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3 years ago

Please answer. I’ll mark brainliest

Mathematics

1 answer:

Mashcka [7]3 years ago

4 0

Answer:

x=48 degrees

Step-by-step explanation:

since two sides are the same, the angles of those sides are the same, so you add 66 twice and subtract from 180.

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A quadrilateral ABCD has the area 10 square feet. After a dilation with a scale factor of 3, find the area of quadrilateral A'B'

gtnhenbr [62]

10 x 3^2

= 10 x 9

= 90

5 0

3 years ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

Arte-miy333 [17]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x------> the length of rectangle

y----> the width of rectangle

we know that

The area of the constructed figure is equal to

$A=xy+2x^{2} +2y^{2}\\A=120\ cm^{2}$

$120=xy+2x^{2} +2y^{2}$ -----> equation A

$x=y+5$ -----> equation B

substitute equation B in equation A

$120=y(y+5)+2(y+5)^{2} +2y^{2}\\120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\5y^{2}+25y+50-120=0\\5y^{2}+25y-70=0$

using a graphing calculator to resolve the quadratic equation

the solution is

$y=2\ cm$

Find the value of x

$x=2+5=7\ cm$

Find the perimeter of rectangle

The perimeter of rectangle is equal to

$P=2(x+y)\\P=2(7+2)=18\ cm$

3 0

4 years ago

Which statements accurately describe how to determine the y-intercept and the slope from the graph below?

Andru [333]

Answer:

Select one of the two bottom statements which both read "To find the y-intercept, begin at the origin and move vertically to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation ."

Step-by-step explanation:

The y-intercept of a function is the point where the graph intersects the y-axis. Since the y-axis is the vertical line through the origin, we can start at the origin (0,0) and move up or down to where the line crosses the axis. This (0,y) point is the y-intercept. It is always (0,y) because it is located on the y-axis where x=0.

The slope of a function of a function is the rise/run or rate of change of the function. It can be seen on the graph of a line between any two coordinate pairs of the line. We know it as the variable m in linear function equations. To find it using an equation, we chose the point-slope form y $y_{2}-y_{1} = m(x_{2}-x_{1})$ . We substitute two coordinate pairs from the line for $(x_{1},y_{1} ) and (x_{2},y_{2})$ to find the missing value m or slope of the line.

8 0

3 years ago

Read 2 more answers

What is 2 1/3 multiplied by 5 1/3 as a mixed number or fraction

snow_tiger [21]

First we must convert the mixed numbers to the improper fractions:

$2\dfrac{1}{3}=\dfrac{2\cdot3+1}{2}=\dfrac{7}{3}\\\\5\dfrac{1}{3}=\dfrac{5\cdot3+1}{3}=\dfrac{16}{3}$

$2\dfrac{1}{3}\cdot5\dfrac{1}{3}=\dfrac{7}{3}\cdot\dfrac{16}{3}=\dfrac{7\cdot16}{3\cdot3}=\dfrac{112}{9}=\dfrac{108+4}{9}=12\dfrac{4}{9}\\\\Answer:\ \boxed{2\dfrac{1}{3}\cdot5\dfrac{1}{3}=12\dfrac{4}{9}}$

6 0

3 years ago

2. Lara collects shark's teeth. She has 72 teeth. She wants to put them in special cases. Each case can hold 10 teeth. How many

kozerog [31]

Answer:

Lara should buy 8 boxes

Step-by-step explanation:

To start we would need to do

72/10

since 72 isn't a multiple of ten we can round it down to 70, then do

70/10=7

since we still have two teeth, we can put them in their own box so

7+1=8

8 0

4 years ago