3 years ago

Which of the following is the value of 2x' +5x+9 when x =10?

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

Answer:

The correct answer is: 259.

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An ice sculpture is melting from the heat. it's height changes by -2/25 every hour, what will it be after 5 hours?

madreJ [45]

Answer:

Height will have changed by -2/5

Step-by-step explanation:

change in height = (change in height/hour) × hours

= (-2/25) × 5 = -2/5

7 0

3 years ago

Josephine has a rectangular garden with an area of 2x2 + x – 6 square feet. A rectangle labeled 2 x squared + x minus 6 Which ex

GalinKa [24]

Answer:

2x^2 + x - 6 = rectangular garden: length = 2x – 3 feet; width = x + 2 feet

Step-by-step explanation:

(2x - 3)(x + 2) = 2x^2 + x - 6 =

2x^2 + 4x - 3x - 6 = 2x^2 + x - 6 =

2x^2 + x - 6

You get the original equation from the two sides multiplied. :)

Hope this helps, have a good day.

7 0

2 years ago

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Margaret bought 40 ounces of bananas for $5.00. How much did Robert pay for 12 ounces?

Brrunno [24]

It’s 57.23 dhe paided for

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2 years ago

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What is the slope of the line through the points (-2, -1) and (4, 3)?

Natalka [10]

Answer:

#2 option: $\frac{2}{3}$

Step-by-step explanation:

$slope=\frac{rise}{run} =\frac{y^2-y^1}{x^2-x^1}$

$\frac{3-(-1)}{4-(-2)}=\frac{-4}{-6} =\frac{-2}{-3} =\frac{2}{3}$

= $\frac{2}{3}$

8 0

2 years ago

The equation cos−1 = x can be used to determine the measure of angle BAC.

Sergio [31]

we know that

in the right triangle ABC

the value of cosine of angle x is equal to

$cos(x)=\frac{AC}{AB}$

we have

$AC=3.4\ cm\\AB=10\ cm$

substitute the values

$cos(x)=\frac{3.4}{10}=0.34$

Find the measure of angle x

$x=cos(x)^{-1} =arc\ cos(0.34)=70.12\°$

Round to the nearest whole degree

$x=70\°$

therefore

the answer is

$70\°$

5 0

3 years ago

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