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Margaret [11]
3 years ago
12

Can someone help me out my math grads are bad

Mathematics
2 answers:
dimaraw [331]3 years ago
7 0

Answer:

Perimeter = 9x + 12x + 15x

Perimeter = 36x (simplified)

dybincka [34]3 years ago
7 0

Answer:

Step-by-step explanation:

First answer: 9x+12x+15

Second answer: 21x+15

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V = ar2h<br> 12 cm<br> 5 cm <br><br> V ~ [?]cm<br> PLEASE HELP MEEEMEMEE
sleet_krkn [62]

Answer:

540cm³

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is the answer

3 0
3 years ago
Two ropes, AD and BD, are tied to a peg on the ground at point D. The other ends of the ropes are tied to points A and B on a fl
Lisa [10]

Answer: 5(√3-1) unit.

Step-by-step explanation:

Since, By the below diagram,

For triangle BDC,

We can write,

tan 30^{\circ}=\frac{BC}{DC}

⇒ \frac{1}{\sqrt{3}}=\frac{BC}{5\sqrt{3}}}

⇒  \sqrt{3}=\frac{5\sqrt{3}}{BC}

⇒ BC=\frac{5\sqrt{3} }{\sqrt{3} }

⇒ BC=5\text{ unit}

Now, In triangle ADC,

tan45^{\circ}=\frac{AC}{DC}

⇒ 1=\frac{AB+BC}{DC}

⇒ 1=\frac{DC}{AB+BC}

⇒ 1=\frac{5\sqrt{3}}{AB+5}

⇒ AB+5=5\sqrt{3}

⇒ AB=5\sqrt{3}-5=5(\sqrt{3}-1)\text{ unit}

8 0
3 years ago
Read 2 more answers
you decided to keep flipping a coin until tails came up. what is the probability of tails coming up on the 5th flip of the coin?
zzz [600]
1 in 2. Each flip is independent of each other, so whether it is the 1st flip or 5th or 100th, the probability of getting tails on any one flip is 50%
6 0
4 years ago
A young boy is growing at a rate of 3.5 centimeters per month. He is currently 90 cm tall. At that rate, in how many months will
Ivanshal [37]

Answer:

Young boy will grow to height 132 cm in 12 months.

Step-by-step explanation:

Given:

Growing rate = 3.5 cm per month

Current height = 90 cm

Let the number of months be x

Required height = 132 cm

We need to find the number of months required to grow the height till 132 cm.

Hence Number of months required can be calculate by subtracting Required height with Current height and then dividing it with growing rate.

Framing the above statement in equation form we get;

x=\frac{132-90}{3.5} = \frac{42}{3.5} =12 \ months

Hence Young boy will grow to height 132 cm in 12 months.

6 0
3 years ago
Simplify to create an equivalent expression (2j+1)9-7j
sveta [45]

Answer:

Simplifying

(2j + 1) * 9 + -7j = 0

Reorder the terms:

(1 + 2j) * 9 + -7j = 0

Reorder the terms for easier multiplication:

9(1 + 2j) + -7j = 0

(1 * 9 + 2j * 9) + -7j = 0

(9 + 18j) + -7j = 0

Combine like terms: 18j + -7j = 11j

9 + 11j = 0

Solving

9 + 11j = 0

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Add '-9' to each side of the equation.

9 + -9 + 11j = 0 + -9

Combine like terms: 9 + -9 = 0

0 + 11j = 0 + -9

11j = 0 + -9

Combine like terms: 0 + -9 = -9

11j = -9

Divide each side by '11'.

j = -0.8181818182

Simplifying

j = -0.8181818182

8 0
3 years ago
Read 2 more answers
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