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3 years ago

1.How many solutions are there in the following system of equations?

Mathematics

1 answer:

Novay_Z [31]3 years ago

8 0

By adding x = -7 so (4*-7-8y=0) y=(-7/(8*4))=3.5

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Select the correct answer.

Katena32 [7]

Answer:

I think No B

if wrong correct me pls

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3 years ago

F(x)=300(1.16)power x can someone help me out

Vedmedyk [2.9K]

Step-by-step explanation:

I am not too sure what the question asking for

but to evaluate f(x) = 300(1.16) power x = 7.500^20

8 0

3 years ago

If the nucleus of an atom contains 12 protons, how many electrons are there in a neutral atom?

Cloud [144]

Answer:

An atom of sodium has 11 proton, 11 electrons, and 12 neutrons.

3 0

4 years ago

Read 2 more answers

Solve for x using the given diagram

blagie [28]

Answer:

Step-by-step explanation:

Look a t the picture.

The triangles on the picture are similar.

Therefore the sides are in proportion:

$\dfrac{8x}{10}=\dfrac{4}{5x}$ <em>cross multiply</em>

$(8x)(5x)=(4)(10)$

$40x^2=40$ <em>divide both sides by 40</em>

$x^2=1\to x=\sqrt1\\\\x=1$

7 0

3 years ago

Assume that the weight of two year old babies have distribution that is approximately normal with a mean of 29 pounds and a stan

Lana71 [14]

Answer:

25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 29 pounds

Standard Deviation, σ = 3 pounds

We are given that the distribution of weight of two year old babies is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.10

P(X < x)

$P( X < x) = P( z < \displaystyle\frac{x - 29}{3})=0.10$

Calculation the value from standard normal z table, we have,

$P(z < -1.282) = 0.10$

$\displaystyle\dfrac{x - 29}{3} = -1.282\\x = 25.154 \approx 25.15$

Thus, 25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

5 0

4 years ago