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3 years ago

Can you help me with the 2 questions please help!!!

Mathematics

1 answer:

ollegr [7]3 years ago

6 0

Answer:

$\frac{17x^{3} }{30}$
$\frac{x^{4} }{9}$

I hope this helps!

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Please help! This is Geometry I don't know what to do<br><br>

velikii [3]

Answer:

$\huge\boxed{x=6}$

Step-by-step explanation:

$\triangle ABC\ \text{and}\ \triangle ADB\ \text{are similar (AA). Therefore corresponding sides are in proportion.}\\\\\dfrac{BD}{BC}=\dfrac{AB}{AC}\\\\\text{We have}\\\\BD=x\\BC=10\\AB=7.5\\AC=12.5\\\\\text{Subtitute:}\\\\\dfrac{x}{10}=\dfrac{7.5}{12.5}\\\\\dfrac{x}{10}=\dfrac{7.5\cdot10}{12.5\cdot10}\\\\\dfrac{x}{10}=\dfrac{75:25}{125:25}\\\\\dfrac{x}{10}=\dfrac{3}{5}\qquad|\text{cross multiply}\\\\(5)(x)=(3)(10)\\\\5x=30\qquad|\text{divide both sides by 5}\\\\\dfrac{5x}{5}=\dfrac{30}{5}\\\\x=6$

7 0

3 years ago

Express in terms of "z" : 1/y- 1/z= 1/x

Ahat [919]

Multiply both sides by xyz
$xz-xy=yz
$
Collect like terms
$xz-yz=xy$
$z(x-y)=xy$
$z= \frac{xy}{x-y}$
Please mark me as branliest. Thank You!!

5 0

3 years ago

Melodie wants to plants flowers in a triangular flower garden in the front of her house her garden has a base of 12 feet and a h

LekaFEV [45]

Answer:

84ft^2

Step-by-step explanation:

Given data

Base= 12feet

Height= 14feet

The expression for the area of a triangle is

Area= 1/2bh

Area= 1/2*12*14

Area= 6*14

Area= 84 ft^2

Hence the area of the triangular garden is 84ft^2

6 0

3 years ago

Please, Please, Please brainers, help me solve this question. Thanks.

Dafna1 [17]

Answer:

440 square inches.

Explanation:

We can consider the boxes as one single shape.

So it's base area is 12×10=120 and the area of the side faces is 20×12=240 and 20×10=200.

Now, there are 2 of each, so let's add up everything and multiply by 2.

(120+240+200)×3=560 square inches.

But we have to take off the base, so:

560-120=440 square inches

3 0

4 years ago

Help me help me help me

Lady_Fox [76]

Ans12 is 1 13 is 5 3 is 6

Step-by-step explanation:

7 0

3 years ago

Can you help me with the 2 questions please help!!!​

Can you help me with the 2 questions please help!!!