Answer:
5 (8 – 3) = ( 5 x 8) - (5 x 3)
Step-by-step explanation:
You distribute the 5 over the 8 and the 3 hence the distributive property.
A study of the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain. This rate seemed to be higher than the 15% quoted in a recentEnvironmetricsarticle on the average proportion of damaged trees in the Northeast. Does the sample suggest that trees in the Hopkins Forest are more susceptible than trees from the rest of the region
Answer:
Yes
Step-by-step explanation:
We can test this claim using the one proportion z test :
x = 25 ; n = 100
Phat = x / n = 25 / 100 = 0.25
H0 : P = 0.15
H0 : P > 0.15
The test statistic :
Z = (phat - p) ÷ √p(1-p)/n
Z = (0.25-0.15) ÷ √(0.15*0.85)/100
Z = 2.8
Using the Pvalue from Zscore calculator :
α = 0.05
Pvalue (Z < 2.8) =0.0026
Pvalue < α ; We reject the Null
I write down a number lager than 1 and less than 10. Find the chance that the number is a factor of 12.
Answer:
4
Step-by-step explanation:
2*6 = 12
3*4 =12
these are all the numbers that would be a factor of 12 between 2-10
Solve 5b + 11 = 56 - 4b.
Write your
response.
In a recipe, you have to add one cup
of sugar for every four cups of flour.
What is the ratio of sugar to flour?
An
A. 4:1
B.
2:4
C.
1:2
D.
1:4
Answer:
Ratio is 1:4 . 1 cup sugar and 4 cup flour.
1 : 4 is the ratio of sugar to flour.
What is ratio of sugar to flour?A ratio exists as an ordered pair of numbers a and b, written a / b where b does not similar to 0. A proportion exists in an equation in which two ratios stand set equal to each other.
The demonstrated quotient of two mathematical expressions is called ratio.
cup of sugar = one
cup of flour = four
1 : 4 is the ratio of sugar to flour
To learn more about ratio refer to:
https://brainly.com/question/866028
#SPJ2
Find the perimeter and the area of the figure. I have been trying to figure this one out for hours.
Answer:
56 meters
Step-by-step explanation:
when calculating the perimeter, you need to take into account every side of the figure.
i will start at the top and go clockwise showing you my calculations
5 + 5 + 11 + 7 + 16 + 7 + 5
= 56
6 x
1. Solve to find the value of x.
-
=
9
72
Answer:
13.5
Step-by-step explanation:
6x - 9 = 72
6x - 9 + 9 = 72 + 9
6x = 81
6x / 6 = 81 / 6
x = 13.5
Find x.
Do not round your answer.
8 cm
4 cm
X
x =
= [ ? ] cm
Answer:
x =12
Step-by-step explanation:
(whole secant) x (external part) = (tangent)^2
(4+x) * 4 = 8^2
Distribute
16+4x = 64
Subtract 16 from each side
4x = 48
Divide each side by 4
4x/4 = 48/4
x = 12
Answer: 12
Step-by-step explanation: 8*8 = 4(4+x), which is equal to 64 = 16 + 4x, subtract 16 from both sides, 48 = 4x, divide both sides by 4 to isolate x, 12 = x
What is the circumference of the circle below? Use the formula C = 2tr.
5 m
A 5 m
B 10T m
Answer: B
Step-by-step explanation:
The formula for circumference of a circle is 2 pie radius (2πr)
1. radius=5
2 so 2π(5)
3 2x5=10
4. 10π
7) y is inversely proportional to the square root of (x + 1).
When x = 8, y = 2. Find y when x= 99.
Which expressions are equivalent to -4(3d - 2) – 7?
Choose all answers that apply:
-12d - 15
12d - 15
None of the above
Answer:
None of the above
Step-by-step explanation:
-4(3d - 2) – 7
Distribute
-12d +8 -7
-12d +1
Answer:
None of the above
Step-by-step explanation:
-4(3d - 2) - 7 = (-4)*3d - 2 *(-4) - 7
= -12d + 8 - 7
= -12d + 1
please help me solve
Answer:
x=45 degree
Step-by-step explanation:
tan X=1
X=[tex]tan^{-1}[/tex]1
X=45 degree
Heidi solved the equation 3(x + 4) + 2 = 2 + 5(x – 4). Her steps are below: 3x + 12 + 2 = 2 + 5x – 20 3x + 14 = 5x – 18 14 = 2x – 18 32 = 2x 16 = x Use the drops-downs to justify how Heidi arrived at each step. Step 1: distributive property Step 2: Step 3: Step 4: Step 5:
Answer:
See explanation
Step-by-step explanation:
3(x + 4) + 2 = 2 + 5(x – 4)
Step 1: distributive property
3(x + 4) + 2 = 2 + 5(x – 4)
3x + 12 + 2 = 2 + 5x - 20
Step 2: collect like terms
3x + 12 + 2 = 2 + 5x - 20
3x + 14 = 5x - 18
Step 3: Addition property of equality
3x + 14 = 5x - 18
3x + 14 + 18 = 5x - 18 + 18
3x + 32 = 5x
Step 4: subtraction property of equality
3x + 32 - 3x = 5x - 3x
32 = 2x
Step 5: division property of equality
32 = 2x
32/2 = 2x/2
16 = x
x = 16
At what position on the number line is the red dot located
Answer:
A
Step-by-step explanation:
If you know the length of the side of the square, how can you figure out the area?
Answer:
By multiplying
If the sides were 5 then you would do 5x5 to get the area
Hope this makes sense :)
What is the area of the right triangle shown in the image.
Answer:
24 sq. in
Step-by-step explanation:
To find the area of a triangle, you multiply both sides by one another, then divide the product in half.
In this case it would go along the lines of:
6 x 8 = 48
48/2 = 24
And 24 is the desired answer.
sec 2x =
Check all that apply.
Answer:
C,D
Step-by-step explanation:
that is the answer to the question
Help please...no links...
the answer is 3/4 or c.
Step-by-step explanation:
to find tan A you would use the equation of tan which is the value opposite the angle A which is 27 over the value adjacent to the angle which is 36.
Robert has been on the road for 1 hour and 50 minutes. He has been traveling at a constant rate. So far, he has traveled one-sixth of his way to his destination. If he continues at the same rate, he will arrive at his destination at 3:30 PM. At what time did Robert start?
Answer: 6:30 AM
Step-by-step-explaination: 1:50×6=9:00. Robert will travel for 9 hours. We multiplied 1:50 times 6 because he has traveled one-sixth of the way. Now, we subtract 9 hours from 3:30.
3:30
2:30 1st
1:30 2nd
12:30 3rd
11:30 4th
10:30 5th
9:30 6th
8:30 7th
7:30 8th
6:30am is the answer because it is the ninth one from 3:30.
A bag contains 6 red marbles, 2 blue marbles and 5 green marbles. If two marbles are
drawn out of the bag, what is the probability, to the nearest 1000th, that both
marbles drawn will be red?
The total number of marbles in the box is 25, that is 9 green, 5 blue and 11 red. You wish to know t probability that the single chosen green or blue marble. There are a total of 14 green and blue marbles so the probability is 14/25 or 56%.
Find the percent change. Round to the nearest tenth of a percent when necessary. Indicate if the percent
change is an increase or decrease.
From 50 to 94.
46.8% derease
46.8% increase
88% derease
88% increase
Answer: 88% increase
ill give brainliest to who gets the answer right
Answer:
Ln(6x²/y⁴)
ln(6x²)-ln(y⁴)
ln6 + lnx² - lny⁴
ln6 + 2lnx - 4lny
ln(2x3) + 2lnx -4lny
In2 + In3 + 2lnx - 4lny.
That should be it.
Have a great day
^lets start off easy☺️^
Jack is 5 years older than Mary. In four years the sum of their age is 33 years old. What are their ages?
Answer:
mary=10 jack=15
Step-by-step explanation:
After 4 years Mary (x+4), Jack's age (x+5) + 4.
sum of the ages after 4 years :(x+4) + (x+5) +4=33
Simplifying the equation:
2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age
10 + 5 = 15 which is Jack's age.
Square units are used to measure?
1 width
2 volume
3 area
4 length
Convert 4x-2y=6 into slope intercept form
Answer:
y=2x-3
Step-by-step explanation:
first, you have to get the y by itself (isolate the y). you do this by subtracting 4x from both sides.
4x-2y=6
-2y=-4x+6
next, you have to divide both side by -2 to isolate the y further and get this into slope-intercept form:
-2y=-4x+6
y=2x-3
Is this right or wrong ?
Answer:
[tex](3x - 2)(4x + 6) = 12 {x}^{2} + 18x - 8x + - 12 \\ = 12 {x}^{2} + 10x - 12 [/tex]
can someone pls help me !
Answer:
Step-by-step explanation:
?
—— x 8 = 7
8
*please help and explain how you got the answer :)*
Answer:
7
Step-by-step explanation:
7 divided by 8 multiplied by 8 would be 7
Which statement tells how to graph the point (3, 2) on a coordinate plane?
Answer:
Step-by-step explanation:
plot 3 unit right from the origin and then 2 units up.
Can somebody plz help draw the spinner with these probabilities on the question like take a pic of how it looks like or explain how I do it? Thanks!
I will draw a rough figure, you can draw it neatly.
Probability =
Probability = No. of favourable outcomes/ Total no. of outcomes
Probability = No. of favourable outcomes/ Total no. of outcomesTotal number of outcomes = 4
So, here:
P(2) = 2/4 = 1/2
P(1) = 1/4
P(3) = 1/4
P(4) = 0
Here, the probability of getting 2 is ½.
Probability of getting 1 is ¼.
Probability of getting 3 is ¼.
Probability of getting 4 is 0.
Arithmetic and Geometric Sequences
When an object is dropped from a tall building, it falls about 16 feet in the first second, 48 feet in the second second, and 80 feet in the third second, regardless of its weight.
How many feet would an object fall in the tenth second?
Answer:
the object will fall 5060 feet in 10 second.
Step-by-step explanation:
g= 9.8m/s^2 and 9.8×3.33=32.67 feet/s^2.
initial velocity (u)= 16 feet/second
time taken(t)=10 second
final velocity(v)= ?
now,
V= u+ GT
=16+32.67×10
=342.67feet/second
again
distance covered= VT+1/2gt^2
=342.67×10+1/2×32.67×100
=3426.7+1633.33
=5060 feet