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3 years ago

True or false

Mathematics

1 answer:

miskamm [114]3 years ago

5 0

Answer:

1 is true

2 is true

3 is true

4 is false

5 is true

6 is true

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A dilation produces a smaller figure. Which is a possible scale factor? –2 One-third 1 4

Ghella [55]

Answer:

1/3 (one-third)

Step-by-step explanation:

A scale factor that produces an image smaller than the original figure is less than 1. A scale factor that produces an image bigger than the original figure is more than 1.

Thus, the only option that's less than 1 is one-third.

4 0

2 years ago

10+∣9+4x∣= 11 ablute value

valentinak56 [21]

Answer:

the answer is $x=-\frac{5}{2}\quad \mathrm{or}\quad \:x=-2$

Step-by-step explanation:

Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.

8 0

3 years ago

If cos theta =-2/3, which of the following are possible

Dima020 [189]

Well, the cos(∅) is negative in the second and third quadrants. If you are solving for theta, you would use the inverse of the cos or arccos
$cos(x) = ( \frac{-2}{3} )$ take the inverse of both sides to get:
x = arccos(-2/3) now evaluate the right
x = 131.8103149 degrees
to find your second solution, subtract your reference angle from 360 degrees.
360 - 131.8103149 = 228.1896851 degrees

Now the period of cos is 2π or 360 degrees. So if you want to consider all possible solutions, you would need to add/subtract 360n to both solutions above..

Not sure if this is what you're looking for, but thought I would leave it here for you just in case... As a side note, you could do this problem in radian measurement as well.

6 0

3 years ago

The area of the parallelogram is 45 square miles. Find its base and height

larisa86 [58]

A parallelogram is a 4-sided shape formed by two pairs of parallel lines. Opposite sides are parellel separately, so each pair of opposite sides have equal lengths and angles. To find the area of a parallelogram, multiply its base by height. The formula is: A(rea) = B(ase) * H(eight) * means multiply. In the question, the area of the parallelogram is known as 45 square miles, which means: 45 = B * H So we need to find out all the possible pair of factors, whose product is 45: 1 * 45 = 45 3 * 15 = 45 5 * 9 = 45 Then we know base and height will fall into each pair: 1 * 45 = 45 => B = 1 miles, H = 45 miles or B = 45 miles, H = 1 miles 3 * 15 = 45 => B = 3 miles, H = 15 miles or B = 15 miles, H = 3 miles 5 * 9 = 45 => B = 5 miles, H = 9 miles or B = 9 miles, H = 5 miles

3 0

3 years ago

The solution to 2x2 – 11 = 87 is

frozen [14]

$\text{Solve the equation:}\\\\2x^2-11=87\\\\\text{Add 11 to both sides}\\\\2x^2=98\\\\\text{Divide both sides by 2}\\\\x^2=49\\\\\text{Square root:}\\\\x=\pm\sqrt49\\\\\text{This means that the answer could be 7 or -7}\\\\\boxed{\text{x=7 or x= -7}}$

6 0

4 years ago

Read 2 more answers