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3 years ago

Pliz help me with this test

Mathematics

2 answers:

Rom4ik [11]3 years ago

8 0

Answer:

Step-by-step explanation:

Smoking and drinking harms the fetus by limiting it's chance of being healthy

LenaWriter [7]3 years ago

4 0

Answer:

Step-by-step explanation:

Exercise and a balnced diet wont harm a fetus, but smoking and drinking alcohol would.

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(1/4+1/4)-6÷1/3+2 how do you get it?????

victus00 [196]

2/4-6 ÷ 1/3 + 2
|
v
2/4 - 2 + 2
|
v
2/4 -0

=2/4 -> 1/2

you get it by using PEMDAS

8 0

3 years ago

Read 2 more answers

Can somebody answer this for me plz its my homework.

timofeeve [1]

Answer:

The rule for a reflection over the y -axis is (x,y)→(−x,y) .

The rule for a reflection over the x -axis is (x,y)→(x,−y) .

sorry I can't help you with number 4, hopefully this helps!

6 0

3 years ago

how many circles can be drawn passing through three non collinear points and how many circles can be drawn passing through three

MrRissso [65]

Answer:

Only one circle can be drawn through three non nonlinear points, No circle can be drawn through three nonlinear points

Step-by-step explanation:

A circle has a curve. As long as the three non nonlinear points both have the same amount of distance from the center of the circle it can be a circle drawn. No circle can be drawn through three points on the line.

7 0

3 years ago

What is the sum of the measures of the interior angles formed by the boundary of this team pennant?

Amiraneli [1.4K]

Answer:

Option 3rd is correct that is $180^{\circ}$

Step-by-step explanation:

Since, the pennant has three points it is in triangular shape since, have three points

Triangle is enclosed figure.

As we know the sum of interior angles of triangles is $180^{\circ}$

Therefore, Option 1,2,4 are discarded.

Hence, Option 3rd is correct.

6 0

3 years ago

Read 2 more answers

A country's population in 1991 was 114 million. In 1997 it was 120 million. Estimate the population in 2014 using exponential gr

Rufina [12.5K]

The answer is 138 million.

Step 1. Calculate the growth rate.
Step 2. Calculate the population number in 2014.

We will use the formula for exponential growth:
A = P * eⁿˣ
where:
A - the final amount (value)
P - the initial amount (value)
e - the mathematical constant (e ≈ 2.72)
n - the growth rate
x - the time

Step 1:
A = 120 million = 120 000 000
P = 114 million = 114 000 000
n = ?
x = 1997 - 1991 = 6
Therefore:
$120 000 000 = 114 000 000 * e ^{n*6} \\ e ^{n*6} =120 000 000 /114000000 \\ e ^{n*6} =1.05 \\$
Logarithm both sides of the equation:
$ln(e ^{n*6})=ln(1.05) \\ n*6*ln(e) = ln(1.05) \\ 6n=ln(1.05) \\ n = \frac{ln(1.05)}{6} \\ n = \frac{0.05}{6} \\ n = 0.0083$

Step 2:
Now when we know the growth rate, it is easy to estimate the population in 2014
A = ?
P = 120 000 000
n = 0.0083
t = 2014 - 1997 = 17
$A = 120 000 000 * e ^{0.0083*17} \\ 
A = 120 000 000 * e^{0.1411} \\ 
A = 120 000 000 * 1.15 \\ 
A = 138 000 000
$
Thus, the population will be 138 million in 2014

8 0

3 years ago