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3 years ago

Calculate the area of the figure in square centimeters.

Mathematics

1 answer:

12345 [234]3 years ago

6 0

Answer:

It would be length x width so I'mma say it's 40cm

Step-by-step explanation:

length 7cm+2cm+1cm=10cm

width 2cm+2cm=4cm

length × width

10×4=40

40cm

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Which equation represents a linear function with a slope of 12 and a y-intercept of -15? A. Y=−15x+12 B. Y=−x2+15 C. Y=x2−15 D.

Naddik [55]

Answer:

y = 12x-15

Step-by-step explanation:

The equation of a line is given by :

$y=mx+c$

Where

m is slope and c is y-intecept.

Here, the slope is 12 and y-intercept is -15.

Then the equation is :

y = 12x+(-15)

y = 12x-15

Hence, the required equation for the line is "y=12x-15".

4 0

3 years ago

How do you rewrite 6/9 in two different ways

Naya [18.7K]

We have to represent the fraction $\frac{6}{9}$ in two different ways.

Let us multiply the numerator and denominator of the given fraction by '2'.

Therefore, $\frac{6}{9} = \frac{6 \times 2}{9 \times 2} = \frac{12}{18}$

Therefore, $\frac{12}{18}$ is the first way to represent the given fraction.

Now, Let us multiply the numerator and denominator of the given fraction by '3'.

Therefore, $\frac{6}{9} = \frac{6 \times 3}{9 \times 3} = \frac{18}{27}$

Therefore, $\frac{18}{27}$ is the second way to represent the given fraction.

Therefore, $\frac{12}{18}$ and $\frac{18}{27}$ are the different ways to represent the fraction $\frac{6}{9}$ .

4 0

3 years ago

I don't really know how to do this and I already looked it up and I'm still confused.

Irina-Kira [14]

Question 4 the answer is 30 degrees.
Question 5 the answer is 132 degrees because angles on a straight line equal to 180 so 180-48.
Question 6: 90+25=115, 180-115=65
Question 7: 180-149= 31

8 0

3 years ago

Which of the following formulas will find the surface area of a cylinder with one open end and one closed end?

TiliK225 [7]

We are asked to determine the formula that can be used in solving the surface area of a cylinder given that one end is open while the other end is closed. The answer to this problem is Surface area = 2*pi*r*h or SA = 2pi*rh where "pi" is equivalent to 3.1416, the "r" represents the radius of the cylinder while the "h" represents the height of the cylinder.

3 0

3 years ago

A wheelchair ramp is 4.2 meters long. it rises up 7.0 meters. what is the angle of elevation to the nearest tenth of a degree?

Nastasia [14]

<h3>Answer: 36.9 degrees</h3>

=======================================

Work Shown:

I'm assuming your teacher meant to say the ramp is 7 meters long and the ramp rises up 4.2 meters. It doesn't make sense the way they phrased it initially since the ramp must be the longest part (it is the hypotenuse of the right triangle).

See diagram below.

The angle of elevation is the angle made between the ramp and the ground. It's the angle amount the ramp tilts upward.

sin(angle) = opposite/hypotenuse

sin(theta) = 4.2/7

sin(theta) = 0.6

theta = arcsin(0.6)

theta = 36.869897645844

theta = 36.9

Note: inverse sine or $\sin^{-1}$ is the same as arcsine. Make sure your calculator is in degree mode.

6 0

4 years ago