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trasher [3.6K]
3 years ago
11

Heeeeeeeeeelp......​

Mathematics
1 answer:
-Dominant- [34]3 years ago
5 0

Answer:

x+7

Step-by-step explanation:

So it's been a while since I took Geometry, so I don't know what principle makes these angles equal to each other, but I know that they are in fact equal. So that means that 6x +3 = 45. Subtract 3 from each side gets you 42+6x, then divide each side by 6, which gets you your answer of x=7.

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18. A credit card company claims that the mean time the customers spend on
Aleksandr [31]

Answer: If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes is .031

Step-by-step explanation:

8 0
3 years ago
Let l be the length of a diagonal of a rectangle whose sides have lengths x and y, and assume that x and y vary with time. If x
meriva

The rate of change of the size of the diagonal is; 25.2 ft/s

By Pythagoras theorem;

The length, l of a diagonal of a rectangle whose sides have lengths x and y is;

  • l² = x² + y².

In essence; the length of the diagonal is dependent on the length, x and y of the sides.

Therefore;

(dl/dt)² = (dx/dt)² + (dy/dt)²

where;

  • (dx/dt) = 19 ft/s
  • (dy/dt) = -15 ft/s

Therefore,

(dl/dt)² = 19² + (-15)²

(dl/dt)² = 361 + 225

dl/dt = √586

dl/dt = 25.2

Therefore, the size of the diagonal is changing at a rate of; 25.2 ft/s.

Read more;

brainly.com/question/12559989

4 0
2 years ago
Se distributive<br>8 x (5 + 7)​
Sonbull [250]

8 × ( 5 + 7 ) =

= 8×5 + 8×7

= 40 + 56

= 96

5 0
3 years ago
Read 2 more answers
Help me with number 15, will give brainliest:)
gladu [14]
i believe it’s D because where you have 20 marked it’s 20 more from where you are which would be around 40 which is why i’m saying D
5 0
3 years ago
Read 2 more answers
The probability that a student at certain high school likes art is 36%. The probability that a student who likes art also likes
KIM [24]

Answer: Probability that a student chosen at random likes science given that he or she likes art is 58%

Step-by-step explanation:

Since we have given that

Probability that a student who likes art and science = 21%

Probability that a student who likes art = 36%

According to question,

we need to find the probability that a student chosen at random likes science given that he or she likes art.

So, we will use "Conditional Probability":

P(A) = 0.36

P(S ∩ A) = 0.21

P(S\mid A)=\frac{P(S\cap A)}{P(A)}\\\\P(S\mid A)=\frac{0.21}{0.36}\\\\P(S\mid A)=0.58\\\\P(S\mid A)=58\%

Hence, Probability that a student chosen at random likes science given that he or she likes art is 58%.

5 0
3 years ago
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