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Goryan [66]
3 years ago
7

Please help 7 n = 7 n= ____

Mathematics
1 answer:
zmey [24]3 years ago
6 0
1
7 x 1 = 7

hope this helps!
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Find the value of x that makes ABCD a parallelogram.
daser333 [38]

Answer:

the answer is 6

Step-by-step explanation:

5x+150=180( cointerrior angle of traingle)

5x=30

x=6

7 0
2 years ago
1) A water park charges $5 for entry into the park and an additional $2 for each of the big waterslides. Steven spent $17 on his
777dan777 [17]
1.) The answer is A. 5+2x = 17. The x in the equation signifies the number of times Steven went to the big slides. The 5 represents the fixed cost of the slide. The total expenditure in the water park is 17 dollars, and the 2 represents the cost of using 1 big slide.

2.) The answer is still letter A. 5 +2x =17.
8 0
3 years ago
Anne and Nancy use a metal alloy that is 20% copper to make jewelry. How many ounces of a 14% and 24% alloy must be mixed to for
Gala2k [10]
<span>copper +copper = copper
0.14x+0.24(100-x) = 0.20*100 = 20</span>
7 0
3 years ago
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 280 engines
DENIUS [597]

Answer:

The value of the test statistic is t = -2.09

Step-by-step explanation:

The null hypothesis is:

H_{0} = 6.6

The alternate hypotesis is:

H_{1} \neq 6.6

Our test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation(square roof of the variance) and n is the size of the sample.

In this problem, we have that:

X = 6.5, \mu = 6.6, \sigma = \sqrt{0.64} = 0.8, n = 280

So

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{6.5 - 6.6}{\frac{0.8}{\sqrt{280}}}

t = -2.09

The value of the test statistic is t = -2.09

4 0
3 years ago
P/5 + 6 = 10<br> 1. 44<br> 2. 30<br> 3. 20<br> 4. -20<br> What one
san4es73 [151]

Answer:

20

Step-by-step explanation:

P/5 + 6 = 10

P/5 = 10 - 6

P/5 = 4

(cross multiply)

P = 5 × 4

P = 20

7 0
3 years ago
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