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3 years ago

HELP ITS URGENT PLS I GIVE POINTS

Mathematics

2 answers:

leonid [27]3 years ago

8 0

Answer:

each base angle is 70°

Step-by-step explanation:

this is an isosceles triangle because two sides are equal which means two angles are equal

the left, right base angle is also 'x'

so, x + x + 40 = 180

2x = 140

x = 70

storchak [24]3 years ago

3 0

The answer is x = 60 degrees

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Below is the table of values of a function. Write the output when the input is n.

trasher [3.6K]

Answer:

when input = n, Output = 4n

Step-by-step explanation:

Output = k(input)

Where,

k = constant

Find k When output = 8 and input = 2

Output = k(input)

8 = k(2)

8 = 2k

k = 8/2

k = 4

Find k When output = 28 and input = 7

Output = k(input)

28 = k(7)

28 = 7k

k =28/7

k = 4

Find output when input = n

Output = k(input)

= 4(n)

= 4n

Output = 4n

when input = n, Output = 4n

8 0

3 years ago

if a rectangle have length of 10 inches and width of 8 inches what is the new area if each corner is cut by x^2

Natali5045456 [20]

Answer:

$80 - 4x^2$

Step-by-step explanation:

<u>Area of a rectangle</u>

A rectangle of width W and length L has an area of:

A = W.L

The given rectangle has a length of L=10 inches and a width of W=8 inches, thus its area is:

A = 8*10 = 80

$A = 80\ in^2$

If each corner is cut by a square of x*x, then the total area will be:

$A' = 80 - 4x^2$

The new area is $\mathbf{80 - 4x^2}$ square inches

5 0

3 years ago

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a rando

Lisa [10]

Answer:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

Step-by-step explanation:

$m=\frac{S_{xy}}{S_{xx}}$

Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.

Where:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=1593-\frac{77^2}{6}=604.833$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=10040-\frac{77*587}{6}=2506.833$

And the slope would be:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

5 0

3 years ago

Mr. Walsh signed up for the payment plan when purchasing a new refrigerator. He will pay an extra $411 in interest over a period

Doss [256]

Answer:

Step-by-step explanation:

3 0

3 years ago

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Aliun [14]

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5 0

3 years ago

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