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4 years ago

211 minus 87.4 decimal subtraction

Mathematics

2 answers:

Anika [276]4 years ago

8 0

The answer to the subraction problem is 123.6

Pavlova-9 [17]4 years ago

3 0

<u>211 - 87.40</u> equals 123.60.

To see if your answer is correct just <u>add 123.60 and 87.40 together</u>.

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Brianna is twice as old as James . David is four times as old as James. Brianna is 20 years younger than David. How old is David

IrinaK [193]

Answer:

David might be 40

Step-by-step explanation:

Brianna = 20 + 20 = 40 = David

James = 10 x 2 = Brianna

David = 40 - 20 = Brianna

8 0

4 years ago

Segment BD is an altitude of triangle ABC. Find the area of the triangle.

Sever21 [200]

Answer: The correct option is A, i.e., 7.5.

Explanation:

It is given that ABC is a triangle and BD is an altitude.

Since BD is an altitude, therefore the height of the triangle is BD and the base of the triangle is AC.

The distance formula to find the distance between two points is,

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

First, we find BD, where B(-1,4) and D(2,4).

$BD=\sqrt{(2+1)^2+(4-4)^2}=\sqrt{9} =3$

So, the height of the triangle is 3.

Now, we find the value of AC, where A(2,1) and C(2,6).

$AC=\sqrt{(6-1)^2+(2-2)^2}=\sqrt{25} =5$

So, the base of the triangle is 5.

The formula to find the area of a triangle is,

$A=\frac{1}{2}\times {\text{base}}\times {\text{height}}$

$A=\frac{1}{2}\times 5\times 3=\frac{15}{2}=7.5$

Therefore, the area of the triangle is 7.5 unit square and the correct option is A.

6 0

3 years ago

Read 2 more answers

Round 182.17 and 92.55 and 225.82 and 127.94 to the nearest 100

bagirrra123 [75]

200, 100, 200, and 100. if you mean HUNDRETH then they are all already to the nearest hundredth

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3 years ago

Do u want a link to ?

kumpel [21]

Answer:

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3 years ago

A sugar cookie recipe that makes 2 dozen cookies calls for 3 tablespoons of half-and-half. How much half-and-half would you need

Mariana [72]

Answer:

If 3Tbs = 2 dozen cookies (24) u would need 1.5 more Tbs to make 3 dozen cookies

To get Tbs u would take 3+1.5=4.5 Tbs

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4 years ago