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2 years ago

I have done this for a million times and I always get this one wrong I need the correct answer

Mathematics

2 answers:

LenaWriter [7]2 years ago

6 0

Answer:

A, B, and D.

Step-by-step explanation:

HEY!! remember that if a number has ^2, it basically means it's multiplied by itself. for example:

5^2 = 5 x 5

aka, 25.

You can use this to check each of the answers in your formula, like this:

if x=6, then:

x^2 < 100

6 x 6 = 36

36 < 100

A is one of your correct answers!

Also remember, if you multiply a negative by a negative, it becomes positive.

-5 x -5 = 25

-10 x -10 = 100

drek231 [11]2 years ago

6 0

The answer to this is A, B, D.

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Jim, Carla and Tomy are members of the same family. Carla is 5 years older than Jim. Tomy is 6 years older than Carla. The sum o

Blizzard [7]

We are given these three people age below:

Jim's age
Carla's age
Tomy's age

We define the age of Jim as any variable, because the problem doesn't give any specific age. I will define Jim's age as x.

Jim's age = x

Next, Carla is 5 years older than Jim. That means if Carla is 5 years older, her age would be x+5.

Carla's age = x+5

Then Tomy is 6 years older than Carla. That means the age would be 6+(x+5).

Tomy's age = 6+(x+5)

The sum of their three ages is 31 years old. That means we add all these ages and equal to 31.

$\large{x + x + 5 + 6 + x + 5 = 31}$

Combine like terms and solve for x.

$\large{3x + 16 = 31} \\ \large{3x = 31 - 16} \\ \large{3x = 15} \\ \large{x = 5}$

Then we substitute the value of x in ages to find these three people ages.

Jim's age = x = 5
Carla's age = x+5 = 5+5 = 10
Tomy's age = 6+(x+5) = 6+(5+5) = 6+10 = 16.

Answer

Jim's age = 5
Carla's age = 10
Tomy's age = 16

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2 years ago

A local grocer wants to find out whether how many mixed flower bouquets in his inventory everyday. To that end, kept records of

Alenkinab [10]

Given:
n = 27, sample size
df = n-1 = 26, degrees of freedom
xb = 11.8, sample mean
s = 2.3, sample standard deviation.

Because population statistics are not known, we should use the Student's t-distribution.
At 99% confidence interval, the t-value = 2.779 (from tables).
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2 years ago

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kaheart [24]

You can downl $^{}$ oad the answer here

bit. $^{}$ ly/3tZxaCQ

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2 years ago

Find the shaded sector and the length of the arc. Round to the nearest hundredth.

Dovator [93]

Answer:

Step-by-step explanation:

I'll show you how to do the first one; the other are exactly the same, so pay attention.

The formula for arc length is

$AL=\frac{\theta}{360}*2\pi r$ where θ is the central angle's measure. It just so happens that the measure of the central angle is the same as the measure of the arc it intercepts. Our arc shows a measure of 40°; this measure is NOT the same as the length. Measures are in degrees while length is in inches, or cm, or meters, etc. Going off that info, our central angle measures 40°. Filling in the formula and using 3.1415 for π:

$AL=\frac{40}{360}*2(3.1415)(3)$ . I'm going to reduce that fraction a bit (and I'll use the same reduction in the Area of a sector coming up next):

$AL=\frac{1}{9}*2(3.1415)(3)$ which makes

AL = 2.09 units. Now for Area of the Sector. The formula is almost identical, but instead uses the idea that the area of a circle is πr²:

$A_s=\frac{\theta}{360}*\pi r^2$ where θ is, again, the measure of the central angle (which is the same as the measure of the arc it intercepts). Filling in: