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2 years ago

Helpppp me please!! I dont understand.

Mathematics

1 answer:

r-ruslan [8.4K]2 years ago

6 0

Answer:

A) x = 12

B) = 154

Step-by-step explanation:

RVT is a straight line so it must have an angle of 180º. If we take the 26º from ST we know that RS is equal to 154º

So we should set the equation (15x-26) = 154

We should always keep the equation balanced so to do this we're going to add 26 to both sides to get x by itself.

Your equation should now look like this. 15x = 180

Then divide both sides by 15 to get x = 12

We know that UR is also 26º because RS is 154º That makes RU congruent to ST and RS congruent to UT

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Briana spent 2 3/4 hours on her science project. Jackson worked 1 1/3 times as long on his science project as Briana worked. For

nikdorinn [45]

3 2/3 hours. Because if you do 2 3/4 times 1 1/3 you get 11/3 which simplifies into a mixed fraction of 3 2/3.

8 0

2 years ago

‼️‼️10 points‼️‼️

My name is Ann [436]

Answer:

The correct answer is B.

Step-by-step explanation:

There is no clear rule regarding the relationship with these numbers. So it is not linear.

Good Luck!

8 0

2 years ago

Read 2 more answers

Si f(x)=2x^{2}−3x+1 y g(x)=x−3. Entonces (f∘g)(−1) es:

WARRIOR [948]

Huh? this is very confusing 12

7 0

2 years ago

Please help, I need to get this done!<br>I need to get number 16, 17, and 18 done please help!!!!

Tresset [83]

Answer:

16) 62.8 m²

17) 19.4 m²

18) 103.5 m²

Step-by-step explanation:

The formula to find area of a circle is: $\pi r^{2}$ . To find radius, find the half of the diameter.

To solve number 16, first find the area of the unshaded circle using the formula: $\pi 4^{2}$ . This is also 3.14*16. Multiply to get 50.24 m². Now find the area of the larger circle using the formula: $\pi 6^{2}$ . This is also 3.14*36. Multiply to get 113.04 m². Now subtract 113.04 - 50.24 to get the shaded area or 62.8 m².

To solve number 17, first find the area of the square using the formula: side x side. In this case multiply: 5.25 x 5.25 to get 27.5625. Round to the nearest tenth to get 27.6 m². Now find the area of the circle using the formula: $\pi 2.625^{2}$ . This is also 3.14*2.625. Multiply to get 8.2425. Round to the nearest tenth to get 8.2. Subtract 27.6 - 8.2 to get 19.4 m².

To solve number 18, find the area of one unshaded circle using the formula: $\pi 1.75^{2}$ . This is also 3.14*3.0625. Multiply to get 9.61625. Round to the nearest tenth to get 9.6 m². Add 9.6 + 9.6 to find the area of both unshaded circles. You get 19.2 m². Now find the area of the shaded circle using the formula: $\pi 6.25^{2}$ . This is also 3.14*39.0625. Multiply to get 122.65625. Round to the nearest tenth: 122.7. Subtract 122.7 - 19.2 to get 103.5 m².

Hope it helps and is correct!

5 0

2 years ago

The weights of professional wrestlers are approximately normally distributed with a mean of 220 pounds and a standard deviation

nikdorinn [45]

Answer:

1.6%

Step-by-step explanation:

The cumulative distribution function (CDF) of a random variable X is denoted by F(x), and is defined as

F(x) = P(X ≤ x). where x is the largest possible value of X that is less than or equal to x

z = (x-μ)/σ,

where:

x is the raw score = 205

μ is the population mean, = 220 pounds

σ is the population standard deviation = 7 pounds

205 -220/7

z = -15/7

z = -2.1428571429

Using the normal cdf function on your graphing calculator,the cumulative distribution is

normalcdf( -2.1428571429, 100)

= 0.01606229

In percent form = 0.01606229 × 100

= 1.6%

5 0

2 years ago