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Lena [83]
4 years ago
13

A=1/2b*h for b =4 and h=3

Mathematics
1 answer:
zalisa [80]4 years ago
7 0

Answer:

1/2×4×3 =6

Step-by-step explanation:

The 1/2 will multiply the 4×3 which is 12

So therefore the answer is 1/2×6

when u reduce it u will get 6 as the answer

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Andrew is 3 times his son’s age. 10 years ago, he was 5 times his son’s age. What are their present ages? Show your work.
PSYCHO15rus [73]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

We will be using simultaneous equations to solve this problem.

Let's establish the two equations we will be using to solve the problem.

Let Andrew's current age = a

Let Andrew's son's current age = s

Equation No. 1 -

a = 3s

Equation No. 2 -

a - 10 = 5s

To begin with, we will substitute the value of ( a ) from the first equation into the second equation to solve for ( s ).

Equation No. 2 -

a - 10 = 5s

( 3s ) - 10 = 5s

3s - 5s = 10

- 2s = 10

s = 10 / - 2

s = - 5

Next we will substitute the value of ( s ) from the second equation into the first equation to solve for ( a ).

Equation No. 1 -

a = 3s

a = 3 ( - 5 )

a = - 15

FINAL ANSWER:

Therefore, the present age of Andrew is - 15 and the present age of Andrew's son's is - 5.

It isn't possible for someone to be negative years old, but this is the answer that I ibtained from the equations.

Hope this helps! :)
Have a lovely day! <3
6 0
3 years ago
13. Oscar's dog house is shaped like a tent. The slanted sides are both 5 feet
VashaNatasha [74]

Answer:

The height of the dog house = 4 feet.

Step-by-step explanation:

Given:

The shape of the dog house is like a tent.

The slant heights of the house is 5 feet.

The bottom of the house is 6 feet across.

To find the height of the dog house at its tallest point.

Solution:

On drawing the figure of the dog house in the shape of a tent, we find out that the tallest point would be at the midpoint of the bottom of the house.

Thus, we ave a right triangle, of which one leg = \frac{6\ ft}{2}=3\ ft and hypotenuse = 5\ ft

<em>Applying Pythagorean theorem to find the measure of the other leg which is the height of the house.</em>

Hypotenuse^2=Leg1^2+Leg2^2

Plugging in values.

5^2=3^2+Leg2^2

25=9+Leg2^2

Subtracting both sides by 9.

25-9=9-9+Leg2^2

16=Leg2^2

Taking square root both sides.

\sqrt{16}=\sqrt{Leg2^2}

4=Leg2

Thus, the height of the dog house = 4 feet.

6 0
4 years ago
Bill is 4 years older than Harris, who is 5 years old. How old is Bill? Plot Bill’s age on the number line.
Ahat [919]

Answer:

9

Step-by-step explanation:

5+4=9

8 0
3 years ago
Given functions f ( x ) = 1 √ x and m ( x ) = x 2 − 4 , state the domains of the following functions using interval notation.
babunello [35]

The domain of a function f(x)/m(x) = 1/√x(x² - 4) is (0, ∞) - {0, 2, -2} for other function is shown in the solution.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have:

f(x) =  1/√x

m(x) = x² - 4

Domain of f(x)/m(x):

f(x)/m(x) = (1/√x)/(x² - 4)

f(x)/m(x) = 1/√x(x² - 4)

The denominator cannot be zero:

√x(x² - 4) ≠ 0

x(x - 2)(x+2) ≠ 0

x ≠ 0, 2, -2

and x > 0

Domain of f(x)/m(x) is:   (0, ∞) - {0, 2, -2} or \:\left(0,\:2\right)\cup \left(2,\:\infty \:\right)

Domain of f(m(x)):

f(m(x)) = 1/√(x² - 4)

x² - 4 > 0

Domain: \rm \left(-\infty \:,\:-2\right)\cup \left(2,\:\infty \:\right)

Domain of m(f(x)):

= ((1/√x)² - 4)

Domain: \:\left(0,\:\infty \:\right)

Thus, the domain of a function f(x)/m(x) = 1/√x(x² - 4) is (0, ∞) - {0, 2, -2} for other function is shown in the solution.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

7 0
3 years ago
I have another question I'm struggling with. How do I solve to find the missing angle?
snow_lady [41]

Answer:

23465459544 + 44492711 = 597595855122256.56114163174112113 \leqslant  \leqslant  \geqslant yhy \times \frac{?}{?}kwwkjuujsjkoodji \beta \pi \beta  \cos(2216 {59 \times  \tim3.5es  -  = 6 \\  \\ 53 \times }^{2} )

5 0
3 years ago
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