2 years ago

Hello! It would help a lot if I had assistance with this question:

Mathematics

1 answer:

lyudmila [28]2 years ago

4 0

Answer:

what grade r u in? and what unit is thar

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A test is normally distributed with a mean of 70 and a standard deviation of 10. Todd

Damm [24]

Answer:

negative

Step-by-step explanation:

calculating the z score by subtracting the mean and dividing by the standard deviation

(55-70)/10= -1.5

It's negative

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3 years ago

Maya is the manager for the track team. She created a table to compare finish times from the second practice to the first

Oksi-84 [34.3K]

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Runners that decrease times are not improving

Step-by-step explanation:

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3 years ago

Verify the trigonometric identity. convert the left side of the relationship to look like the right side.

Tomtit [17]

Answer:

Verified

Step-by-step explanation:

Use $\tan{x}=\frac{\sin{x}}{\cos{x}}$ , $\sin^2{x}+\cos^2{x}=1$ and $\sec{x}=\frac{1}{\cos{x}}$

LHS= $\tan^2{x}+1=\frac{\sin^2{x}}{\cos^2{x}} + 1=\frac{\sin^2{x}+\cos^2{x}}{\cos^2{x}}=\frac{1}{\cos^2{x}}=\sec^2{x}$ =RHS

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2 years ago

What is the range of the function f(x)=(x-4)^2-5

uranmaximum [27]

f(x) = (x - 4)^2 - 5

Vertex (4 , -5)

This function opens upward and has min. value = -5

So range y >= - 5

So answer is A. -5 <= f(x) < ∞

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2 years ago

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The price of milk increased by 8 percent.If the original price is R10,84,what is the new price? step by step explanation

antiseptic1488 [7]

Answer:

If the price of a product decreases from $10 to $8, leading to an increase in quantity demanded from 40 to 60 units.

Step-by-step explanation:

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