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creativ13 [48]
3 years ago
11

Expand and simplify (x + 4)(x-7)

Mathematics
1 answer:
Vika [28.1K]3 years ago
6 0

Answer.

(x+4)×(x-7)

= x^2 - 7x + 4x - 28

= x^2 - 3x - 28

I hope it's helps you then please mark me as Brainlist so I can get next Rank Ace.

Please Follow me give To much thanks please.

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An oblique cylinder has a radius of 10 units and slant length of 26 units. What is the volume of the cylinder
marysya [2.9K]
The formula of the volume of an oblique cylinder is V = \pir²h where \pi is 3.14, r is the radius of the circular base of the cylinder and h is the height of the cylinder. You are given a slant length and radius of 26 and 10 units. You can get the height by using pythagorean theorem c²=a²+b².

c²=a²+b²
26² = 10² + b²
b = 24

V = \pir²h
V = \pi(10)²(24)
V = 7,540 units³
6 0
3 years ago
Read 2 more answers
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
the ration of girls to boys in a movie club was 5:4 there were 24 boys how many girls were there in the club​
mr Goodwill [35]

Answer:

30 girls 30:24

Step-by-step explanation:

You would do 24 divided by 4 and get 6. Then you would do 5 times 6 to get 30.

Hope this helps.

5 0
3 years ago
Read 2 more answers
Will drank 3⁄4 of a cup of milk at breakfast and 5⁄6 of a cup of milk at lunch. How much milk did he drink in total?
coldgirl [10]

Answer:

1  7/12   cups

Step-by-step explanation:

3/4 + 5/6

LCM of 4 and 6 is 12 so we have

9/12 + 10/12

=19 / 12

= 1  7/12 cups of milk


5 0
3 years ago
What is the equation of the following graph in vertex form?
Zepler [3.9K]
<h3>Answer: Choice B.   y = (x+3)^2 - 1</h3>

============================================

How I got that answer:

The vertex is the lowest point of parabolas that open upward.

(h,k) = vertex

(h,k) = (-3,-1)

h = -3

k = -1

For each of the answer choices, a = 1.

The general template of a quadratic in vertex form is

y = a(x-h)^2 + k

Plug a = 1, h = -3, k = -1 into that equation. Simplify.

y = a(x-h)^2 + k

y = 1(x-(-3))^2 + (-1)

y = (x+3)^2 - 1

8 0
3 years ago
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