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2 years ago

Find the area of a triangle with a base of 8 cm and a height of 10 cm

Mathematics

1 answer:

Alexandra [31]2 years ago

6 0

Answer:

Step-by-step explanation:

The formula of an area of a triangle:

$A_\triangle=\dfrac{b\cdot h}{2}$

b - base

h - height

We have b = 8cm, h = 10cm.

Substitute:

$A=\dfrac{(8)(10)}{2}=\dfrac{80}{2}=40\ (cm^2)$

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Given f(x) = 3x + 1, solve for x when f(x) = 7.

irakobra [83]

Answer:

f(7) = 22 or x =2

Step-by-step explanation:

f(x) = 3x + 1
f(7) = 3(7) + 1
f(7) = 21 + 1
f(7) = 22

Or if the equation meant it like this:

f(x) = 3x + 1
7 = 3x + 1
6 = 3x
2 = x

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3 years ago

Read 2 more answers

Carlos is driving on a straight section of highway from Ashford to Lincoln. Ashford is at mile marker 333 and Lincoln is at mile

Arte-miy333 [17]

Distance between the two cities:

453 - 333 = 120 miles.

Rest area is 2/3 of the way:

120 x 2/3 = 240/3 = 80 miles.

Divide the miles to the rest stop by his speed:

80 miles/ 60 miles per hour = 1 and 1/3 hours as a fraction. 1.3333 as a decimal( round as needed.

( 1 hour and 20 minutes)

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3 years ago

Evaluate. X/4-y^2 + 3 1/4 x= if 12 and y=3

Varvara68 [4.7K]

Answer:

− 17/4 or −4.25

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2 years ago

Reducing Fractions 30/90

fgiga [73]

Answer: 1/3

Divide

30/90÷30/30=1/3

Since we are simplifying fractions we divide the numerator and the denominator by a number the fraction can go into.

We could use 10 then divide by 3. You can also just divide by 30 and get the answer.

Let's try dividing by 10 then 3!

30/90÷10/10=3/9

3/9÷3/3=1/3

As you can see we still get 1/3 when we divide by 3. Even tho you have to divide twice you still get 1/3. That's all that matters.

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3 years ago

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Look at the attached picture⤴

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3 years ago