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3 years ago

What is the length of the base of a triangle with height 20 cm and area 150 cm2?

Mathematics

2 answers:

Eva8 [605]3 years ago

7 0

The base would be 15cm for your triangle.

RSB [31]3 years ago

4 0

For you: Area = 150 and height = 20

Plugging those into the formula, you get
Multiply .5 and 20:
To get base by itself, divide by 10 on both sides:

The base is 15 cm.

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nirvana33 [79]

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3 years ago

x^2+2x+7=21 the approximate value of the greatest solutoon to the equation, rounded to the nearest hundreth

daser333 [38]

9514 1404 393

Answer:

x ≈ 2.87

Step-by-step explanation:

We can subtract 6 to put the equation into a form easily solved.

x^2 +2x +1 = 15

(x +1)^2 = 15

x +1 = √15 . . . . . for the greatest solution, we only need the positive root

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4 0

2 years ago

The solution set of 2-3x/4-8=3x/4

deff fn [24]

Step-by-step explanation:

$\\ \tt{:}\leadsto \frac{2 - 3x}{4 - 8} = \frac{3x}{4} \\ \\ \tt{:}\leadsto 4(2 - 3x) = 3x(4 - 8) \\ \\ \tt{:}\leadsto 8 - 12x = 3x( - 4) \\ \\ \tt{:}\leadsto 8 - 2x = - 12x \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt{:}\leadsto 8 = - 12x + 2x \\ \\ \tt{:}\leadsto 8 = - 10x \\ \\ \tt{:}\leadsto x = \frac{ - 10}{8} \\ \\ \tt{:}\leadsto x = \frac{ - 5}{4}$

6 0

3 years ago

Read 2 more answers

Whats 1/5 - 1/7 please can you tell me how to work it out thanks

Andrej [43]

Convert the fractions so they both have the same denominator (bottom part of the fraction)

1/5 = 7/35

This is because 5*7=35, so 1*7=7

1/7 = 5/35

This is because 7*5=35, so 1*5 =5

Then subtract the top numbers to get the answer:

$\frac{7}{35}-\frac{5}{35} = \frac{2}{35}$

3 0

3 years ago

Read 2 more answers

Find the difference: -10 - (-6) = A. -4 B. -16 C. +4 D. +16

Tatiana [17]

Answer:

-10-(-6) = -10+6 = -4; A

Step-by-step explanation:

3 0

3 years ago