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2 years ago

Evaluate u + xy, for u = 18, x = 10, and y = 8.

Mathematics

2 answers:

Svetlanka [38]2 years ago

6 0

Answer:

the answer is 98

Step-by-step explanation:

u+xy

18+10*8

18+80

Natalka [10]2 years ago

5 0

Answer:

Step-by-step explanation:

u + xy

u = 18

x = 10

y =8

18 + 10*8 = 18 +80

= 98

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Look at the problems 2.3×3.68 and 23×368. How are they similar? Which problem has a greater product?

Margarita [4]

Here is your answer:

1. These equations are similar because they "both share the same numbers but one is a decimal and the other is a whole number."

2. You have to solve each equation in order to determine which number is greater:

$2.3\times 3.68$
$2.3 \times 3.68 = 8.464$
$= 8.464$

And:

$23 \times 368 =$
$23 \times 368 = 8464$
$= 8464$

Finally:

$8.464 < 8464$

Therefore "8,464 is greater than 8.464."

Hope this helps!

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3 years ago

Please help me: A cereal company fills boxes with 16 ounces of cereal. The acceptable percent error in filling a box is 2.5%. Fi

bagirrra123 [75]

16.4 would be the greatest and 15.6 would be the least due to 2.5% equaling 0.4 and adding and subtracting it from 16.

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3 years ago

What is the equation of the parabola in vertex form with vertex (2,-4) and directrix y=-6

Pachacha [2.7K]

Answer:

$y=\dfrac{1}{8}(x-2)^2-4$

Step-by-step explanation:

The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

$(x-x_0)^2=2px(y-y_0),$

where $(x_0,y_0)$ is the vertex of parabola and p is parabola's parameter.

By the definition, $\frac{p}{2}$ is the distance from the vertex to the directrix, so

$\dfrac{p}{2}=2\Rightarrow p=4$

Hence, the equation of parabola is

$(x-2)^2=8(y+4)$

See attached diagram for the graph of parabola and its directrix.

In vertex form this equation is

$y=\dfrac{1}{8}(x-2)^2-4$

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3 years ago

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ratelena [41]

I think it is
A. Always

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2 years ago

Select the correct answer from the drop-down menu. A whole number is 6 more than 2 times another number. The sum of the two numb

olya-2409 [2.1K]

Answer:

$x = \{13,14\}$

Step-by-step explanation:

Given

$x + 2x + 6 < 50$

Required

True values of x

We have:

$x + 2x + 6 < 50\\$

$3x + 6 < 50$

Collect like terms

$3x < 50-6$

$3x < 44$

Divide both sides by 3

$x < 44/3$

$x < 14.67$

This means that x has a value lesser than 14.67.

Hence, the valid values are:

$x = \{13,14\}$

7 0

2 years ago