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2 years ago

Help me it's algebra and dont tell me to look at the lesson :)

Mathematics

1 answer:

suter [353]2 years ago

7 0

Let b be the number of blue beads and g the number of green beads that Giovanni can use for a belt.

He's supposed to use a total of between 70 and 74 beads, so

70 ≤ b + g ≤ 74

The ratio of green beads to blue beads is g/b, and this ratio has to be between 1.4 and 1.6, so

1.4 ≤ g/b ≤ 1.6

For completeness, Giovanni must use at least one of either bead color, so it sort of goes without saying that this system must also include the conditions

b ≥ 0

g ≥ 0

(These conditions "go without saying" because they are implied by the others. g/b is a positive number, so either both b and g are positive, or they're both negative. But they must both be positive, because otherwise b + g would be negative. I would argue for including them, though.)

You might be interested in

What is the correct way to classify the triangle show below

Law Incorporation [45]

D obtuse, scalene is your answer

3 0

3 years ago

Here is a semi circle of radius x the perimeter of the shape is the shape of 25.71cm calculate the value of the radius x

NeX [460]

Answer:

5 cm

Step-by-step explanation:

Perimeter of a semicircle is :

P = πr + 2r

P = r(π + 2)

25.71 = r(3.14 + 2)

25.71 = r(5.14)

Divide both sides by 5.14

25.71 / 5.14 = r(5.14) / 5.14

5.0019455 = r

Hence, radius of semicircle = 5 cm

3 0

3 years ago

Describe the continuity of the graphed function. Select all that apply.

victus00 [196]

Using continuity concepts, it is found that the correct options are:

The function is continuous at x = -4.
The function has an infinite discontinuity at x = -1.

-----------------------------

A function f(x) is continuous at x = a if:

$\lim_{x \rightarrow a^{-}} f(x) = \lim_{x \rightarrow a^{+}} f(x) = f(a)$

-----------------------------

At x = -4, there are no changes in the definition of the function, thus, it is continuous.
At x = -1, we have that:

$\lim_{x \rightarrow -1^-} f(x) = 0$

$\lim_{x \rightarrow -1^+} f(x) = f(1) = 1$

A different definition depending on the which side of -1 the function is, thus, it is a jump discontinuity.

A similar problem is given at brainly.com/question/21447009

8 0

3 years ago

Hannah has a small square shaped garden with an area of 196 square feet. If she wants to put a fence around the garden, how many

Mazyrski [523]

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A square is a quadrilateral that has the same length on every side.

The area of the garden is 196 square feet. To find the area of a garden, you have to multiply the length times the width. Since you know that both widths are the same, you can simply just calculate the square root of 196. The square root of 196 is 14. So you know that one side is 14 feet in length.

Now you will need to find the perimeter. The perimeter of any polygon is the lengths of all sides added up. Since there are 4 sides on a square, and each side is the same length, you can just add 14, 4 times. 14+14+14+14 equals 56. So the perimeter of the garden is 56 feet.

Hannah will need 56 feet of fencing.

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━

4 0

3 years ago

PLEASE HELP PLEASE WILL GIVE BRAINLIEST !!!!! Freya is training for a track race. She starts by sprinting 200 yards. She gradual

DedPeter [7]

Answer:

A. $a_n=200+(n-1)5$

Step-by-step explanation:

Given,

The initial sprinting of Freya = 200 yards,

Also, She gradually increases her distance by 5 yards per day,

So, in second day her sprinting = 200 + 5 = 205 yards,

In third day = 205 + 5 = 210 yards,

In fourth day = 210 + 5 = 215 yards,

...................., so on,.....

Hence, the sequence that shows the given situation,

200, 205, 210, 215, .........

Which is an A.P.

That having first term, a = 200,

Common difference, d = 5,

Thus, the explicit formula for the given situation is,

$a_n=a+(n-1)d$

$\implies a_n=200+(n-1)5$

Option A is correct.

7 0

3 years ago

Read 2 more answers