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2 years ago

Find the area of a traingle given that the base is 19.5cm and height is 8 4/5cm.

Mathematics

1 answer:

Phoenix [80]2 years ago

3 0

Answer:

85.6cm

Step-by-step explanation:

Area of a triangle =1/2*b*h

Where base=19.5cm while the height is 8 4/5 = 8.8

Area = 1/2 * 19.5cm * 8.8cm

Area = 171.6cm/2

Area=85.6cm

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3(q−7)=27 need help plzz 1st peep gets brainlest

ANTONII [103]

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▹ Answer

▹ Step-by-Step Explanation

3(q - 7) = 27

3q - 21 = 27

Add 21 to both sides:

21 + 21 = na

27 + 21 = 48

3q = 48

Divide both sides by 3:

3/3 = q

48/3 = 16

q = 16

Hope this helps!

CloutAnswers ❁

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8 0

3 years ago

Read 2 more answers

If f(x)=x-5, then match each of the following.

almond37 [142]

Answer:

more than likely its

f(1) -5

Step-by-step explanation:

6 0

2 years ago

Help with this math question

Art [367]

Answer: option J: 128 joules

Explanation:

1) From the table you try to find which relation best fits the data.

2) Your best first assumption is that the data may fit a proportional relation.

3) To prove that you find the ratio of Energy ouput to Amount of chemicals.

Doing that you find:
20 32 48 60
----- = ------- = ------ = ------ = 4
5 8 12 15

4) Then you have found a direct relation whose ratio is 4 joules / mol. So, you can apply that constant to the number of moles given:

Energy = 4 joules / mol × 32 mol = 128 joules

5 0

3 years ago

susan bought a calculator for $120. She had to pay a sales tax of 10% on the price. How much change would she receive from $140?

guapka [62]

Well for starters 10% of 120$ is 12$. 120+12=134...

This means 140 - 134=6

Answer: $6 of change

5 0

2 years ago

A store sells Brazilian coffee for $10 per lb. and Columbian coffee for $14 per lb. If the store decides to make a 150-lb. blend

Artemon [7]

Answer:

The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

Step-by-step explanation:

Let "b" be the amount of Brazilian coffee, in pounds, required for the blend and "c" the amount of Colombian coffee required, in pounds.

Since there are two unknown variables a two-equation system is needed to solve the problem, we can set up one equation for weight and another for price as follows:

$b+c=150\\10*b+14*c=11*150$

Solve for "c" by multiplying the first equation by -10 and adding it to the second one:

$b+c=150\\10b+14c -10b-10c=11*150 -(10*150)\\4c=150\\c = 37.5$

Now, solve for b by replacing the value obtained into the first equation

$b+c=150\\b= 150 - 37.5\\b=112.5$

The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

6 0

2 years ago