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lianna [129]
3 years ago
12

A 13 Ft ladder is leaning up against a building, with the base of the ladder 2 feet from the building. How high up on the buildi

ng will the top of the ladder reach?
Mathematics
1 answer:
Lelechka [254]3 years ago
6 0

Visualize the image in your mind and you can see that it forms a right angled triangle with a base,altitude and hypotenuse

base=2 feet

hypotenuse(ladder)=13 ft

We need to find the altitude,

By applying pythagoras theorem,

base square+altitude square=hypotenuse square

Take altitude as x

2 square+x square=13 square

4+x square=169

x square=169-4

x square=165

x= root of 165

x=12.8 feet(approx.)

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Novosadov [1.4K]

Answer: 121.836

Step-by-step explanation: So the first thing you need to do is:

31.24        

x3.90           you need to put the zero there because the decimal points would need to match up.

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Once you do that just put the decimal down. Like this:

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____           Once you do that just ignore the decimal and multiply.

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7 0
3 years ago
How do I graph an equation?
Elanso [62]

Answer:

1. Locate the y-intercept on the graph and plot the point.

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3. Draw the line that connects the two points.

5 0
3 years ago
Tristan is working two summer jobs, making $7 per hour babysitting and $19 per hour lifeguarding. Tristan must earn at least $21
rodikova [14]

Answer: 7bb +19 ll ≥210

Step-by-step explanation:

Hi, to answer this question we have to write an inequality:

The product of the number of hours he works babysitting (bb) and the amount he earns per hour (7); plus The product of the number of hours he works lifeguarding (ll) and the amount he earns per hour 19; must be higher or equal to the amount he must earn this week (210)

Mathematically speaking:

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6 0
3 years ago
Hannah has a part-time job making holiday wreaths. This week, she made x medium wreaths, twice as many large wreaths as medium w
Lilit [14]

Answer:

Total number of wreaths = 3.5 wreaths

Step-by-step explanation:

Given:

Number of medium wreaths = x

Number of larger wreaths = 2[Number of medium wreaths]

Number of small wreaths = [1/2][Number of medium wreaths]

Find:

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Computation:

Total number of wreaths = Number of medium wreaths + Number of large wreaths + Number of small wreaths

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Total number of wreaths = x + 2x + 0.5x

Total number of wreaths = 3.5 wreaths

3 0
3 years ago
Item 32 On three 150-point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What per
stira [4]
97.2% on the final.
Find the total amount of points needed to get a 93%. 150+150+150+250 = 700 total points. 700*.93 = 651 total points needed to get 93%. find the points received from the other quizzes and subtract the sum from 651 to find how many points need to be scored on the final.
150*.88=132 (test 1)
150*.94=141 (test 2)
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132+141+135= 408

651-408 = 243 points to score on the final exam.
243/250 =.972 or 97.2%
3 0
3 years ago
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