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3 years ago

HELP someone please!!!! i dont understand

Mathematics

1 answer:

ad-work [718]3 years ago

4 0

Answer:

x = 65.03°

Step-by-step explanation:

To solve for x, we have to apply trigonometric ratio.

Recall: SOH CAH TOA

From the diagram, we know the following:

Reference angle = x

Hypotenuse = 45

Adjacent = 19

Since we know the Hyp and Adj, we would apply CAH, which is:

Cos x = Adj/Hyp

Plug in the values

$cos(x) = \frac{19}{45}$

$x = cos^{-}(\frac{19}{45})$

x = 65.0250346°

x = 65.03° (nearest hundredth)

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What is the measure of x to the nearest degree?<br> 8

faust18 [17]

We know that :

$\sf{\bigstar \ \ Cos\theta = \dfrac{Adjacent \ Side}{Hypotenuse}}$

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3 years ago

Evaluate the series

dalvyx [7]

Answer:

the value of the series;

$\sum_{k=1}^{6}(25-k^2) = 59$

C) 59

Step-by-step explanation:

Recall that;

$\sum_{1}^{n}a_n = a_1+a_2+...+a_n\\$

Therefore, we can evaluate the series;

$\sum_{k=1}^{6}(25-k^2)$

by summing the values of the series within that interval.

the values of the series are evaluated by substituting the corresponding values of k into the equation.

$\sum_{k=1}^{6}(25-k^2) =(25-1^2)+(25-2^2)+(25-3^2)+(25-4^2)+(25-5^2)+(25-6^2)\\\sum_{k=1}^{6}(25-k^2) =(25-1)+(25-4)+(25-9)+(25-16)+(25-25)+(25-36)\\\sum_{k=1}^{6}(25-k^2) =24+21+16+9+0+(-11)\\\sum_{k=1}^{6}(25-k^2) = 59\\$

So, the value of the series;

$\sum_{k=1}^{6}(25-k^2) = 59$

6 0

3 years ago

Please help me ASAP!!!<br> WILL MARK BRAINLIEEST TO WHOEVER IS RIGHT

konstantin123 [22]

Answer:

The answer is 5 x 2 x 3 x 2 x 2

Step-by-step explanation:

It is just everything at the bottom multiplied together

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3 years ago

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From the beginning of the day the temperature rose 15° so that by 4 pm it was 87°. What was the temperature at the start of the

zubka84 [21]

Your answer is A, 72°.

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4 years ago

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Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Juli2301 [7.4K]

Alright, so a food truck owner samples 100 people on two separate days. There are our totals in the graph. The question is asking for how many burgers will the food truck sell, so try to focus only on the burgers, not the other food items.
On day 1, 33 people liked burgers.
On day 2, 42 people liked burgers.
33/100, and 42/100.
75 people out of 200 like burgers.
In the second part, its saying we should use 900, in place of the 200. So, what we do is divide 900 by 200, to see what we should multiply 75 by. Remember: Whatever you do to the top, you have to do to the bottom.
We get 4.5. So, 75*4.5=337.5

It's asking for a whole number, so we'd use 338. We round up because it is a .5, not a .4.

So, based on the samples, about how many burgers will the food truck sell?
338.

3 0

3 years ago