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3 years ago

Find the area: Please help!

Mathematics

2 answers:

andrezito [222]3 years ago

7 0

Answer:

40 yd^2

Step-by-step explanation:

Area for a triangle is A = base * height / 2 = 8*10/2 = 40 yd^2

If it is helpful, plz give me Brainliest.

Natalija [7]3 years ago

4 0

Answer:

40 yd^2

Step-by-step explanation:

The formula is (B*H)/2

The base is 8 and the height is 10

8*10=80

80/2

= 40

Don't forget to put the units:

40 sq. yards

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Evaluate<br> Evaluate şv – 3 + 5 x when y = 6 and 2 = 3.<br> Y-<br> 3 + 5z when y = 6 and z = 3.

Karolina [17]

Step-by-step explanation:

I cannot understand the question of first part so second part

Y - 3 + 5z

Putting values of y and z

6 - 3 + 5(3)

3 + 15

8 0

4 years ago

The greatest common factor (GCF) of x^3, x^7, x^9 is ?<br> Please help

solong [7]

Answer:

$x^3$

Step-by-step explanation:

Let the greatest common factor of $a,b,c$ such that $a,b,c \in\mathbb{Z}$ and they are not all equal to zero, $d$ is the common divisor of $a$ and $b$ . Therefore, $d \mid a$ and $d \mid b$

You can write

$D(a) = \{d \in\mathbb{Z} : d \mid a\}$

$D(b) = \{d \in\mathbb{Z} : d \mid b\}$

The greatest common factor of $a,b$ is given as

$D(a,b) = \{d \in\mathbb{Z} : d \mid a \text{ and } d \mid b\}$

and

$D(a, b) = D(a) \cap D(b)$

This happens because $D(a,b)$ is upper bounded because if $a\neq 0$ then $d \leq |a|$

for all $d\in D(a, b)$ . Therefore, the set $D(a, b)$ has the greatest elements.

Taking $x^3, x^7, x^9$ such that $x>0$

You can note that $x^7 = x^3 \cdot x^4$ and $x^9 = x^3 \cdot x^6 = x^3 \cdot x^3 \cdot x^3$

Therefore, the greatest common factor is $x^3$

Note: $x^3 \cap x^7 \cap x^9 = x^3$

6 0

3 years ago

If OB= 17 and AB = 30, then OR =

Novay_Z [31]

The correct answer is 8
Because
In triangle ORB
OR=(OB^2-RB^2)^1/2
OR=(17^2-15^2)^1/2
OR=(289-225)^1/2
OR=(64)^1/2
OR=8
RB=AB/2 so I kept its value 15 and ^1/2 refers to square root

6 0

4 years ago

Read 2 more answers

Simplify 5a – (2a + 6)

Temka [501]

Answer:

Step-by-step explanation:

Add '-2a' to each side of the equation.

5a + -2a = -6 + 2a + -2a

Combine like terms: 5a + -2a = 3a

3a = -6 + 2a + -2a

Combine like terms: 2a + -2a = 0