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Marina86 [1]
3 years ago
12

Please help!! BRAINLIEST to correct answer!!

Mathematics
1 answer:
ira [324]3 years ago
7 0

Answer:

b.  -(x - 7)(x + 10)

Step-by-step explanation:

-x² - 3x + 70

-(x - 7)(x + 10)

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First USA, a major credit card company, is planning a new offer for their current cardholders. The offer will give double airlin
raketka [301]

Answer:

The answer is "0.02235 \ and \ 0.02501".

Step-by-step explanation:

Given:

x= 1184\\\\n = 50000\\\\c = 95\% = 0.95

The sample proportion is computed by subtracting that sample size by both the successes:

\hat{p}=\frac{x}{n} =\frac{1184}{50000}= 0.02368

Determine z_{\frac{\alpha}{2}} = Z_{0.025} using table Z in Table Z for trust level 1 -\alpha = 0.95

add using appendix F ((0.025) inside the table, therefore the z-score is the found z-score with negative sign):

So, the boundaries of the confidence interval:

\to \hat{p}-z_{\frac{\alpha}{2}} \cdot  \sqrt{\frac{\hat{p} (1-\hat{p})}{n}} = 0.02368 - 1.96 \cdot \sqrt{\frac{0.02368(1-0.02368)}{50000}}\approx 0.02235 \\\\\to \hat{p}-z_{\frac{\alpha}{2}} \cdot  \sqrt{\frac{\hat{p} (1-\hat{p})}{n}} = 0.02368 + 1.96 \cdot \sqrt{\frac{0.02368(1-0.02368)}{50000}}\approx 0.02501\\\\

6 0
3 years ago
Make x the subject of the formula<br>y = mx + b​
zubka84 [21]

Step-by-step explanation:

y=mx+c

Take c from both sides:

y-c = mx

Divide both sides by m:

(y-c) / m =x

Now swap sides to make it prettier:

x = (y-c) / m

6 0
3 years ago
Read 2 more answers
If you are heading off to college discuss who will be paying for it, where you will live, what your intended major will be, and
Lilit [14]

Answer:I think it’s telling you to discuss this stuff with your family, idt this is a question I can really answer

Step-by-step explanation:

8 0
3 years ago
Maria is setting up a 20gal salt water fish tank. That needs to have a salt content of 3.5% . if she has water with 2.5% salt an
Natalka [10]
X + y = 20   ---> x = 20 - y

2.5x + 3.7y = (3.5)(20) = 70

--> 2.5(20-y) + 3.7y = 70

--> 50 -2.5y +3.7y = 70

--> 1.2y = 20

--->  y = 16.66

Answer: 16.66 gallons
3 0
3 years ago
What is the solution to the inequality 3t + 9 ≥ 15 ?
Basile [38]
3t+9≥15 => 3t ≥ 6 => t ≥2 => t= [2,∞)
Hope that helps, have a nice day!! ^^
5 0
3 years ago
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