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Otrada [13]
3 years ago
7

Solve x2 – 3x = –8 using the quadratic formula.

Mathematics
1 answer:
I am Lyosha [343]3 years ago
7 0

Here is the step by step answer. hope it helps!

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I need help on this homework. I dont get it.
Kitty [74]

Answer:

I and III only

Step-by-step explanation:

In the equation, the set number must be the price for shoes, as it does not increase whatsoever; only the amount of games played increases the price. The fixed price is 4.25, making II false. Since the price must increase with the number of games played, 5.75b must be the amount of money per game. 5.75 is the price of one game and b is the amount of games bowled. Therefore, only I and III are correct

5 0
4 years ago
The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122 and standard deviation of 22
marin [14]

Answer: 4.27% of adults in the USA have stage 2 high blood pressure.

Step-by-step explanation:

Let x be a random variable that denotes a person with high blood pressure .

Given: Average blood pressure: \mu=122

Standard deviation: \sigma=22

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

The probability that an adult in the USA have stage 2 high blood pressure:

P(x\geq160)=P(\dfrac{x-\mu}{\sigma}}\geq\dfrac{160-122}{22})\\\\=P(z\geq1.72)\ \ \ [z=\dfrac{x-\mu}{\sigma}]\\\\=1-P(z

Hence, 4.27% of adults in the USA have stage 2 high blood pressure.

6 0
3 years ago
If <br> DF<br> and <br> GI<br> are parallel lines and mIHE = 65°, what is mDEH?
12345 [234]

Answer:

literally i have no clue sorry

Step-by-step explanation:

3 0
3 years ago
The mean of six test scores is 83.what is the sum of the six test scores?
Fittoniya [83]
Mean = total score : frequency
mean x frequency = total score

so
83 = total score : 6
83 × 6 = total score
498 = total score

so the sum of the 6 test scores is 498
6 0
3 years ago
Paco needs at least 3/8 yard of wine to build a model ship. How much wine could he buy?
AleksAgata [21]
I need more information to answer this question, so nobody can answer...
4 0
3 years ago
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