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3 years ago

Been stressing out on this can anyone help

Mathematics

2 answers:

HACTEHA [7]3 years ago

4 0

Answer:

43+(x-7)=90

43+(x-7)-43=90-43

(x-7)=46

x-7+7=47+7

x=54

Step-by-step explanation:

Anon25 [30]3 years ago

4 0

Answer:

x=54

Step-by-step explanation:

since the angle is 90°, simply subtract 90 by 43 to get 47. However, in order for the angle above to equal 47, add 7 to the answer to get 54.

to check the answer, plug in x.

if it works properly, 54-7 should equal 47 and 43+47 should be equal to 90.

I hope this helps you!

You might be interested in

calculate the area of the shaded region in each figure. use 3.14 for π and round to the nearest 10th if nessary

telo118 [61]

Answer:

7.6 cm²

Step-by-step explanation:

Area of rectangle= l x w

3 x 4 = 12 cm

Area of circle= πr²

π x 2.5²= 19.625

Area of shaded= Area of circle - area of rec

19.625- 12= 7.625 cm²

≈7.6

I HOPE THIS HELPED

3 0

3 years ago

Line N passes through the points (–1, 4) and (–1, –4).Which is true of line N? Line N is a vertical line with an undefined slope

Marrrta [24]

Answer:

Line N is a vertical line with an undefined slope.

Step-by-step explanation:

When the points that line N passes through are graphed, they form a vertical line.

All vertical lines have an undefined slope.

We can also check if it's undefined by finding the slope.

$m=\frac{-4-4}{-1+1}=\frac{-8}{0}$

The quotient would be undefined. You cannot divide by zero.

Hope this helps.

7 0

3 years ago

3. Penguins can swim at speeds of up to 29 feet per second. Use dimensional analysis to

mestny [16]

Answer:

Penguins can swim at a speed of 19.77 miles per hour.

Step-by-step explanation:

Since penguins can swim at speeds of up to 29 feet per second, to convert this speed to miles per hour, knowing that 1 mile is equal to 5280 feet, the following calculation must be performed:

1 hour = 60 minutes

1 minute = 60 seconds

1 hour = 60x60 seconds = 3,600 seconds

29 x 3,600 = feet per hour = 104,400

104,400 / 5,280 = miles per hour = 19.77

Thus, penguins can swim at a speed of 19.77 miles per hour.

5 0

3 years ago

The standard deviation tells us a. the average value of the scores. b. the relative standing of a particular score. c. the skewn

andreyandreev [35.5K]

We can say that the standard deviation tells us the dispersion of the scores, making option D the correct choice.

<h3>What is the standard deviation?</h3>

A standard deviation (or σ) is a measure of how widely distributed the data is about the mean (μ). A low standard deviation suggests that data is grouped around the mean, whereas a large standard deviation shows that data is more spread out. A standard deviation around 0 suggests that data points are close to the mean, whereas a high or low standard deviation indicates that data points are above or below the mean, respectively.

We use the following formula to compute the standard deviation:

$\sigma = \sqrt\frac{{\sum_{i=1}^{N}\left | x_i - \mu \right | }^2}{N}$

In this formula, σ is the standard deviation, $x_i$ is the data point in the set we are solving for, μ is the mean, and N is the total number of data points.