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3 years ago

Which of the following is an algebraic expression that represents the phrase X increased by 20

Mathematics

1 answer:

iren2701 [21]3 years ago

5 0

Answer:

The expression means that X+20

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4x^2 +3x-11y+17

masha68 [24]

Answer:

1) 4x^2, 3x, -11y, 17 (4 terms)

2) 4, 3, -11, 17 (4 coefficients)

3) none

Step-by-step explanation:

3 0

3 years ago

Weapon of math destruction trig. day 1

ivolga24 [154]

The questions are illustrations of trigonometry ratios and right triangles

The value of x is 11.8310
The tree is 23.3154 feet tall
The depth of the sub is 376.7770 meters

Trigonometry ratio

Trigonometry ratios are very useful in determining the measure of angles, and the side lengths of a right triangle.

<h3>Question 1</h3>

The value of x is calculated using the following sine trigonometry ratio

$\sin(25) =\frac{5}{x}$

Make x the subject

$x =\frac{5}{\sin(25)}$

This gives

$x =11.8310$

Hence, the value of x is 11.8310

<h3>Question 2</h3>

This question is illustrated by the first diagram in the attached figure

The height (h) of the tree is calculated using the following tangent trigonometry ratio

$\tan(25) =\frac{h}{50}$

Make h the subject

$h = 50 \times \tan(25)$

This gives

$h = 23.3154$

Hence, the tree is 23.3154 feet tall

<h3>Question 3</h3>

This question is illustrated by the second diagram in the attached figure

The depth (h) of the sub is calculated using the following tangent trigonometry ratio

$\tan(37) =\frac{h}{500}$

Make h the subject

$h = 500 \times \tan(37)$

This gives

$h = 376.7770$

Hence, the depth of the sub is 376.7770 meters

Read more about trigonometry ratios at:

brainly.com/question/6241673

8 0

3 years ago

.Need help please......

astraxan [27]

The answer to f(x) 5x/2x-6 is 3

7 0

3 years ago

Marcus has three random samples of the same size from a population of 700 people. In one sample, 53% of people have a library ca

Lapatulllka [165]

Answer:

343

Step-by-step explanation:

Finding? How many people with a library card should he expect in the population?

Important? Population = 700. Sample 1= 53%. Sample 2 = 51%. Sample 3 = 43%.

How? Average the 3 samples percentages together. The percent sign tells us what the sample size is (% = out of 100). Set up the proportions for library card to sample size and then library card to population. Cross multiply.

5 0

2 years ago

A boat travels 496 miles in 124 hours ( with a constant speed ). How much time will it take traveling 440 miles?

Alla [95]

Answer: 110 hrs

Step-by-step explanation:

-To figure out the amount of time, you first need to have this:

$\frac{496}{124} =\frac{440}{x}$

-Then, you cross multiply:

$496$ × $x$ = $496x$

$124$ × $440$ = $54560$

$496x = 54560$

-Divide both sides by $496$ :

$\frac{496x}{496} =\frac{54560}{496}$

$x=110$

-Result:

$110$

8 0

4 years ago

Read 2 more answers