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3 years ago

What is the percent decrease from 95 to 19?

Mathematics

2 answers:

serious [3.7K]3 years ago

7 0

Answer:

-80 percent

Step-by-step explanation:

zzz [600]3 years ago

6 0

Answer:

80%

Step-by-step explanation:

19/95=0.20

100%-20%=80%

80%*95=76

95-76=19

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Solve for x in the equation x2-12x+36=90

vazorg [7]

$x*2-12x+36=90

-10x+36=90

-10x+36-36=90-36

-10x=54

$
-10x/-10=54/-10
x=27/5
Hope this helps:)

4 0

3 years ago

The SAT mathematics scores in the state of Florida are approximately normally distributed with a mean of 500 and a standard devi

s2008m [1.1K]

I this the answer you are looking for would probably be 47.7%. hope this helps!!

6 0

3 years ago

Read 2 more answers

Circle A is inscribed in a quadrilateral. What is the perimeter of the quadrilateral?

faust18 [17]

AB + CD = BC + DA
<span>Where A, B, C, and D are points on the quad, and AB is the length of the line A to B, etc. </span>

<span>Since you know three sides, you can easily solve for the fourth. </span>

6 0

3 years ago

A random sample of 64 bags of white cheddar popcorn weighed, on average, 5.23 ounces with a standard deviation of 0.24 ounce.

emmasim [6.3K]

Answer:

We conclude that cheddar popcorn weighed less than 5.5 ounces.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =5.5 ounces

Sample mean, $\bar{x}$ = 5.23 ounces

Sample size, n = 64

Alpha, α = 0.05

Sample standard deviation, σ = 0.24 ounce.

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 5.5\text{ ounces}\\H_A: \mu < 5.5\text{ ounces}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{5.23 - 5.5}{\frac{0.24}{\sqrt{64}} } = -9$

Now, $z_{critical} \text{ at 0.05 level of significance } =-1.645$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that cheddar popcorn weighed less than 5.5 ounces.

3 0

3 years ago

A 12 ft ladder is leaning against a wall with an angle of elevation of 31.2 degrees. How high up the wall will the ladder reach?

Tom [10]

Answer:

12/sin90'=b/sin67'

12sin67'=bsin90'

b=12sin67/sin90'

Step-by-step explanation:

sister ,we can use the law of sines. since we have the angle of elevation and assume the wall makes a right angle with the ground, our angle opposite the ground is 180-[90+23=67

hope this is helpful for you

8 0

2 years ago