Answer:
f(- 5) = 7
Step-by-step explanation:
f(- 5) means what is the value of y when x = - 5
locate x = - 5 on the x- axis, go vertically up to meet the graph at (- 5, 7 ), then
f(- 5) = 7
if 15% of adults in a certain country work from home, what is the probability that fewer than 60 out of a random sample of 500 adults will work from home?
The probability that fewer than 60 adults will work from home will be 2%.
we have to use the Normal probability distribution to find the probability
In a normal distribution with mean μ, SD σ, z-score Z of a measure X is given by
Z = (X-μ)/ σ
here,
15% adults work from home , So p= 0.15
n = 500
∴ μ = np = 500(0.15) = 75
σ = [tex]\sqrt{np(1-p)}[/tex]
σ = 7.98
Now we have selected adults(60) less than n (500)
So using the continuity correction , the probability is P(X< 60 - 0.5)
= P( X< 59.5)
which is the p-value of Z when X = 59.5
∴ Z = (X-μ)/ σ
Z = (59.5 - 75)/7.98
Z = - 1.98
so the p-value is 0.02
0.02 = 2% probability that fewer than 60 adults will work from home.
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the monthly cost (in dollars) of water use is a linear function of the amount of water used (in hundreds of cubic feet, hcf). the cost for using 17 hcf of water is 36.43, and the cost for using 28 hcf is 54.58 . what is the cost for using 24 hcf of water?
The cost for using 24 HCF water is 47.98(in dollars) by using a linear function.
What is meant by linear function?The term linear function in mathematics refers to two distinct but related concepts.
A linear function in calculus and related fields is a function whose graph is a straight line, that is, a polynomial function of degree zero or one. The term affine function is frequently used to distinguish such a linear function from the other concept.
A linear function is a linear map in linear algebra, mathematical analysis, and functional analysis.
The monthly cost of water use is a linear function: y=mx +b, where x represents HCF and y represents the cost of using. For example, if the cost of using x=17 HCF of water is $y=36.43, this means
that is a point (17,36.43)
the cost for using x=28 HCF is $y=54.58, means
that is a point (28, 54.58)
By using the above points we find slope m,
m=((54.58-36.43)/28-17)
m=1.65
=>y=1.65x+b
Now, we have to find the b point by using above point,
36.43=1.65*17+b
36.43=28.05+b
34.63-28.05=b
b=8.38
y=1.65x+8.38
When x=24,
y=1.65(24)+8.38
y=47.98
The cost for using 24 HCF of water is 47.98
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please answer this "3y=2x
Answer:
y=2/3x
Or
X=3/2y
Step-by-step explanation:
3y=2x
/3. /3
y=2/3x
3y=2x
/2. /2
3/2y=x
Hopes this helps please mark brainliest
Answer:
x=3/2y
y=2/3x
Step-by-step explanation:
for x - first screen shot
for y - second screen shot
Hope that helps!
It is 5:15 now. What time was it 9 hours and 15 minutes ago?
Answer:
8:00
Step-by-step explanation:
Calculate time
It is 5:15 now.
Subtract 15 minutes
5:00
Subtract 9 hours
subtract 5 hours
12:00
Then subtract 4 hours
8:00
Which triangle congruence postulate or theorem proves that these triangles are
congruent?
The angle-side-angle (ASA) Congruence theorem proves that
ΔABC and ΔPQR are congruent triangles.
We know that the angle-side-angle ASA Congruence theorem states that if two angles and the side between these angles of one triangle are equal to two angles and the side between then of another triangle then those two triangles are congruent.
In given triangles ABC and PQR,
∠ABC ≅ ∠PQR
BC ≅ QR
∠BCA ≅ ∠QRA
so, by ASA Congruence theorem ΔABC ≅ ΔPQR
Therefore, the angle-side-angle (ASA) Congruence theorem proves that
ΔABC and ΔPQR are congruent triangles.
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0.00147 In standard form
Answer:
It can be written as 1.47x10-³.Answer:
This is in Standard form. Did you mean scientific form?
1.47 x [tex]10^{-4}[/tex]
Step-by-step explanation:
You move the decimal so that the number is between 1 and 10. Then since in standard form the number is much less than 1.47, you determine how muhc less my how many places you need to move the decimal to put it back in standard form. Since you would need to move the decimal 4 places to the left, the exponent would be -4
Oliva is making granola bars. She will use 17.9 ounces of pastachios, 12.6 ounces of almonds,12.5 ounces of walnuts, and 12.5 ounces of cashews. This amount makes 25 bars. How many ounces of nuts are in each granola bar?
The required number of ounces of nuts would be 1/2 in each granola bar.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
She will use 12.5 ounces of walnuts to make 25 granola bars which is given in the question.
To determine the number of ounces of nuts in each granola bar
Let the number of ounces of nuts in each granola bar would be x
As per the given situation, we can write a ratio as
12.5 ounces : 25 bars = x ounces : 1 bars
⇒ 12.5 / 25 = x / 1
⇒ 1/2 = x
⇒ x = 1/2
Thus, the required number of ounces of nuts would be 1/2 in each granola bar.
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Which of the following shows an example of two irrational numbers being multiplied to get a rational number?
Answer:
[tex]\sqrt{2}[/tex] × [tex]\sqrt{8}[/tex] And [tex]\sqrt{2}[/tex] ×[tex]\sqrt{3}[/tex]
Step-by-step explanation:
3x9 are both whole numbers and 0x[tex]\sqrt{5}[/tex] has only one irrational number
Answer:
C) √2 × √8---------------------------
Option A3 × 9 = 27No, all three numbers are rationalOption B0 × √5 = 0No, one irrational number multipliedOption C√2 × √8 = √16 = 4Yes, two irrational numbers multiplied to get a rational numberOption D√2 × √3 = √6No, √6 is still irrational numberMrs. sisneros ran 3 miles in 27 minutes on monday. she ran 5 miles in 50 minutes on wednesday. on which day did mrs. sisneros run at a faster rate? what was that rate?
Friday hope that this helps
justin went to the track at bobcat stadium and performed the 1.5-mile run test to estimate his vo2max. he completed 1.5 miles in 11 minutes and 25 seconds. what is his estimated vo2max? round your answer to the first decimal place.
3Justin's estimated Vo2 max is 25.8(mL*kg*min)
What is Vo2 max ?
The amount (volume) of oxygen used by your body while exercising as hard as you can is referred to as VO2 max. It's a common tool for determining your level of fitness. Knowing your VO2 max can assist you in training for sports, tracking fitness progress, and improving your heart health.
Here using vo2 max fomula 1.5 miles ,
=> VO2 max = 3.5+483/Time
Here Time= 11 min 25 sec = 25/60 = 0.41 min
Then time=11.42 mins. Now,
=> VO2 max = 3.5+ 483/11.41
=> VO2 max = 3.5+42.3
=>VO2 max = 25.8(mL*kg*min)
Hence His estimated Vo2 max is 25.8(mL*kg*min)
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