanation:

Alright, lets get started.

The given equation is :

$x^{2} +10x = -8$

Adding 8 in both sides, it will become

$x^{2} +10x + 8 = -8 +8$

$x^{2} +10x + 8 = 0$

To make it perfect square, we need to add 25 and subtract 25

$x^{2} +10x + 8 +25-25= 0$

$x^2+10x+25+8-25=0$

$(x+5)^2+8-25=0$

$(x+5)^2-17=0$

Adding 17 in both sides

$(x+5)^2=17$

taking square root

$x+5=\sqrt{17}$

So,

$x=\sqrt{17}-5$ and $x = -\sqrt{17}-5$ .. Answer

Hope it will help :)

7 0

3 years ago

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What is the area, in square inches, of the rectangle? Show your work!!

erma4kov [3.2K]

Answer:

$\huge\boxed{\sf 7 \frac{13}{20} \ in. ^2}$

Step-by-step explanation:

Length of the rectangle = $\displaystyle 2 \frac{1}{4} = \frac{9}{4} \ in.$

Width of the rectangle = $\displaystyle 3 \frac{2}{5} = \frac{17}{5} \ in.$

<u>Area of the rectangle:</u>

= Length × Width

$\displaystyle = \frac{9}{4} \times \frac{17}{5} \\\\= \frac{9 \times 17}{4 \times 5} \\\\= \frac{153}{20} \\\\= 7 \frac{13}{20} \ in.^2\\\\\rule[225]{225}{2}$

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2 years ago

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The cafeteria staff made 860 sandwiches. 65% of the sandwiches were made with white bread and the rest were made with whole whea

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Answer:

301 sandwiches were made with whole wheat bread

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2 years ago

BRAINLIEST IF CORRECT !!!! in ABC m

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Answer:

b i think im not sure

Step-by-step explanation:

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3 years ago

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When the light turns yellow, should you stop or go through it? The article "Evaluation of Driver Behavior in Type II Dilemma Zon

Natasha2012 [34]

Answer:

No, does not differ.

Step-by-step explanation:

Given that there are two intersections route 7 and route 62.

At the intersection of Route 7 and North Shrewsbury in Clarendon, Vermont, 154 vehicles were observed to encounter a yellow light in the indecision zone, and 21 of them ran the red light. At the intersection of Route 62 and Paine Turnpike in Berlin, Vermont, 183 vehicles entered the intersection in the indecision zone, and 20 ran the red light.

Let p1 be the first proportion and p2 the second

We want to test whether these two proportions differ

$H_0: p_1 = p_2\\H_a: p_1 \neq p_2$