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Flura [38]
2 years ago
5

HELP PLZZZ THERE IS NO ANSWER CHOICES MARKING BRAINLIEST

Mathematics
2 answers:
jek_recluse [69]2 years ago
4 0

Answer:

B = 10.5

Step-by-step explanation:

From the figures, it looks like triangle HER is similar to triangle KPS.

From that we get

\dfrac{HE}{KP} = \dfrac{ER}{SP}

\dfrac{B}{7} = \dfrac{7.5}{5}

Multiply both sides by 7.

B = 10.5

vitfil [10]2 years ago
3 0

Answer:

B = 10.5

C = 10

Step-by-step explanation:

When one divides the corresponding sides of similar triangles, one will attain the ratio of similitude. If one multiplies one of the similar triangle's sides by the ratio of similitude, then one will attain the corresponding side of the similar triangle. In simple terms, the ratio of similitude is the scaling factor between two similar polygons.

As per the given information, the two triangles are similar, therefore one can set up a proportion with their corresponding sides;

\frac{ER}{PS} = \frac{HE}{KP} = \frac{HR}{KS}

Substitute;

\frac{7.5}{5} = \frac{B}{7} = \frac{15}{C}

Solve for B with cross products;

(7.5)(7) = (5)(B)\\52.5 = 5B\\10.5=B

Solve with cross products for C;

(7.5)(C) = (15)(5)\\7.5C = 75\\C=10

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Answer:

0.34134

Step-by-step explanation:

In other to solve for this question, we would be using the z score formula

z = (x - μ) / σ

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μ = mean

σ = Standard deviation

We are told in the question to find the probability that a worker selected at random makes between $350 and $400

let x1 = 350 and x2= 400 with the mean μ = 400 and standard deviation σ = $50.

z1 = (x1 - μ) / σ = (350-400) / 50 = -1

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